/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 19:26:01,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 19:26:01,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 19:26:01,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 19:26:01,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 19:26:01,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 19:26:01,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 19:26:01,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 19:26:01,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 19:26:01,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 19:26:01,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 19:26:01,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 19:26:01,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 19:26:01,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 19:26:01,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 19:26:01,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 19:26:01,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 19:26:01,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 19:26:01,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 19:26:01,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 19:26:01,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 19:26:01,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 19:26:01,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 19:26:01,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 19:26:01,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 19:26:01,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 19:26:01,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 19:26:01,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 19:26:01,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 19:26:01,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 19:26:01,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 19:26:01,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 19:26:01,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 19:26:01,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 19:26:01,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 19:26:01,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 19:26:01,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 19:26:01,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 19:26:01,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 19:26:01,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 19:26:01,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 19:26:01,821 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 19:26:01,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 19:26:01,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 19:26:01,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 19:26:01,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 19:26:01,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 19:26:01,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 19:26:01,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 19:26:01,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 19:26:01,822 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 19:26:01,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 19:26:01,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 19:26:01,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 19:26:01,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 19:26:01,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 19:26:01,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 19:26:01,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 19:26:01,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 19:26:01,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 19:26:01,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 19:26:01,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 19:26:01,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 19:26:01,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 19:26:01,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 19:26:01,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 19:26:01,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 19:26:02,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 19:26:02,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 19:26:02,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 19:26:02,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 19:26:02,154 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 19:26:02,155 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-15 19:26:02,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aae8974b0/8c7a95292b4241f2b758a5e1feda3b89/FLAG6f2eeff3a [2020-10-15 19:26:02,663 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 19:26:02,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-15 19:26:02,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aae8974b0/8c7a95292b4241f2b758a5e1feda3b89/FLAG6f2eeff3a [2020-10-15 19:26:02,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aae8974b0/8c7a95292b4241f2b758a5e1feda3b89 [2020-10-15 19:26:02,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 19:26:02,990 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 19:26:02,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 19:26:02,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 19:26:02,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 19:26:02,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:26:02" (1/1) ... [2020-10-15 19:26:02,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76250f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:26:02, skipping insertion in model container [2020-10-15 19:26:02,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:26:02" (1/1) ... [2020-10-15 19:26:03,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 19:26:03,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 19:26:03,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 19:26:03,514 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 19:26:03,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 19:26:03,670 INFO L208 MainTranslator]: Completed translation [2020-10-15 19:26:03,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:26:03 WrapperNode [2020-10-15 19:26:03,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 19:26:03,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 19:26:03,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 19:26:03,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 19:26:03,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:26:03" (1/1) ... [2020-10-15 19:26:03,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:26:03" (1/1) ... [2020-10-15 19:26:03,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 19:26:03,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 19:26:03,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 19:26:03,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 19:26:03,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:26:03" (1/1) ... [2020-10-15 19:26:03,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:26:03" (1/1) ... [2020-10-15 19:26:03,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:26:03" (1/1) ... [2020-10-15 19:26:03,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:26:03" (1/1) ... [2020-10-15 19:26:03,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:26:03" (1/1) ... [2020-10-15 19:26:03,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:26:03" (1/1) ... [2020-10-15 19:26:03,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:26:03" (1/1) ... [2020-10-15 19:26:03,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 19:26:03,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 19:26:03,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 19:26:03,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 19:26:03,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:26:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 19:26:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-15 19:26:03,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-15 19:26:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-15 19:26:03,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-15 19:26:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 19:26:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 19:26:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 19:26:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 19:26:03,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 19:26:03,823 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 19:26:04,319 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 19:26:04,320 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-15 19:26:04,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:26:04 BoogieIcfgContainer [2020-10-15 19:26:04,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 19:26:04,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 19:26:04,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 19:26:04,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 19:26:04,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:26:02" (1/3) ... [2020-10-15 19:26:04,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bcf735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:26:04, skipping insertion in model container [2020-10-15 19:26:04,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:26:03" (2/3) ... [2020-10-15 19:26:04,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bcf735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:26:04, skipping insertion in model container [2020-10-15 19:26:04,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:26:04" (3/3) ... [2020-10-15 19:26:04,332 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-10-15 19:26:04,345 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 19:26:04,345 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 19:26:04,353 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 19:26:04,355 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 19:26:04,379 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,379 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,379 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,380 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,380 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,381 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,381 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,382 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,382 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,382 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,382 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,383 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,383 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,383 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,383 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,384 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,384 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,387 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,388 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,394 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,395 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,395 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:04,412 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 19:26:04,433 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:26:04,433 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:26:04,434 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:26:04,434 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:26:04,434 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:26:04,434 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:26:04,434 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:26:04,435 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:26:04,448 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:26:04,450 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-15 19:26:04,453 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-15 19:26:04,455 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-10-15 19:26:04,496 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-15 19:26:04,496 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 19:26:04,502 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-10-15 19:26:04,504 INFO L117 LiptonReduction]: Number of co-enabled transitions 592 [2020-10-15 19:26:05,834 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-15 19:26:06,066 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-15 19:26:06,158 INFO L132 LiptonReduction]: Checked pairs total: 576 [2020-10-15 19:26:06,159 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-15 19:26:06,166 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-15 19:26:06,177 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-15 19:26:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-15 19:26:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 19:26:06,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:06,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 19:26:06,187 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:06,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:06,193 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-10-15 19:26:06,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:06,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695298948] [2020-10-15 19:26:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:06,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695298948] [2020-10-15 19:26:06,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:06,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 19:26:06,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605704126] [2020-10-15 19:26:06,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:26:06,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:06,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:26:06,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:26:06,390 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-15 19:26:06,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:06,435 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-15 19:26:06,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:26:06,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 19:26:06,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:06,447 INFO L225 Difference]: With dead ends: 35 [2020-10-15 19:26:06,448 INFO L226 Difference]: Without dead ends: 31 [2020-10-15 19:26:06,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:26:06,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-15 19:26:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-15 19:26:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-15 19:26:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-15 19:26:06,487 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-15 19:26:06,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:06,488 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-15 19:26:06,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:26:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-15 19:26:06,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 19:26:06,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:06,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:06,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 19:26:06,490 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:06,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:06,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-10-15 19:26:06,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:06,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639497873] [2020-10-15 19:26:06,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:06,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639497873] [2020-10-15 19:26:06,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:06,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:26:06,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114934682] [2020-10-15 19:26:06,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 19:26:06,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:06,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 19:26:06,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:26:06,596 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-15 19:26:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:06,634 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-15 19:26:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 19:26:06,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-15 19:26:06,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:06,635 INFO L225 Difference]: With dead ends: 26 [2020-10-15 19:26:06,636 INFO L226 Difference]: Without dead ends: 24 [2020-10-15 19:26:06,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:26:06,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-15 19:26:06,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-15 19:26:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-15 19:26:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-15 19:26:06,641 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-15 19:26:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:06,642 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-15 19:26:06,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 19:26:06,642 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-15 19:26:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:26:06,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:06,643 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:06,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 19:26:06,643 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:06,644 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-10-15 19:26:06,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:06,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671062524] [2020-10-15 19:26:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:26:06,669 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:26:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:26:06,684 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:26:06,707 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:26:06,707 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:26:06,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 19:26:06,708 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:26:06,709 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:26:06,709 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-15 19:26:06,720 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,720 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,721 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,721 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,721 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,721 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,722 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,722 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,723 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,723 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,723 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,728 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,728 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,729 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,729 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,732 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,732 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,745 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:06,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 19:26:06,750 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:26:06,750 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:26:06,750 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:26:06,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:26:06,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:26:06,750 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:26:06,750 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:26:06,751 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:26:06,753 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:26:06,754 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-15 19:26:06,755 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-15 19:26:06,755 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-10-15 19:26:06,794 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-15 19:26:06,794 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-15 19:26:06,798 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-10-15 19:26:06,800 INFO L117 LiptonReduction]: Number of co-enabled transitions 920 [2020-10-15 19:26:08,229 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-15 19:26:08,374 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-15 19:26:08,379 INFO L132 LiptonReduction]: Checked pairs total: 1122 [2020-10-15 19:26:08,379 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-15 19:26:08,380 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-15 19:26:08,392 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-15 19:26:08,392 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-15 19:26:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 19:26:08,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:08,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 19:26:08,393 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:08,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:08,393 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-10-15 19:26:08,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:08,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048999919] [2020-10-15 19:26:08,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:08,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048999919] [2020-10-15 19:26:08,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:08,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 19:26:08,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892158935] [2020-10-15 19:26:08,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:26:08,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:08,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:26:08,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:26:08,454 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-15 19:26:08,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:08,486 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-15 19:26:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:26:08,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 19:26:08,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:08,491 INFO L225 Difference]: With dead ends: 185 [2020-10-15 19:26:08,491 INFO L226 Difference]: Without dead ends: 171 [2020-10-15 19:26:08,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:26:08,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-15 19:26:08,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-15 19:26:08,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-15 19:26:08,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-15 19:26:08,517 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-15 19:26:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:08,518 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-15 19:26:08,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:26:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-15 19:26:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 19:26:08,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:08,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:08,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 19:26:08,522 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:08,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:08,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-10-15 19:26:08,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:08,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580481674] [2020-10-15 19:26:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:08,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:08,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580481674] [2020-10-15 19:26:08,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:08,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:26:08,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438345600] [2020-10-15 19:26:08,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:26:08,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:08,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:26:08,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:26:08,629 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-15 19:26:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:08,733 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-15 19:26:08,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:08,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 19:26:08,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:08,738 INFO L225 Difference]: With dead ends: 205 [2020-10-15 19:26:08,738 INFO L226 Difference]: Without dead ends: 201 [2020-10-15 19:26:08,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:08,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-15 19:26:08,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-15 19:26:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-15 19:26:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-15 19:26:08,773 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-15 19:26:08,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:08,773 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-15 19:26:08,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:26:08,774 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-15 19:26:08,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:26:08,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:08,775 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:08,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 19:26:08,776 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:08,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:08,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-10-15 19:26:08,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:08,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478841347] [2020-10-15 19:26:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:08,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478841347] [2020-10-15 19:26:08,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:08,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:26:08,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86779801] [2020-10-15 19:26:08,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:26:08,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:08,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:26:08,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:26:08,830 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-15 19:26:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:08,901 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-15 19:26:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:08,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 19:26:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:08,904 INFO L225 Difference]: With dead ends: 189 [2020-10-15 19:26:08,904 INFO L226 Difference]: Without dead ends: 185 [2020-10-15 19:26:08,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-15 19:26:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-15 19:26:08,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-15 19:26:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-15 19:26:08,917 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-15 19:26:08,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:08,918 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-15 19:26:08,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:26:08,918 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-15 19:26:08,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:26:08,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:08,920 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:08,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 19:26:08,920 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:08,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:08,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-10-15 19:26:08,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:08,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263197147] [2020-10-15 19:26:08,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:26:08,935 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:26:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:26:08,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:26:08,971 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:26:08,974 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:26:08,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 19:26:08,975 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:26:08,975 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:26:08,976 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-15 19:26:08,986 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,986 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,986 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,986 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,986 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,987 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,987 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,987 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,987 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,987 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,988 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,988 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,988 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,988 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,988 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,988 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,989 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,989 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,989 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,989 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,989 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,990 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,990 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,990 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,991 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,991 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,991 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,992 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,992 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,992 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,994 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,994 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,994 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,995 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,995 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,996 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,996 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,996 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,997 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,997 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,998 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,998 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,998 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,999 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,999 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:08,999 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,000 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,000 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,001 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,001 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,001 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,001 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,002 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,002 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,003 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,003 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,003 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,004 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,004 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,004 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,005 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,005 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,005 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,006 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,006 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,006 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:09,007 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-15 19:26:09,007 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:26:09,008 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:26:09,008 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:26:09,008 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:26:09,008 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:26:09,008 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:26:09,008 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:26:09,008 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:26:09,010 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:26:09,011 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-15 19:26:09,011 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-15 19:26:09,011 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-10-15 19:26:09,030 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-15 19:26:09,031 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-15 19:26:09,032 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-10-15 19:26:09,034 INFO L117 LiptonReduction]: Number of co-enabled transitions 1308 [2020-10-15 19:26:10,362 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-15 19:26:10,606 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-15 19:26:10,738 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-15 19:26:10,744 INFO L132 LiptonReduction]: Checked pairs total: 1841 [2020-10-15 19:26:10,745 INFO L134 LiptonReduction]: Total number of compositions: 79 [2020-10-15 19:26:10,745 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-15 19:26:10,769 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-15 19:26:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-15 19:26:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 19:26:10,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:10,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 19:26:10,770 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:10,770 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-10-15 19:26:10,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:10,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720649365] [2020-10-15 19:26:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:10,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720649365] [2020-10-15 19:26:10,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:10,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 19:26:10,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281151222] [2020-10-15 19:26:10,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:26:10,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:10,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:26:10,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:26:10,798 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-15 19:26:10,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:10,840 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-15 19:26:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:26:10,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 19:26:10,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:10,846 INFO L225 Difference]: With dead ends: 600 [2020-10-15 19:26:10,846 INFO L226 Difference]: Without dead ends: 559 [2020-10-15 19:26:10,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:26:10,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-15 19:26:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-15 19:26:10,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-15 19:26:10,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-15 19:26:10,889 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-15 19:26:10,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:10,889 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-15 19:26:10,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:26:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-15 19:26:10,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 19:26:10,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:10,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:10,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 19:26:10,891 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:10,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:10,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-10-15 19:26:10,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:10,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103041863] [2020-10-15 19:26:10,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:10,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103041863] [2020-10-15 19:26:10,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:10,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:26:10,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071345069] [2020-10-15 19:26:10,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:26:10,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:10,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:26:10,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:26:10,969 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-15 19:26:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:11,064 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-15 19:26:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:11,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 19:26:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:11,075 INFO L225 Difference]: With dead ends: 817 [2020-10-15 19:26:11,075 INFO L226 Difference]: Without dead ends: 812 [2020-10-15 19:26:11,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:11,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-15 19:26:11,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-15 19:26:11,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-15 19:26:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-15 19:26:11,104 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-15 19:26:11,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:11,104 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-15 19:26:11,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:26:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-15 19:26:11,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:26:11,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:11,106 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:11,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 19:26:11,106 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:11,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:11,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-10-15 19:26:11,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:11,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397161555] [2020-10-15 19:26:11,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:11,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397161555] [2020-10-15 19:26:11,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:11,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:26:11,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473860948] [2020-10-15 19:26:11,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:26:11,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:11,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:26:11,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:26:11,151 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-15 19:26:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:11,233 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-15 19:26:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:11,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 19:26:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:11,240 INFO L225 Difference]: With dead ends: 843 [2020-10-15 19:26:11,240 INFO L226 Difference]: Without dead ends: 836 [2020-10-15 19:26:11,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-15 19:26:11,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-15 19:26:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-15 19:26:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-15 19:26:11,267 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-15 19:26:11,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:11,268 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-15 19:26:11,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:26:11,268 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-15 19:26:11,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 19:26:11,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:11,269 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:11,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 19:26:11,270 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:11,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:11,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-10-15 19:26:11,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:11,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252182042] [2020-10-15 19:26:11,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:11,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252182042] [2020-10-15 19:26:11,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502947103] [2020-10-15 19:26:11,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:11,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:26:11,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:11,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:11,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:26:11,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299055920] [2020-10-15 19:26:11,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:26:11,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:11,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:26:11,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:26:11,481 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-10-15 19:26:11,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:11,770 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-15 19:26:11,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:11,771 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-15 19:26:11,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:11,779 INFO L225 Difference]: With dead ends: 1059 [2020-10-15 19:26:11,779 INFO L226 Difference]: Without dead ends: 1052 [2020-10-15 19:26:11,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:26:11,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-15 19:26:11,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-15 19:26:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-15 19:26:11,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-15 19:26:11,811 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-15 19:26:11,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:11,814 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-15 19:26:11,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:26:11,814 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-15 19:26:11,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 19:26:11,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:11,816 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:12,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-15 19:26:12,030 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:12,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:12,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-10-15 19:26:12,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:12,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871127800] [2020-10-15 19:26:12,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:12,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871127800] [2020-10-15 19:26:12,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:12,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:26:12,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548570475] [2020-10-15 19:26:12,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:26:12,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:12,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:26:12,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:12,082 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-15 19:26:12,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:12,323 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-15 19:26:12,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:12,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-15 19:26:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:12,331 INFO L225 Difference]: With dead ends: 1053 [2020-10-15 19:26:12,331 INFO L226 Difference]: Without dead ends: 1045 [2020-10-15 19:26:12,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:26:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-15 19:26:12,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-15 19:26:12,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-15 19:26:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-15 19:26:12,357 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-15 19:26:12,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:12,358 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-15 19:26:12,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:26:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-15 19:26:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 19:26:12,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:12,359 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:12,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 19:26:12,359 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:12,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:12,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-10-15 19:26:12,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:12,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175021526] [2020-10-15 19:26:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:26:12,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175021526] [2020-10-15 19:26:12,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:12,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:26:12,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232035733] [2020-10-15 19:26:12,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:26:12,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:12,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:26:12,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:26:12,435 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-15 19:26:12,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:12,521 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-15 19:26:12,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:12,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-15 19:26:12,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:12,526 INFO L225 Difference]: With dead ends: 736 [2020-10-15 19:26:12,526 INFO L226 Difference]: Without dead ends: 728 [2020-10-15 19:26:12,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:12,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-15 19:26:12,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-15 19:26:12,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-15 19:26:12,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-15 19:26:12,548 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-15 19:26:12,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:12,548 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-15 19:26:12,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:26:12,548 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-15 19:26:12,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 19:26:12,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:12,550 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:12,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 19:26:12,550 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:12,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:12,550 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-10-15 19:26:12,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:12,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667047422] [2020-10-15 19:26:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:26:12,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:26:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:26:12,579 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:26:12,587 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:26:12,587 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:26:12,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 19:26:12,588 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:26:12,588 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:26:12,589 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-15 19:26:12,607 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,607 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,607 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,607 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,607 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,608 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,608 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,608 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,608 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,608 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,608 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,609 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,609 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,609 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,609 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,609 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,609 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,610 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,611 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,612 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,612 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,612 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,612 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,612 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,612 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,612 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,613 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,613 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,614 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,614 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,614 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,614 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,614 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,614 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,614 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,614 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,615 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,615 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,617 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,617 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,618 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,618 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,618 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,619 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,620 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,620 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,620 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,620 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,621 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,621 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,622 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,622 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,622 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,623 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,623 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,623 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,624 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,625 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,625 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,625 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,626 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,626 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,626 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,627 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,627 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,628 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,628 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,628 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,628 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,629 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,630 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,630 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,630 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,630 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,630 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:12,633 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-15 19:26:12,634 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:26:12,634 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:26:12,634 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:26:12,634 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:26:12,634 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:26:12,634 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:26:12,634 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:26:12,634 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:26:12,636 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:26:12,636 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-15 19:26:12,636 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-15 19:26:12,636 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-10-15 19:26:12,660 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-15 19:26:12,660 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-15 19:26:12,661 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-10-15 19:26:12,665 INFO L117 LiptonReduction]: Number of co-enabled transitions 1756 [2020-10-15 19:26:14,216 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-15 19:26:14,503 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-15 19:26:14,668 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-15 19:26:14,769 INFO L132 LiptonReduction]: Checked pairs total: 2590 [2020-10-15 19:26:14,769 INFO L134 LiptonReduction]: Total number of compositions: 92 [2020-10-15 19:26:14,769 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-15 19:26:14,884 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-15 19:26:14,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-15 19:26:14,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 19:26:14,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:14,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 19:26:14,885 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:14,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:14,885 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-10-15 19:26:14,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:14,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581024261] [2020-10-15 19:26:14,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:14,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:14,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581024261] [2020-10-15 19:26:14,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:14,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 19:26:14,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965398907] [2020-10-15 19:26:14,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:26:14,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:14,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:26:14,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:26:14,905 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-15 19:26:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:14,954 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-15 19:26:14,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:26:14,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 19:26:14,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:14,969 INFO L225 Difference]: With dead ends: 1889 [2020-10-15 19:26:14,969 INFO L226 Difference]: Without dead ends: 1767 [2020-10-15 19:26:14,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:26:14,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-15 19:26:15,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-15 19:26:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-15 19:26:15,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-15 19:26:15,046 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-15 19:26:15,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:15,046 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-15 19:26:15,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:26:15,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-15 19:26:15,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 19:26:15,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:15,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:15,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 19:26:15,047 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:15,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:15,048 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-10-15 19:26:15,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:15,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091064449] [2020-10-15 19:26:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:15,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091064449] [2020-10-15 19:26:15,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:15,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:26:15,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878735367] [2020-10-15 19:26:15,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:26:15,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:15,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:26:15,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:26:15,099 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-15 19:26:15,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:15,190 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-15 19:26:15,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:15,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 19:26:15,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:15,213 INFO L225 Difference]: With dead ends: 2905 [2020-10-15 19:26:15,213 INFO L226 Difference]: Without dead ends: 2899 [2020-10-15 19:26:15,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:15,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-15 19:26:15,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-15 19:26:15,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-15 19:26:15,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-15 19:26:15,302 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-15 19:26:15,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:15,303 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-15 19:26:15,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:26:15,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-15 19:26:15,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:26:15,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:15,304 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:15,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 19:26:15,304 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:15,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:15,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-10-15 19:26:15,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:15,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657878482] [2020-10-15 19:26:15,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:15,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657878482] [2020-10-15 19:26:15,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:15,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:26:15,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463277984] [2020-10-15 19:26:15,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:26:15,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:15,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:26:15,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:26:15,353 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-15 19:26:15,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:15,451 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-15 19:26:15,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:15,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 19:26:15,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:15,484 INFO L225 Difference]: With dead ends: 3204 [2020-10-15 19:26:15,485 INFO L226 Difference]: Without dead ends: 3194 [2020-10-15 19:26:15,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:15,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-15 19:26:15,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-15 19:26:15,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-15 19:26:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-15 19:26:15,575 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-15 19:26:15,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:15,577 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-15 19:26:15,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:26:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-15 19:26:15,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 19:26:15,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:15,578 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:15,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 19:26:15,578 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:15,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:15,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-10-15 19:26:15,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:15,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111033436] [2020-10-15 19:26:15,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:15,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111033436] [2020-10-15 19:26:15,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384518371] [2020-10-15 19:26:15,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:15,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:26:15,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:15,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:15,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:26:15,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356029098] [2020-10-15 19:26:15,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:26:15,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:15,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:26:15,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:26:15,776 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-10-15 19:26:16,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:16,163 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-15 19:26:16,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:16,164 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-15 19:26:16,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:16,192 INFO L225 Difference]: With dead ends: 4556 [2020-10-15 19:26:16,193 INFO L226 Difference]: Without dead ends: 4546 [2020-10-15 19:26:16,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:26:16,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-15 19:26:16,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-15 19:26:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-15 19:26:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-15 19:26:16,295 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-15 19:26:16,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:16,295 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-15 19:26:16,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:26:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-15 19:26:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 19:26:16,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:16,296 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:16,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-15 19:26:16,509 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:16,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-10-15 19:26:16,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:16,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161058377] [2020-10-15 19:26:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:16,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161058377] [2020-10-15 19:26:16,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:16,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:26:16,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399053632] [2020-10-15 19:26:16,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:26:16,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:16,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:26:16,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:16,573 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-15 19:26:16,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:16,845 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-15 19:26:16,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:16,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-15 19:26:16,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:16,862 INFO L225 Difference]: With dead ends: 4612 [2020-10-15 19:26:16,862 INFO L226 Difference]: Without dead ends: 4601 [2020-10-15 19:26:16,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:26:16,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-15 19:26:16,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-15 19:26:16,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-15 19:26:16,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-15 19:26:16,956 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-15 19:26:16,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:16,956 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-15 19:26:16,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:26:16,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-15 19:26:16,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 19:26:16,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:16,957 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:16,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 19:26:16,958 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:16,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:16,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-10-15 19:26:16,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:16,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388465726] [2020-10-15 19:26:16,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:26:17,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388465726] [2020-10-15 19:26:17,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:17,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:26:17,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226311815] [2020-10-15 19:26:17,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:26:17,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:17,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:26:17,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:26:17,005 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-15 19:26:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:17,113 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-15 19:26:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:17,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-15 19:26:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:17,125 INFO L225 Difference]: With dead ends: 3265 [2020-10-15 19:26:17,126 INFO L226 Difference]: Without dead ends: 3250 [2020-10-15 19:26:17,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-15 19:26:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-15 19:26:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-15 19:26:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-15 19:26:17,207 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-15 19:26:17,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:17,208 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-15 19:26:17,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:26:17,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-15 19:26:17,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:26:17,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:17,209 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:17,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 19:26:17,209 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:17,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:17,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-10-15 19:26:17,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:17,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794769410] [2020-10-15 19:26:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:26:17,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794769410] [2020-10-15 19:26:17,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129565762] [2020-10-15 19:26:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:17,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:26:17,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:26:17,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:17,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:26:17,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683925308] [2020-10-15 19:26:17,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:26:17,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:17,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:26:17,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:26:17,403 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-10-15 19:26:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:17,816 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-15 19:26:17,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:17,816 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 19:26:17,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:17,830 INFO L225 Difference]: With dead ends: 4825 [2020-10-15 19:26:17,830 INFO L226 Difference]: Without dead ends: 4813 [2020-10-15 19:26:17,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:26:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-15 19:26:17,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-15 19:26:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-15 19:26:17,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-15 19:26:17,931 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-15 19:26:17,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:17,931 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-15 19:26:17,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:26:17,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-15 19:26:17,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:26:17,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:17,933 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:18,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:18,146 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:18,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:18,147 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-10-15 19:26:18,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:18,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348918361] [2020-10-15 19:26:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:18,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348918361] [2020-10-15 19:26:18,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087278955] [2020-10-15 19:26:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:18,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:26:18,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:18,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:18,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:26:18,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48298101] [2020-10-15 19:26:18,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:26:18,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:18,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:26:18,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:26:18,380 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-10-15 19:26:18,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:18,696 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-15 19:26:18,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:18,696 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 19:26:18,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:18,712 INFO L225 Difference]: With dead ends: 4942 [2020-10-15 19:26:18,712 INFO L226 Difference]: Without dead ends: 4925 [2020-10-15 19:26:18,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:26:18,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-15 19:26:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-15 19:26:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-15 19:26:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-15 19:26:18,818 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-15 19:26:18,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:18,818 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-15 19:26:18,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:26:18,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-15 19:26:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:26:18,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:18,821 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:19,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:19,035 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:19,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:19,036 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-10-15 19:26:19,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:19,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210159156] [2020-10-15 19:26:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:26:19,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210159156] [2020-10-15 19:26:19,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:19,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:26:19,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994948794] [2020-10-15 19:26:19,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:26:19,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:19,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:26:19,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:19,117 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-15 19:26:19,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:19,360 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-15 19:26:19,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:19,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 19:26:19,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:19,374 INFO L225 Difference]: With dead ends: 4934 [2020-10-15 19:26:19,374 INFO L226 Difference]: Without dead ends: 4917 [2020-10-15 19:26:19,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:26:19,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-15 19:26:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-15 19:26:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-15 19:26:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-15 19:26:19,463 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-15 19:26:19,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:19,464 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-15 19:26:19,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:26:19,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-15 19:26:19,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:26:19,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:19,465 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:19,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 19:26:19,466 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:19,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:19,466 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-10-15 19:26:19,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:19,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727512534] [2020-10-15 19:26:19,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:26:19,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727512534] [2020-10-15 19:26:19,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:19,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:26:19,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226613427] [2020-10-15 19:26:19,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:26:19,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:19,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:26:19,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:19,534 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-15 19:26:19,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:19,836 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-15 19:26:19,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:19,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 19:26:19,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:19,846 INFO L225 Difference]: With dead ends: 4774 [2020-10-15 19:26:19,847 INFO L226 Difference]: Without dead ends: 4757 [2020-10-15 19:26:19,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:26:19,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-15 19:26:19,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-15 19:26:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-15 19:26:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-15 19:26:19,907 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-15 19:26:19,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:19,907 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-15 19:26:19,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:26:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-15 19:26:19,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:19,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:19,909 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:19,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 19:26:19,909 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:19,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-10-15 19:26:19,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:19,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804651330] [2020-10-15 19:26:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:19,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804651330] [2020-10-15 19:26:19,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651003034] [2020-10-15 19:26:19,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:20,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:26:20,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:20,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:20,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:26:20,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998407800] [2020-10-15 19:26:20,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:26:20,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:20,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:26:20,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:26:20,163 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-10-15 19:26:20,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:20,918 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-15 19:26:20,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:26:20,919 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 19:26:20,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:20,928 INFO L225 Difference]: With dead ends: 6025 [2020-10-15 19:26:20,928 INFO L226 Difference]: Without dead ends: 6017 [2020-10-15 19:26:20,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:26:20,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-15 19:26:20,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-15 19:26:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-15 19:26:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-15 19:26:20,994 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-15 19:26:20,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:20,994 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-15 19:26:20,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:26:20,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-15 19:26:20,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:20,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:20,996 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:21,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-15 19:26:21,197 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:21,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:21,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-10-15 19:26:21,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:21,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959009155] [2020-10-15 19:26:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:26:21,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959009155] [2020-10-15 19:26:21,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703156373] [2020-10-15 19:26:21,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:21,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:26:21,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:26:21,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:26:21,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:26:21,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:21,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:26:21,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957072313] [2020-10-15 19:26:21,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:26:21,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:21,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:26:21,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:26:21,482 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-10-15 19:26:22,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:22,359 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-15 19:26:22,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:26:22,359 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 19:26:22,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:22,371 INFO L225 Difference]: With dead ends: 5914 [2020-10-15 19:26:22,371 INFO L226 Difference]: Without dead ends: 5903 [2020-10-15 19:26:22,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:26:22,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-15 19:26:22,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-15 19:26:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-15 19:26:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-15 19:26:22,463 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-15 19:26:22,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:22,464 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-15 19:26:22,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:26:22,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-15 19:26:22,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:22,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:22,467 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:22,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:22,681 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:22,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:22,683 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-10-15 19:26:22,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:22,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903905169] [2020-10-15 19:26:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:22,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903905169] [2020-10-15 19:26:22,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111918423] [2020-10-15 19:26:22,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:22,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:26:22,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:26:22,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:26:22,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:22,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:22,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:26:22,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991009696] [2020-10-15 19:26:22,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:26:22,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:22,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:26:22,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:26:22,914 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-10-15 19:26:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:23,691 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-15 19:26:23,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:26:23,691 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 19:26:23,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:23,700 INFO L225 Difference]: With dead ends: 5907 [2020-10-15 19:26:23,700 INFO L226 Difference]: Without dead ends: 5899 [2020-10-15 19:26:23,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:26:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-15 19:26:23,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-15 19:26:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-15 19:26:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-15 19:26:23,792 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-15 19:26:23,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:23,792 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-15 19:26:23,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:26:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-15 19:26:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:23,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:23,794 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:24,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-15 19:26:24,007 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:24,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:24,008 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-10-15 19:26:24,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:24,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302784470] [2020-10-15 19:26:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:24,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302784470] [2020-10-15 19:26:24,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871348486] [2020-10-15 19:26:24,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:24,211 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:26:24,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:26:24,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:26:24,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:24,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:24,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:26:24,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242475820] [2020-10-15 19:26:24,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:26:24,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:24,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:26:24,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:26:24,310 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-10-15 19:26:25,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:25,094 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-15 19:26:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:26:25,094 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 19:26:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:25,103 INFO L225 Difference]: With dead ends: 5835 [2020-10-15 19:26:25,103 INFO L226 Difference]: Without dead ends: 5824 [2020-10-15 19:26:25,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:26:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-15 19:26:25,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-15 19:26:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-15 19:26:25,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-15 19:26:25,167 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-15 19:26:25,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:25,167 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-15 19:26:25,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:26:25,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-15 19:26:25,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:25,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:25,169 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:25,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-15 19:26:25,382 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:25,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:25,383 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-10-15 19:26:25,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:25,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976638921] [2020-10-15 19:26:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:26:25,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976638921] [2020-10-15 19:26:25,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:25,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:26:25,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219712586] [2020-10-15 19:26:25,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:26:25,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:25,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:26:25,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:26:25,476 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-10-15 19:26:26,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:26,164 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-10-15 19:26:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:26:26,164 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 19:26:26,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:26,173 INFO L225 Difference]: With dead ends: 5820 [2020-10-15 19:26:26,173 INFO L226 Difference]: Without dead ends: 5812 [2020-10-15 19:26:26,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:26:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-10-15 19:26:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-10-15 19:26:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-10-15 19:26:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-10-15 19:26:26,235 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-10-15 19:26:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:26,235 INFO L481 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-10-15 19:26:26,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:26:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-10-15 19:26:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:26,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:26,237 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:26,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 19:26:26,237 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:26,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:26,238 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-10-15 19:26:26,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:26,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764841757] [2020-10-15 19:26:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:26:26,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764841757] [2020-10-15 19:26:26,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:26,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:26:26,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893887643] [2020-10-15 19:26:26,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:26:26,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:26,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:26:26,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:26:26,306 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-10-15 19:26:27,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:27,016 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-10-15 19:26:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:26:27,016 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 19:26:27,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:27,025 INFO L225 Difference]: With dead ends: 5717 [2020-10-15 19:26:27,025 INFO L226 Difference]: Without dead ends: 5705 [2020-10-15 19:26:27,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:26:27,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-10-15 19:26:27,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-10-15 19:26:27,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-10-15 19:26:27,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-10-15 19:26:27,107 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-10-15 19:26:27,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:27,108 INFO L481 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-10-15 19:26:27,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:26:27,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-10-15 19:26:27,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:27,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:27,109 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:27,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 19:26:27,110 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:27,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:27,110 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-10-15 19:26:27,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:27,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968557200] [2020-10-15 19:26:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:26:27,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968557200] [2020-10-15 19:26:27,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:27,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:26:27,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021273331] [2020-10-15 19:26:27,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:26:27,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:27,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:26:27,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:26:27,149 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-10-15 19:26:27,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:27,246 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-10-15 19:26:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:27,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-15 19:26:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:27,254 INFO L225 Difference]: With dead ends: 2762 [2020-10-15 19:26:27,254 INFO L226 Difference]: Without dead ends: 2746 [2020-10-15 19:26:27,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:27,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-10-15 19:26:27,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-10-15 19:26:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-15 19:26:27,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-15 19:26:27,320 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-15 19:26:27,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:27,320 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-15 19:26:27,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:26:27,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-15 19:26:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 19:26:27,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:27,323 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:27,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 19:26:27,323 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 19:26:27,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:27,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-10-15 19:26:27,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:27,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391527555] [2020-10-15 19:26:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:26:27,339 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:26:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:26:27,348 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:26:27,363 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:26:27,363 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:26:27,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 19:26:27,363 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:26:27,365 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:26:27,365 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-15 19:26:27,384 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,384 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,384 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,384 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,384 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,385 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,385 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,386 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,386 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,386 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,387 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,388 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,388 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,389 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,389 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,389 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,389 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,389 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,389 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,389 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,389 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,390 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,390 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,390 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,390 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,391 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,391 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,392 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,392 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,392 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,392 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,393 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,393 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,393 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,394 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,394 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,394 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,395 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,395 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,395 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,396 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,396 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,396 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,397 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,398 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,399 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,399 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,400 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,400 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,401 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,401 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,402 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,402 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,402 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,402 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,402 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,407 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,407 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,408 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,408 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,408 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,408 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,409 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,409 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,409 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,410 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,411 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,411 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,411 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,411 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,412 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,412 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:26:27,412 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-15 19:26:27,413 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:26:27,413 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:26:27,413 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:26:27,413 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:26:27,413 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:26:27,413 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:26:27,413 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:26:27,413 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:26:27,415 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:26:27,415 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-15 19:26:27,415 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-15 19:26:27,415 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-10-15 19:26:27,441 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-15 19:26:27,442 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-15 19:26:27,443 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-10-15 19:26:27,448 INFO L117 LiptonReduction]: Number of co-enabled transitions 2264 [2020-10-15 19:26:29,073 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-15 19:26:29,304 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-15 19:26:29,504 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-15 19:26:29,584 INFO L132 LiptonReduction]: Checked pairs total: 4038 [2020-10-15 19:26:29,585 INFO L134 LiptonReduction]: Total number of compositions: 111 [2020-10-15 19:26:29,585 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-15 19:26:30,077 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-15 19:26:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-15 19:26:30,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 19:26:30,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:30,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 19:26:30,078 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:30,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:30,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-10-15 19:26:30,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:30,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595397241] [2020-10-15 19:26:30,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:30,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595397241] [2020-10-15 19:26:30,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:30,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 19:26:30,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316788947] [2020-10-15 19:26:30,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:26:30,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:30,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:26:30,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:26:30,098 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-15 19:26:30,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:30,175 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-15 19:26:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:26:30,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 19:26:30,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:30,188 INFO L225 Difference]: With dead ends: 5844 [2020-10-15 19:26:30,189 INFO L226 Difference]: Without dead ends: 5479 [2020-10-15 19:26:30,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:26:30,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-15 19:26:30,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-15 19:26:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-15 19:26:30,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-15 19:26:30,347 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-15 19:26:30,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:30,347 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-15 19:26:30,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:26:30,347 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-15 19:26:30,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 19:26:30,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:30,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:30,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 19:26:30,348 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:30,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:30,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-10-15 19:26:30,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:30,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514169347] [2020-10-15 19:26:30,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:30,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514169347] [2020-10-15 19:26:30,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:30,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:26:30,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006068072] [2020-10-15 19:26:30,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:26:30,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:30,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:26:30,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:26:30,380 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-15 19:26:30,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:30,539 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-15 19:26:30,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:30,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 19:26:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:30,570 INFO L225 Difference]: With dead ends: 9673 [2020-10-15 19:26:30,570 INFO L226 Difference]: Without dead ends: 9666 [2020-10-15 19:26:30,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:30,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-15 19:26:30,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-15 19:26:30,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-15 19:26:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-15 19:26:30,924 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-15 19:26:30,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:30,924 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-15 19:26:30,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:26:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-15 19:26:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:26:30,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:30,925 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:30,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 19:26:30,925 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:30,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:30,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-10-15 19:26:30,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:30,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822536524] [2020-10-15 19:26:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:30,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822536524] [2020-10-15 19:26:30,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:30,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:26:30,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933268152] [2020-10-15 19:26:30,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:26:30,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:30,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:26:30,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:26:30,958 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-15 19:26:31,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:31,118 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-15 19:26:31,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:31,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 19:26:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:31,145 INFO L225 Difference]: With dead ends: 11081 [2020-10-15 19:26:31,145 INFO L226 Difference]: Without dead ends: 11068 [2020-10-15 19:26:31,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:31,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-15 19:26:31,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-15 19:26:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-15 19:26:31,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-15 19:26:31,390 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-15 19:26:31,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:31,390 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-15 19:26:31,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:26:31,391 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-15 19:26:31,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 19:26:31,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:31,391 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:31,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 19:26:31,391 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:31,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:31,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-10-15 19:26:31,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:31,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117820178] [2020-10-15 19:26:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:31,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117820178] [2020-10-15 19:26:31,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526175926] [2020-10-15 19:26:31,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:31,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:26:31,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:31,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:31,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:26:31,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529849380] [2020-10-15 19:26:31,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:26:31,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:31,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:26:31,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:26:31,562 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-10-15 19:26:31,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:31,938 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-15 19:26:31,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:31,939 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-15 19:26:31,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:31,976 INFO L225 Difference]: With dead ends: 16749 [2020-10-15 19:26:31,976 INFO L226 Difference]: Without dead ends: 16736 [2020-10-15 19:26:31,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:26:32,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-15 19:26:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-15 19:26:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-15 19:26:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-15 19:26:32,437 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-15 19:26:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:32,437 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-15 19:26:32,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:26:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-15 19:26:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 19:26:32,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:32,438 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:32,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:32,639 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:32,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:32,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-10-15 19:26:32,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:32,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116599047] [2020-10-15 19:26:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:32,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116599047] [2020-10-15 19:26:32,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:32,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:26:32,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850410904] [2020-10-15 19:26:32,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:26:32,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:32,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:26:32,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:32,681 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-15 19:26:33,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:33,027 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-15 19:26:33,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:33,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-15 19:26:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:33,069 INFO L225 Difference]: With dead ends: 17085 [2020-10-15 19:26:33,069 INFO L226 Difference]: Without dead ends: 17071 [2020-10-15 19:26:33,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:26:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-15 19:26:33,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-15 19:26:33,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-15 19:26:33,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-15 19:26:33,330 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-15 19:26:33,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:33,330 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-15 19:26:33,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:26:33,330 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-15 19:26:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 19:26:33,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:33,331 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:33,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 19:26:33,331 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:33,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:33,331 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-10-15 19:26:33,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:33,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564668834] [2020-10-15 19:26:33,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:26:33,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564668834] [2020-10-15 19:26:33,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:33,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:26:33,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971862557] [2020-10-15 19:26:33,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:26:33,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:33,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:26:33,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:26:33,370 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-15 19:26:33,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:33,537 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-15 19:26:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:33,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-15 19:26:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:33,591 INFO L225 Difference]: With dead ends: 12234 [2020-10-15 19:26:33,592 INFO L226 Difference]: Without dead ends: 12212 [2020-10-15 19:26:33,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:33,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-15 19:26:34,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-15 19:26:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-15 19:26:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-15 19:26:34,355 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-15 19:26:34,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:34,355 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-15 19:26:34,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:26:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-15 19:26:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:26:34,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:34,356 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:34,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 19:26:34,357 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:34,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-10-15 19:26:34,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:34,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368280488] [2020-10-15 19:26:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 19:26:34,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368280488] [2020-10-15 19:26:34,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409763238] [2020-10-15 19:26:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:34,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:26:34,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 19:26:34,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:34,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:26:34,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37222154] [2020-10-15 19:26:34,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:26:34,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:34,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:26:34,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:26:34,552 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-10-15 19:26:34,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:34,891 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-15 19:26:34,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:34,892 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 19:26:34,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:34,933 INFO L225 Difference]: With dead ends: 19016 [2020-10-15 19:26:34,934 INFO L226 Difference]: Without dead ends: 18998 [2020-10-15 19:26:34,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:26:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-15 19:26:35,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-15 19:26:35,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-15 19:26:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-15 19:26:35,239 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-15 19:26:35,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:35,240 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-15 19:26:35,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:26:35,240 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-15 19:26:35,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:26:35,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:35,241 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:35,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-15 19:26:35,448 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:35,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:35,448 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-10-15 19:26:35,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:35,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099373305] [2020-10-15 19:26:35,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:35,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099373305] [2020-10-15 19:26:35,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968894865] [2020-10-15 19:26:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:35,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:26:35,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:35,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:35,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:35,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:26:35,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033143904] [2020-10-15 19:26:35,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:26:35,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:35,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:26:35,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:26:35,644 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-10-15 19:26:36,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:36,175 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-10-15 19:26:36,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:36,176 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 19:26:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:36,265 INFO L225 Difference]: With dead ends: 19670 [2020-10-15 19:26:36,265 INFO L226 Difference]: Without dead ends: 19645 [2020-10-15 19:26:36,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:26:37,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-10-15 19:26:37,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-10-15 19:26:37,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-10-15 19:26:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-10-15 19:26:37,813 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-10-15 19:26:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:37,813 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-10-15 19:26:37,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:26:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-10-15 19:26:37,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:26:37,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:37,815 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:38,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-15 19:26:38,021 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:38,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:38,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-10-15 19:26:38,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:38,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314936832] [2020-10-15 19:26:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:26:38,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314936832] [2020-10-15 19:26:38,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:38,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:26:38,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463247779] [2020-10-15 19:26:38,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:26:38,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:38,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:26:38,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:38,070 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-10-15 19:26:38,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:38,562 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-10-15 19:26:38,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:38,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 19:26:38,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:38,648 INFO L225 Difference]: With dead ends: 19852 [2020-10-15 19:26:38,648 INFO L226 Difference]: Without dead ends: 19827 [2020-10-15 19:26:38,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:26:38,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-15 19:26:39,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-10-15 19:26:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-10-15 19:26:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-10-15 19:26:39,232 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-10-15 19:26:39,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:39,232 INFO L481 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-10-15 19:26:39,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:26:39,232 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-10-15 19:26:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:26:39,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:39,233 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:39,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-15 19:26:39,234 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:39,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:39,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-10-15 19:26:39,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:39,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701534278] [2020-10-15 19:26:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:26:39,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701534278] [2020-10-15 19:26:39,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:39,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:26:39,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119050982] [2020-10-15 19:26:39,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:26:39,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:39,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:26:39,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:39,283 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-10-15 19:26:39,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:39,624 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-15 19:26:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:39,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 19:26:39,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:39,873 INFO L225 Difference]: With dead ends: 19555 [2020-10-15 19:26:39,873 INFO L226 Difference]: Without dead ends: 19530 [2020-10-15 19:26:39,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:26:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-15 19:26:40,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-15 19:26:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-15 19:26:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-15 19:26:40,174 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-15 19:26:40,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:40,174 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-15 19:26:40,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:26:40,174 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-15 19:26:40,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:40,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:40,176 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:40,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-15 19:26:40,176 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:40,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:40,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-10-15 19:26:40,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:40,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808094445] [2020-10-15 19:26:40,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:40,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808094445] [2020-10-15 19:26:40,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412708429] [2020-10-15 19:26:40,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:40,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:26:40,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:26:40,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:40,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:26:40,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245058529] [2020-10-15 19:26:40,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:26:40,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:40,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:26:40,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:26:40,434 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-10-15 19:26:41,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:41,407 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-15 19:26:41,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:26:41,408 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 19:26:41,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:41,468 INFO L225 Difference]: With dead ends: 26969 [2020-10-15 19:26:41,468 INFO L226 Difference]: Without dead ends: 26957 [2020-10-15 19:26:41,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:26:41,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-15 19:26:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-10-15 19:26:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-10-15 19:26:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-10-15 19:26:41,856 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-10-15 19:26:41,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:41,856 INFO L481 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-10-15 19:26:41,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:26:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-10-15 19:26:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:41,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:41,858 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:42,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:42,058 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:42,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:42,059 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-10-15 19:26:42,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:42,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791868444] [2020-10-15 19:26:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 19:26:42,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791868444] [2020-10-15 19:26:42,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934575523] [2020-10-15 19:26:42,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:42,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:26:42,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:26:42,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:26:42,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:42,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 19:26:42,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:42,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:26:42,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449312071] [2020-10-15 19:26:42,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:26:42,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:42,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:26:42,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:26:42,480 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-10-15 19:26:43,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:43,478 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-10-15 19:26:43,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:26:43,478 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 19:26:43,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:43,535 INFO L225 Difference]: With dead ends: 26661 [2020-10-15 19:26:43,536 INFO L226 Difference]: Without dead ends: 26645 [2020-10-15 19:26:43,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:26:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-10-15 19:26:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-10-15 19:26:43,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-15 19:26:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-15 19:26:43,902 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-15 19:26:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:43,902 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-15 19:26:43,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:26:43,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-15 19:26:43,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:43,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:43,903 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:44,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-15 19:26:44,104 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:44,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:44,104 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-10-15 19:26:44,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:44,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974265067] [2020-10-15 19:26:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:44,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974265067] [2020-10-15 19:26:44,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950888462] [2020-10-15 19:26:44,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:44,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:26:44,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:26:44,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:26:44,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:44,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:44,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:26:44,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116160859] [2020-10-15 19:26:44,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:26:44,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:44,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:26:44,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:26:44,335 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-10-15 19:26:45,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:45,267 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-10-15 19:26:45,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:26:45,267 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 19:26:45,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:45,331 INFO L225 Difference]: With dead ends: 26686 [2020-10-15 19:26:45,331 INFO L226 Difference]: Without dead ends: 26674 [2020-10-15 19:26:45,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:26:45,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-10-15 19:26:45,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-10-15 19:26:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-10-15 19:26:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-10-15 19:26:45,870 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-10-15 19:26:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:45,870 INFO L481 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-10-15 19:26:45,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:26:45,870 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-10-15 19:26:45,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:45,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:45,871 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:46,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:46,086 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:46,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:46,087 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-10-15 19:26:46,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:46,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092873292] [2020-10-15 19:26:46,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:46,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092873292] [2020-10-15 19:26:46,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387843920] [2020-10-15 19:26:46,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:46,220 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:26:46,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:26:46,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:26:46,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:26:46,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:46,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:26:46,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990215069] [2020-10-15 19:26:46,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:26:46,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:46,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:26:46,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:26:46,317 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-10-15 19:26:47,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:47,299 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-10-15 19:26:47,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:26:47,299 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 19:26:47,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:47,368 INFO L225 Difference]: With dead ends: 26489 [2020-10-15 19:26:47,368 INFO L226 Difference]: Without dead ends: 26473 [2020-10-15 19:26:47,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:26:47,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-10-15 19:26:47,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-10-15 19:26:47,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-10-15 19:26:47,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-10-15 19:26:47,752 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-10-15 19:26:47,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:47,752 INFO L481 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-10-15 19:26:47,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:26:47,752 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-10-15 19:26:47,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:47,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:47,753 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:47,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-15 19:26:47,954 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:47,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:47,954 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-10-15 19:26:47,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:47,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336937230] [2020-10-15 19:26:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:26:47,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336937230] [2020-10-15 19:26:47,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:47,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:26:47,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702640052] [2020-10-15 19:26:47,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:26:47,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:47,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:26:47,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:26:47,988 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-10-15 19:26:48,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:48,157 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-10-15 19:26:48,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:26:48,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-15 19:26:48,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:48,192 INFO L225 Difference]: With dead ends: 13251 [2020-10-15 19:26:48,192 INFO L226 Difference]: Without dead ends: 13220 [2020-10-15 19:26:48,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:48,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-10-15 19:26:48,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-10-15 19:26:48,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-10-15 19:26:48,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-10-15 19:26:48,468 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-10-15 19:26:48,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:48,469 INFO L481 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-10-15 19:26:48,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:26:48,469 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-10-15 19:26:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:48,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:48,470 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:48,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-15 19:26:48,470 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:48,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:48,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-10-15 19:26:48,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:48,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029835397] [2020-10-15 19:26:48,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:26:48,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029835397] [2020-10-15 19:26:48,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:48,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:26:48,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620517117] [2020-10-15 19:26:48,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:26:48,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:48,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:26:48,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:26:48,699 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-10-15 19:26:49,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:49,534 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-10-15 19:26:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:26:49,535 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 19:26:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:49,596 INFO L225 Difference]: With dead ends: 29788 [2020-10-15 19:26:49,596 INFO L226 Difference]: Without dead ends: 29770 [2020-10-15 19:26:49,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:26:49,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-10-15 19:26:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-10-15 19:26:49,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-10-15 19:26:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-10-15 19:26:50,009 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-10-15 19:26:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:50,009 INFO L481 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-10-15 19:26:50,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:26:50,010 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-10-15 19:26:50,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:26:50,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:50,011 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:50,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-15 19:26:50,011 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:50,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:50,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-10-15 19:26:50,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:50,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120831875] [2020-10-15 19:26:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:50,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:26:50,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120831875] [2020-10-15 19:26:50,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:50,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:26:50,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265345082] [2020-10-15 19:26:50,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:26:50,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:50,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:26:50,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:26:50,081 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-10-15 19:26:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:50,957 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-10-15 19:26:50,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:26:50,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 19:26:50,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:51,020 INFO L225 Difference]: With dead ends: 29379 [2020-10-15 19:26:51,020 INFO L226 Difference]: Without dead ends: 29356 [2020-10-15 19:26:51,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:26:51,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-15 19:26:51,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-10-15 19:26:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-15 19:26:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-15 19:26:51,466 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-15 19:26:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:51,466 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-15 19:26:51,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:26:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-15 19:26:51,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:26:51,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:51,468 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:51,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-15 19:26:51,469 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:51,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:51,469 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-10-15 19:26:51,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:51,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827862431] [2020-10-15 19:26:51,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:26:51,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827862431] [2020-10-15 19:26:51,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771282440] [2020-10-15 19:26:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:51,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:26:51,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:51,840 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:26:51,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:51,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:26:51,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080828005] [2020-10-15 19:26:51,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:26:51,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:51,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:26:51,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:26:51,842 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-10-15 19:26:52,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:52,244 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-15 19:26:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:52,245 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 19:26:52,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:52,293 INFO L225 Difference]: With dead ends: 19727 [2020-10-15 19:26:52,293 INFO L226 Difference]: Without dead ends: 19703 [2020-10-15 19:26:52,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:26:52,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-15 19:26:52,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-15 19:26:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-15 19:26:52,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-15 19:26:52,627 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-15 19:26:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:52,627 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-15 19:26:52,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:26:52,627 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-15 19:26:52,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:26:52,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:52,630 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:52,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-15 19:26:52,831 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:52,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:52,831 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-10-15 19:26:52,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:52,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152935518] [2020-10-15 19:26:52,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:52,873 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:26:52,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152935518] [2020-10-15 19:26:52,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579563888] [2020-10-15 19:26:52,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:52,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:26:52,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:26:53,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:53,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:26:53,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542249847] [2020-10-15 19:26:53,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:26:53,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:53,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:26:53,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:26:53,003 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-10-15 19:26:53,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:53,383 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-10-15 19:26:53,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:53,384 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 19:26:53,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:53,430 INFO L225 Difference]: With dead ends: 20694 [2020-10-15 19:26:53,431 INFO L226 Difference]: Without dead ends: 20666 [2020-10-15 19:26:53,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:26:53,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-10-15 19:26:53,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-10-15 19:26:53,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-15 19:26:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-10-15 19:26:53,745 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-10-15 19:26:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:53,745 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-10-15 19:26:53,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:26:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-10-15 19:26:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:26:53,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:53,747 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:53,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:53,956 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:53,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:53,956 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-10-15 19:26:53,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:53,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838776978] [2020-10-15 19:26:53,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:54,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:26:54,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838776978] [2020-10-15 19:26:54,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655433785] [2020-10-15 19:26:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:54,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:26:54,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:26:54,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:54,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:26:54,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679512400] [2020-10-15 19:26:54,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:26:54,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:54,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:26:54,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:26:54,142 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-10-15 19:26:54,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:54,570 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-10-15 19:26:54,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:54,571 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 19:26:54,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:54,616 INFO L225 Difference]: With dead ends: 21396 [2020-10-15 19:26:54,616 INFO L226 Difference]: Without dead ends: 21359 [2020-10-15 19:26:54,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:26:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-10-15 19:26:54,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-10-15 19:26:54,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-15 19:26:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-15 19:26:55,205 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-15 19:26:55,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:55,206 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-15 19:26:55,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:26:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-15 19:26:55,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:26:55,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:55,208 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:55,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-15 19:26:55,409 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:55,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:55,409 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-10-15 19:26:55,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:55,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091175437] [2020-10-15 19:26:55,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:26:55,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091175437] [2020-10-15 19:26:55,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:55,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:26:55,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905003061] [2020-10-15 19:26:55,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:26:55,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:55,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:26:55,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:55,463 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-15 19:26:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:55,848 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-10-15 19:26:55,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:55,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 19:26:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:55,899 INFO L225 Difference]: With dead ends: 21489 [2020-10-15 19:26:55,899 INFO L226 Difference]: Without dead ends: 21452 [2020-10-15 19:26:55,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:26:56,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-10-15 19:26:56,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-10-15 19:26:56,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-15 19:26:56,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-15 19:26:56,246 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-15 19:26:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:56,246 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-15 19:26:56,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:26:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-15 19:26:56,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:26:56,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:56,248 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:56,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-15 19:26:56,248 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:56,248 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-10-15 19:26:56,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:56,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160955490] [2020-10-15 19:26:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:26:56,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160955490] [2020-10-15 19:26:56,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:56,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:26:56,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573631153] [2020-10-15 19:26:56,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:26:56,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:56,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:26:56,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:56,303 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-15 19:26:56,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:56,685 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-10-15 19:26:56,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:56,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 19:26:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:56,730 INFO L225 Difference]: With dead ends: 21198 [2020-10-15 19:26:56,730 INFO L226 Difference]: Without dead ends: 21161 [2020-10-15 19:26:56,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:26:56,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-10-15 19:26:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-10-15 19:26:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-15 19:26:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-15 19:26:57,053 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-15 19:26:57,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:57,054 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-15 19:26:57,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:26:57,054 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-15 19:26:57,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:26:57,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:57,056 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:57,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-15 19:26:57,056 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:57,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:57,056 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-10-15 19:26:57,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:57,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57671681] [2020-10-15 19:26:57,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:26:57,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57671681] [2020-10-15 19:26:57,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:26:57,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:26:57,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273477186] [2020-10-15 19:26:57,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:26:57,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:57,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:26:57,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:26:57,107 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-15 19:26:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:57,487 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-10-15 19:26:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:26:57,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 19:26:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:57,535 INFO L225 Difference]: With dead ends: 21067 [2020-10-15 19:26:57,535 INFO L226 Difference]: Without dead ends: 21030 [2020-10-15 19:26:57,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:26:57,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-10-15 19:26:57,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-10-15 19:26:57,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-15 19:26:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-15 19:26:57,870 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-15 19:26:57,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:57,870 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-15 19:26:57,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:26:57,870 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-15 19:26:57,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:26:57,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:57,873 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:57,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-15 19:26:57,873 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:57,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:57,874 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-10-15 19:26:57,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:57,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662723905] [2020-10-15 19:26:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:26:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:26:57,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662723905] [2020-10-15 19:26:57,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117462914] [2020-10-15 19:26:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:26:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:26:58,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:26:58,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:26:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:26:58,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:26:58,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:26:58,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359729998] [2020-10-15 19:26:58,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:26:58,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:26:58,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:26:58,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:26:58,123 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-10-15 19:26:59,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:26:59,313 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-15 19:26:59,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:26:59,313 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:26:59,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:26:59,376 INFO L225 Difference]: With dead ends: 30145 [2020-10-15 19:26:59,376 INFO L226 Difference]: Without dead ends: 30125 [2020-10-15 19:26:59,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:26:59,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-15 19:26:59,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-10-15 19:26:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-10-15 19:26:59,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-10-15 19:26:59,792 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-10-15 19:26:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:26:59,792 INFO L481 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-10-15 19:26:59,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:26:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-10-15 19:26:59,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:26:59,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:26:59,795 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:26:59,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-15 19:26:59,996 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:26:59,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:26:59,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-10-15 19:26:59,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:26:59,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040043317] [2020-10-15 19:26:59,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:00,059 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:27:00,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040043317] [2020-10-15 19:27:00,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579867253] [2020-10-15 19:27:00,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:00,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:27:00,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:27:00,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:00,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:27:00,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516735799] [2020-10-15 19:27:00,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:27:00,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:00,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:27:00,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:27:00,240 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-10-15 19:27:01,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:01,170 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-10-15 19:27:01,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:01,171 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:27:01,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:01,235 INFO L225 Difference]: With dead ends: 29696 [2020-10-15 19:27:01,235 INFO L226 Difference]: Without dead ends: 29676 [2020-10-15 19:27:01,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:27:01,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-10-15 19:27:01,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-10-15 19:27:01,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-15 19:27:01,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-15 19:27:01,659 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-15 19:27:01,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:01,659 INFO L481 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-15 19:27:01,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:27:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-15 19:27:01,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:01,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:01,662 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:01,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-15 19:27:01,863 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:01,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:01,864 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-10-15 19:27:01,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:01,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956755449] [2020-10-15 19:27:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:27:01,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956755449] [2020-10-15 19:27:01,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116852897] [2020-10-15 19:27:01,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:02,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:27:02,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:27:02,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:27:02,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:02,107 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:27:02,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:02,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:27:02,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921631748] [2020-10-15 19:27:02,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:27:02,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:02,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:27:02,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:27:02,109 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-10-15 19:27:03,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:03,076 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-15 19:27:03,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:03,076 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:27:03,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:03,148 INFO L225 Difference]: With dead ends: 29267 [2020-10-15 19:27:03,148 INFO L226 Difference]: Without dead ends: 29245 [2020-10-15 19:27:03,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:27:03,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-15 19:27:03,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-15 19:27:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-15 19:27:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-15 19:27:03,693 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-15 19:27:03,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:03,693 INFO L481 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-15 19:27:03,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:27:03,694 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-15 19:27:03,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:03,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:03,696 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:03,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-15 19:27:03,903 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:03,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:03,903 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-10-15 19:27:03,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:03,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478239482] [2020-10-15 19:27:03,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:27:03,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478239482] [2020-10-15 19:27:03,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109793125] [2020-10-15 19:27:03,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:04,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:27:04,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:27:04,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:27:04,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:27:04,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:04,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:27:04,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500875164] [2020-10-15 19:27:04,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:27:04,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:04,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:27:04,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:27:04,162 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-10-15 19:27:05,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:05,245 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-15 19:27:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:05,246 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:27:05,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:05,304 INFO L225 Difference]: With dead ends: 28920 [2020-10-15 19:27:05,304 INFO L226 Difference]: Without dead ends: 28898 [2020-10-15 19:27:05,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:27:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-15 19:27:05,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-15 19:27:05,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-15 19:27:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-15 19:27:05,700 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-15 19:27:05,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:05,701 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-15 19:27:05,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:27:05,701 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-15 19:27:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:05,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:05,704 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:05,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:05,904 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:05,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:05,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-10-15 19:27:05,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:05,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214030086] [2020-10-15 19:27:05,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-15 19:27:05,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214030086] [2020-10-15 19:27:05,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417868241] [2020-10-15 19:27:05,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:06,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 19:27:06,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:27:06,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:27:06,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-15 19:27:06,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:06,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:27:06,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962236014] [2020-10-15 19:27:06,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:27:06,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:06,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:27:06,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:27:06,159 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-10-15 19:27:07,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:07,109 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-10-15 19:27:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:07,109 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:27:07,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:07,171 INFO L225 Difference]: With dead ends: 29038 [2020-10-15 19:27:07,171 INFO L226 Difference]: Without dead ends: 29018 [2020-10-15 19:27:07,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:27:07,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-10-15 19:27:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-10-15 19:27:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-15 19:27:07,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-10-15 19:27:07,588 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-10-15 19:27:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:07,589 INFO L481 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-10-15 19:27:07,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:27:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-10-15 19:27:07,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:07,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:07,592 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:07,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-15 19:27:07,793 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:07,793 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-10-15 19:27:07,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:07,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266484478] [2020-10-15 19:27:07,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 19:27:07,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266484478] [2020-10-15 19:27:07,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584838947] [2020-10-15 19:27:07,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:07,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:27:07,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:08,136 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-15 19:27:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 19:27:08,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:08,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:27:08,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915932505] [2020-10-15 19:27:08,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:27:08,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:08,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:27:08,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:27:08,139 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-10-15 19:27:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:09,233 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-10-15 19:27:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:09,234 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:27:09,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:09,299 INFO L225 Difference]: With dead ends: 29417 [2020-10-15 19:27:09,299 INFO L226 Difference]: Without dead ends: 29397 [2020-10-15 19:27:09,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:27:09,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-10-15 19:27:09,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-10-15 19:27:09,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-10-15 19:27:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-10-15 19:27:09,712 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-10-15 19:27:09,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:09,713 INFO L481 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-10-15 19:27:09,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:27:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-10-15 19:27:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:09,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:09,716 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:09,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:09,916 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:09,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:09,917 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-10-15 19:27:09,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:09,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809241772] [2020-10-15 19:27:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:27:09,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809241772] [2020-10-15 19:27:09,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101562369] [2020-10-15 19:27:09,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:10,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:27:10,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:27:10,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:27:10,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:27:10,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:10,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:27:10,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928876417] [2020-10-15 19:27:10,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:27:10,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:10,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:27:10,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:27:10,222 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-10-15 19:27:11,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:11,443 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-10-15 19:27:11,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:11,444 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:27:11,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:11,539 INFO L225 Difference]: With dead ends: 29064 [2020-10-15 19:27:11,540 INFO L226 Difference]: Without dead ends: 29037 [2020-10-15 19:27:11,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:27:11,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-10-15 19:27:11,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-10-15 19:27:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-10-15 19:27:12,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-10-15 19:27:12,021 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-10-15 19:27:12,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:12,021 INFO L481 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-10-15 19:27:12,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:27:12,021 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-10-15 19:27:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:12,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:12,024 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:12,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-10-15 19:27:12,234 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:12,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:12,234 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-10-15 19:27:12,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:12,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609902097] [2020-10-15 19:27:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:27:12,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609902097] [2020-10-15 19:27:12,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388481275] [2020-10-15 19:27:12,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:12,371 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:27:12,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:27:12,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:27:12,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:27:12,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:12,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:27:12,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734326222] [2020-10-15 19:27:12,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:27:12,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:12,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:27:12,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:27:12,476 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-10-15 19:27:13,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:13,435 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-10-15 19:27:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:13,436 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:27:13,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:13,497 INFO L225 Difference]: With dead ends: 28523 [2020-10-15 19:27:13,498 INFO L226 Difference]: Without dead ends: 28501 [2020-10-15 19:27:13,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:27:13,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-10-15 19:27:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-10-15 19:27:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-15 19:27:13,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-10-15 19:27:13,944 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-10-15 19:27:13,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:13,945 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-10-15 19:27:13,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:27:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-10-15 19:27:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:13,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:13,949 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:14,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:14,150 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:14,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:14,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-10-15 19:27:14,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:14,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021456603] [2020-10-15 19:27:14,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:27:14,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021456603] [2020-10-15 19:27:14,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150516172] [2020-10-15 19:27:14,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:14,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:27:14,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:27:14,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:27:14,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:27:14,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:14,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:27:14,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690349657] [2020-10-15 19:27:14,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:27:14,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:14,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:27:14,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:27:14,514 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-10-15 19:27:15,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:15,373 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-15 19:27:15,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:15,373 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:27:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:15,435 INFO L225 Difference]: With dead ends: 28636 [2020-10-15 19:27:15,435 INFO L226 Difference]: Without dead ends: 28616 [2020-10-15 19:27:15,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:27:15,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-15 19:27:15,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-10-15 19:27:15,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-10-15 19:27:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-10-15 19:27:15,834 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-10-15 19:27:15,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:15,834 INFO L481 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-10-15 19:27:15,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:27:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-10-15 19:27:15,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:15,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:15,837 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:16,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-15 19:27:16,044 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:16,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-10-15 19:27:16,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:16,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402326234] [2020-10-15 19:27:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:27:16,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402326234] [2020-10-15 19:27:16,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312523879] [2020-10-15 19:27:16,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:16,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:27:16,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:27:16,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:27:16,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:27:16,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:16,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:27:16,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710233762] [2020-10-15 19:27:16,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:27:16,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:16,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:27:16,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:27:16,299 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-10-15 19:27:17,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:17,218 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-15 19:27:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:17,218 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:27:17,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:17,277 INFO L225 Difference]: With dead ends: 28297 [2020-10-15 19:27:17,277 INFO L226 Difference]: Without dead ends: 28277 [2020-10-15 19:27:17,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:27:17,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-15 19:27:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-10-15 19:27:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-15 19:27:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-10-15 19:27:17,651 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-10-15 19:27:17,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:17,651 INFO L481 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-10-15 19:27:17,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:27:17,652 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-10-15 19:27:17,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:17,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:17,654 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:17,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:17,855 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:17,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:17,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-10-15 19:27:17,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:17,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052957610] [2020-10-15 19:27:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:27:17,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052957610] [2020-10-15 19:27:17,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243508938] [2020-10-15 19:27:17,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:17,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:27:17,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:27:17,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:27:17,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:27:18,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:18,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:27:18,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774777546] [2020-10-15 19:27:18,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:27:18,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:18,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:27:18,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:27:18,099 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-10-15 19:27:19,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:19,207 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-15 19:27:19,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:19,207 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:27:19,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:19,267 INFO L225 Difference]: With dead ends: 28565 [2020-10-15 19:27:19,267 INFO L226 Difference]: Without dead ends: 28538 [2020-10-15 19:27:19,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:27:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-15 19:27:19,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-15 19:27:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-15 19:27:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-15 19:27:19,656 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-15 19:27:19,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:19,656 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-15 19:27:19,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:27:19,656 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-15 19:27:19,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:19,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:19,659 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:19,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-15 19:27:19,866 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:19,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:19,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-10-15 19:27:19,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:19,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705865340] [2020-10-15 19:27:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:27:19,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705865340] [2020-10-15 19:27:19,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779594504] [2020-10-15 19:27:19,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:20,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:27:20,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:27:20,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:27:20,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 19:27:20,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:20,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:27:20,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848799197] [2020-10-15 19:27:20,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:27:20,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:20,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:27:20,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:27:20,272 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-10-15 19:27:21,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:21,309 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-15 19:27:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:21,310 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:27:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:21,367 INFO L225 Difference]: With dead ends: 28213 [2020-10-15 19:27:21,367 INFO L226 Difference]: Without dead ends: 28186 [2020-10-15 19:27:21,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:27:21,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-15 19:27:21,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-15 19:27:21,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-15 19:27:21,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-15 19:27:21,737 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-15 19:27:21,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:21,738 INFO L481 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-15 19:27:21,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:27:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-15 19:27:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:21,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:21,742 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:21,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:21,943 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:21,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:21,943 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-10-15 19:27:21,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:21,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770974936] [2020-10-15 19:27:21,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:27:22,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770974936] [2020-10-15 19:27:22,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:27:22,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:27:22,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949985468] [2020-10-15 19:27:22,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:27:22,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:22,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:27:22,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:27:22,007 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-10-15 19:27:22,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:22,936 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-10-15 19:27:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:22,937 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 19:27:22,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:22,998 INFO L225 Difference]: With dead ends: 28226 [2020-10-15 19:27:22,999 INFO L226 Difference]: Without dead ends: 28206 [2020-10-15 19:27:22,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:27:23,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-10-15 19:27:23,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-10-15 19:27:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-10-15 19:27:23,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-10-15 19:27:23,407 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-10-15 19:27:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:23,408 INFO L481 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-10-15 19:27:23,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:27:23,408 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-10-15 19:27:23,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:23,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:23,411 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:23,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-15 19:27:23,412 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:23,412 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-10-15 19:27:23,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:23,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530760949] [2020-10-15 19:27:23,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:27:23,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530760949] [2020-10-15 19:27:23,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:27:23,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:27:23,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080595908] [2020-10-15 19:27:23,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:27:23,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:23,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:27:23,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:27:23,487 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-10-15 19:27:24,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:24,347 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-10-15 19:27:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:24,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 19:27:24,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:24,409 INFO L225 Difference]: With dead ends: 27801 [2020-10-15 19:27:24,409 INFO L226 Difference]: Without dead ends: 27781 [2020-10-15 19:27:24,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:27:24,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-10-15 19:27:24,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-10-15 19:27:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-10-15 19:27:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-10-15 19:27:24,784 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-10-15 19:27:24,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:24,785 INFO L481 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-10-15 19:27:24,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:27:24,785 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-10-15 19:27:24,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:24,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:24,788 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:24,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-15 19:27:24,788 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:24,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:24,788 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-10-15 19:27:24,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:24,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909159904] [2020-10-15 19:27:24,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:27:24,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909159904] [2020-10-15 19:27:24,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:27:24,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:27:24,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832104925] [2020-10-15 19:27:24,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:27:24,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:24,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:27:24,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:27:24,869 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-10-15 19:27:25,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:25,768 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-10-15 19:27:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:25,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 19:27:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:25,837 INFO L225 Difference]: With dead ends: 27548 [2020-10-15 19:27:25,837 INFO L226 Difference]: Without dead ends: 27521 [2020-10-15 19:27:25,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:27:25,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-10-15 19:27:26,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-10-15 19:27:26,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-10-15 19:27:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-10-15 19:27:26,434 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-10-15 19:27:26,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:26,435 INFO L481 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-10-15 19:27:26,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:27:26,435 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-10-15 19:27:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:26,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:26,438 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:26,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-15 19:27:26,438 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:26,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:26,438 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-10-15 19:27:26,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:26,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047970810] [2020-10-15 19:27:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:27:26,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047970810] [2020-10-15 19:27:26,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:27:26,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:27:26,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471565644] [2020-10-15 19:27:26,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:27:26,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:26,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:27:26,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:27:26,509 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-10-15 19:27:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:27,378 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-10-15 19:27:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:27,378 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 19:27:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:27,439 INFO L225 Difference]: With dead ends: 27167 [2020-10-15 19:27:27,439 INFO L226 Difference]: Without dead ends: 27147 [2020-10-15 19:27:27,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:27:27,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-10-15 19:27:27,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-10-15 19:27:27,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-10-15 19:27:27,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-10-15 19:27:27,807 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-10-15 19:27:27,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:27,807 INFO L481 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-10-15 19:27:27,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:27:27,807 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-10-15 19:27:27,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:27,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:27,810 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:27,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-15 19:27:27,810 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:27,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:27,811 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-10-15 19:27:27,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:27,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222491728] [2020-10-15 19:27:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:27:27,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222491728] [2020-10-15 19:27:27,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:27:27,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:27:27,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427846494] [2020-10-15 19:27:27,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:27:27,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:27,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:27:27,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:27:27,893 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-10-15 19:27:28,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:28,801 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-10-15 19:27:28,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:28,801 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 19:27:28,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:28,859 INFO L225 Difference]: With dead ends: 26955 [2020-10-15 19:27:28,859 INFO L226 Difference]: Without dead ends: 26928 [2020-10-15 19:27:28,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:27:28,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-10-15 19:27:29,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-10-15 19:27:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-10-15 19:27:29,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-10-15 19:27:29,217 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-10-15 19:27:29,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:29,217 INFO L481 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-10-15 19:27:29,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:27:29,217 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-10-15 19:27:29,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:29,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:29,221 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:29,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-15 19:27:29,221 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:29,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:29,222 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-10-15 19:27:29,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:29,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392877303] [2020-10-15 19:27:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:27:29,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392877303] [2020-10-15 19:27:29,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:27:29,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:27:29,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840586204] [2020-10-15 19:27:29,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:27:29,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:29,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:27:29,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:27:29,290 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-10-15 19:27:30,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:30,294 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-10-15 19:27:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:27:30,294 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 19:27:30,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:30,348 INFO L225 Difference]: With dead ends: 26632 [2020-10-15 19:27:30,349 INFO L226 Difference]: Without dead ends: 26605 [2020-10-15 19:27:30,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:27:30,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-10-15 19:27:30,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-10-15 19:27:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-10-15 19:27:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-10-15 19:27:30,686 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-10-15 19:27:30,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:30,687 INFO L481 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-10-15 19:27:30,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:27:30,687 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-10-15 19:27:30,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:27:30,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:30,689 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:30,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-15 19:27:30,689 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:30,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:30,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-10-15 19:27:30,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:30,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282914507] [2020-10-15 19:27:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:27:30,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282914507] [2020-10-15 19:27:30,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:27:30,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:27:30,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850512259] [2020-10-15 19:27:30,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:27:30,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:30,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:27:30,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:27:30,720 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-10-15 19:27:30,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:30,871 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-10-15 19:27:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:27:30,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-15 19:27:30,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:30,896 INFO L225 Difference]: With dead ends: 11919 [2020-10-15 19:27:30,896 INFO L226 Difference]: Without dead ends: 11887 [2020-10-15 19:27:30,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:27:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-10-15 19:27:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-10-15 19:27:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-15 19:27:31,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-15 19:27:31,117 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-15 19:27:31,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:31,117 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-15 19:27:31,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:27:31,117 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-15 19:27:31,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-15 19:27:31,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:31,120 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:31,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-15 19:27:31,121 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:31,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:31,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-10-15 19:27:31,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:31,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514298075] [2020-10-15 19:27:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:27:31,127 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:27:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:27:31,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:27:31,139 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:27:31,139 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:27:31,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-15 19:27:31,139 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:27:31,140 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:27:31,140 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-15 19:27:31,154 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,154 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,154 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,154 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,155 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,155 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,155 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,155 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,155 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,155 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,155 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,156 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,156 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,157 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,157 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,158 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,158 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,158 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,158 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,158 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,158 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,158 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,158 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,159 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,159 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,159 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,159 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,159 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,159 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,159 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,160 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,160 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,160 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,160 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,160 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,161 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,161 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,161 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,161 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,161 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,161 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,161 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,162 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,162 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,162 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,162 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,162 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,162 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,162 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,162 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,163 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,163 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,163 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,163 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,163 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,163 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,164 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,164 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,164 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,164 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,164 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,164 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,164 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,165 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,165 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,165 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,168 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,168 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,169 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,169 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,169 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,174 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,175 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,182 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,183 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,183 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,185 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:27:31,198 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-15 19:27:31,199 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:27:31,199 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:27:31,199 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:27:31,199 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:27:31,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:27:31,199 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:27:31,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:27:31,199 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:27:31,201 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:27:31,201 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-15 19:27:31,201 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-15 19:27:31,201 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-10-15 19:27:31,222 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-10-15 19:27:31,222 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-15 19:27:31,224 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 173 events. 9/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 284 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 208. Up to 14 conditions per place. [2020-10-15 19:27:31,229 INFO L117 LiptonReduction]: Number of co-enabled transitions 2832 [2020-10-15 19:27:33,250 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-15 19:27:33,566 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-15 19:27:33,706 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-15 19:27:33,718 INFO L132 LiptonReduction]: Checked pairs total: 4694 [2020-10-15 19:27:33,718 INFO L134 LiptonReduction]: Total number of compositions: 121 [2020-10-15 19:27:33,718 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-15 19:27:35,232 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-15 19:27:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-15 19:27:35,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 19:27:35,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:35,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 19:27:35,233 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:35,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:35,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-10-15 19:27:35,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:35,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460951142] [2020-10-15 19:27:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:27:35,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460951142] [2020-10-15 19:27:35,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:27:35,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 19:27:35,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391090836] [2020-10-15 19:27:35,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:27:35,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:35,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:27:35,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:27:35,245 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-15 19:27:35,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:35,381 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-15 19:27:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:27:35,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 19:27:35,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:35,428 INFO L225 Difference]: With dead ends: 17885 [2020-10-15 19:27:35,428 INFO L226 Difference]: Without dead ends: 16791 [2020-10-15 19:27:35,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:27:35,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-15 19:27:36,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-15 19:27:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-15 19:27:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-15 19:27:36,176 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-15 19:27:36,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:36,177 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-15 19:27:36,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:27:36,177 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-15 19:27:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 19:27:36,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:36,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:36,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-15 19:27:36,177 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:36,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:36,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-10-15 19:27:36,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:36,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030452873] [2020-10-15 19:27:36,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:27:36,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030452873] [2020-10-15 19:27:36,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:27:36,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:27:36,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111639621] [2020-10-15 19:27:36,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:27:36,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:36,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:27:36,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:27:36,206 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-15 19:27:36,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:36,467 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-15 19:27:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:27:36,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 19:27:36,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:36,553 INFO L225 Difference]: With dead ends: 30985 [2020-10-15 19:27:36,554 INFO L226 Difference]: Without dead ends: 30977 [2020-10-15 19:27:36,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:27:37,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-15 19:27:37,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-15 19:27:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-15 19:27:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-15 19:27:39,607 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-15 19:27:39,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:39,607 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-15 19:27:39,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:27:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-15 19:27:39,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:27:39,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:39,608 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:39,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-15 19:27:39,608 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:39,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:39,608 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-10-15 19:27:39,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:39,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646356677] [2020-10-15 19:27:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:27:39,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646356677] [2020-10-15 19:27:39,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:27:39,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:27:39,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223027382] [2020-10-15 19:27:39,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:27:39,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:39,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:27:39,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:27:39,636 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-15 19:27:39,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:39,930 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-15 19:27:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:27:39,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 19:27:39,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:40,027 INFO L225 Difference]: With dead ends: 36296 [2020-10-15 19:27:40,027 INFO L226 Difference]: Without dead ends: 36280 [2020-10-15 19:27:40,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:27:40,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-15 19:27:41,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-15 19:27:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-15 19:27:41,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-15 19:27:41,153 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-15 19:27:41,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:41,153 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-15 19:27:41,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:27:41,153 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-15 19:27:41,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 19:27:41,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:41,153 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:41,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-15 19:27:41,154 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:41,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:41,154 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-10-15 19:27:41,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:41,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475129914] [2020-10-15 19:27:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:27:41,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475129914] [2020-10-15 19:27:41,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141336863] [2020-10-15 19:27:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:41,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:27:41,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:27:41,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:41,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:27:41,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524102604] [2020-10-15 19:27:41,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:27:41,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:41,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:27:41,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:27:41,342 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-10-15 19:27:42,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:42,005 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-15 19:27:42,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:27:42,005 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-15 19:27:42,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:42,169 INFO L225 Difference]: With dead ends: 56720 [2020-10-15 19:27:42,169 INFO L226 Difference]: Without dead ends: 56704 [2020-10-15 19:27:42,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:27:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-15 19:27:44,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-15 19:27:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-15 19:27:44,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-15 19:27:44,090 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-15 19:27:44,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:44,090 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-15 19:27:44,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:27:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-15 19:27:44,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 19:27:44,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:44,091 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:44,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-15 19:27:44,292 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:44,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:44,292 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-10-15 19:27:44,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:44,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614669606] [2020-10-15 19:27:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:27:44,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614669606] [2020-10-15 19:27:44,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:27:44,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:27:44,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814699011] [2020-10-15 19:27:44,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:27:44,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:44,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:27:44,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:27:44,333 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-15 19:27:44,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:44,949 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-15 19:27:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:27:44,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-15 19:27:44,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:45,113 INFO L225 Difference]: With dead ends: 58078 [2020-10-15 19:27:45,113 INFO L226 Difference]: Without dead ends: 58061 [2020-10-15 19:27:45,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:27:45,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-15 19:27:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-15 19:27:46,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-15 19:27:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-15 19:27:46,541 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-15 19:27:46,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:46,541 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-15 19:27:46,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:27:46,541 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-15 19:27:46,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 19:27:46,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:46,541 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:46,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-15 19:27:46,542 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:46,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:46,542 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-10-15 19:27:46,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:46,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920247097] [2020-10-15 19:27:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:27:46,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920247097] [2020-10-15 19:27:46,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:27:46,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:27:46,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005434573] [2020-10-15 19:27:46,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:27:46,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:46,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:27:46,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:27:46,584 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-15 19:27:46,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:46,919 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-15 19:27:46,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:27:46,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-15 19:27:46,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:47,047 INFO L225 Difference]: With dead ends: 41885 [2020-10-15 19:27:47,048 INFO L226 Difference]: Without dead ends: 41856 [2020-10-15 19:27:47,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:27:47,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-15 19:27:48,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-15 19:27:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-15 19:27:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-15 19:27:48,978 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-15 19:27:48,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:48,978 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-15 19:27:48,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:27:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-15 19:27:48,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:27:48,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:48,979 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:48,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-15 19:27:48,980 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:48,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:48,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-10-15 19:27:48,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:48,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854068394] [2020-10-15 19:27:48,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:27:49,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854068394] [2020-10-15 19:27:49,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982898122] [2020-10-15 19:27:49,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:49,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:27:49,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:49,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:27:49,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:49,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:27:49,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088957448] [2020-10-15 19:27:49,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:27:49,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:49,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:27:49,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:27:49,170 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-10-15 19:27:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:49,805 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-15 19:27:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:27:49,806 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 19:27:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:50,024 INFO L225 Difference]: With dead ends: 66831 [2020-10-15 19:27:50,024 INFO L226 Difference]: Without dead ends: 66807 [2020-10-15 19:27:50,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:27:50,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-15 19:27:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-15 19:27:51,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-15 19:27:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-15 19:27:51,648 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-15 19:27:51,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:51,649 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-15 19:27:51,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:27:51,649 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-15 19:27:51,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:27:51,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:51,650 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:51,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-15 19:27:51,850 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:51,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:51,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-10-15 19:27:51,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:51,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923915052] [2020-10-15 19:27:51,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:27:51,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923915052] [2020-10-15 19:27:51,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405494825] [2020-10-15 19:27:51,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:51,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:27:51,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:27:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:27:52,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:27:52,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:27:52,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299265124] [2020-10-15 19:27:52,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:27:52,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:52,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:27:52,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:27:52,042 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-10-15 19:27:52,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:52,750 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-10-15 19:27:52,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:27:52,750 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 19:27:52,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:52,950 INFO L225 Difference]: With dead ends: 69484 [2020-10-15 19:27:52,950 INFO L226 Difference]: Without dead ends: 69451 [2020-10-15 19:27:52,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:27:56,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-15 19:27:57,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-10-15 19:27:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-10-15 19:27:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-10-15 19:27:57,660 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-10-15 19:27:57,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:27:57,661 INFO L481 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-10-15 19:27:57,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:27:57,661 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-10-15 19:27:57,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:27:57,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:27:57,662 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:27:57,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:27:57,862 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:27:57,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:27:57,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-10-15 19:27:57,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:27:57,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991788783] [2020-10-15 19:27:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:27:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:27:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:27:57,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991788783] [2020-10-15 19:27:57,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:27:57,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:27:57,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503693161] [2020-10-15 19:27:57,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:27:57,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:27:57,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:27:57,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:27:57,908 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-10-15 19:27:58,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:27:58,590 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-10-15 19:27:58,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:27:58,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 19:27:58,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:27:58,820 INFO L225 Difference]: With dead ends: 70510 [2020-10-15 19:27:58,820 INFO L226 Difference]: Without dead ends: 70477 [2020-10-15 19:27:58,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:27:59,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-10-15 19:28:00,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-10-15 19:28:00,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-10-15 19:28:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-10-15 19:28:00,534 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-10-15 19:28:00,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:00,534 INFO L481 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-10-15 19:28:00,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:28:00,535 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-10-15 19:28:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 19:28:00,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:00,535 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:00,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-15 19:28:00,536 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:00,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:00,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-10-15 19:28:00,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:00,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214585010] [2020-10-15 19:28:00,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:28:00,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214585010] [2020-10-15 19:28:00,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:28:00,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:28:00,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066508550] [2020-10-15 19:28:00,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:28:00,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:00,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:28:00,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:28:00,582 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-10-15 19:28:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:01,854 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-15 19:28:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:28:01,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 19:28:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:02,053 INFO L225 Difference]: With dead ends: 70096 [2020-10-15 19:28:02,053 INFO L226 Difference]: Without dead ends: 70063 [2020-10-15 19:28:02,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:28:02,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-15 19:28:03,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-15 19:28:03,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-15 19:28:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-15 19:28:03,734 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-15 19:28:03,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:03,734 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-15 19:28:03,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:28:03,734 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-15 19:28:03,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:28:03,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:03,735 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:03,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-15 19:28:03,736 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:03,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:03,736 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-10-15 19:28:03,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:03,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99585105] [2020-10-15 19:28:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:03,797 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:28:03,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99585105] [2020-10-15 19:28:03,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715747193] [2020-10-15 19:28:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:28:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:03,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:28:03,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:28:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:28:03,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:28:03,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:28:03,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66873730] [2020-10-15 19:28:03,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:28:03,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:03,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:28:03,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:28:03,994 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-10-15 19:28:05,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:05,380 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-15 19:28:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:28:05,380 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 19:28:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:05,654 INFO L225 Difference]: With dead ends: 100731 [2020-10-15 19:28:05,654 INFO L226 Difference]: Without dead ends: 100715 [2020-10-15 19:28:05,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:28:06,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-15 19:28:08,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-10-15 19:28:08,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-10-15 19:28:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-10-15 19:28:08,563 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-10-15 19:28:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:08,563 INFO L481 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-10-15 19:28:08,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:28:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-10-15 19:28:08,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:28:08,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:08,564 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:08,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-10-15 19:28:08,765 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:08,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:08,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-10-15 19:28:08,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:08,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455896630] [2020-10-15 19:28:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:28:08,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455896630] [2020-10-15 19:28:08,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453352845] [2020-10-15 19:28:08,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:28:08,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:28:08,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:28:08,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:28:08,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:28:09,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:28:09,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:28:09,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:28:09,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165999580] [2020-10-15 19:28:09,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:28:09,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:09,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:28:09,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:28:09,025 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-10-15 19:28:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:10,499 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-10-15 19:28:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:28:10,499 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 19:28:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:10,764 INFO L225 Difference]: With dead ends: 99876 [2020-10-15 19:28:10,764 INFO L226 Difference]: Without dead ends: 99855 [2020-10-15 19:28:10,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:28:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-10-15 19:28:12,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-10-15 19:28:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-15 19:28:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-15 19:28:12,948 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-15 19:28:12,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:12,948 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-15 19:28:12,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:28:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-15 19:28:12,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:28:12,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:12,949 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:13,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:28:13,150 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:13,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:13,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-10-15 19:28:13,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:13,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582834033] [2020-10-15 19:28:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:28:13,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582834033] [2020-10-15 19:28:13,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879963032] [2020-10-15 19:28:13,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:28:13,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:28:13,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:28:13,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:28:13,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:28:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:28:13,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:28:13,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:28:13,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540281870] [2020-10-15 19:28:13,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:28:13,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:13,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:28:13,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:28:13,405 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-10-15 19:28:15,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:15,125 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-10-15 19:28:15,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:28:15,126 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 19:28:15,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:15,411 INFO L225 Difference]: With dead ends: 100071 [2020-10-15 19:28:15,412 INFO L226 Difference]: Without dead ends: 100055 [2020-10-15 19:28:15,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:28:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-10-15 19:28:17,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-10-15 19:28:17,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-15 19:28:17,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-10-15 19:28:17,555 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-10-15 19:28:17,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:17,555 INFO L481 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-10-15 19:28:17,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:28:17,555 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-10-15 19:28:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:28:17,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:17,556 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:17,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-15 19:28:17,757 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:17,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:17,757 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-10-15 19:28:17,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:17,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612645751] [2020-10-15 19:28:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:28:17,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612645751] [2020-10-15 19:28:17,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917584435] [2020-10-15 19:28:17,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:28:17,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:28:17,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:28:17,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:28:17,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:28:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:28:18,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:28:18,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:28:18,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358394153] [2020-10-15 19:28:18,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:28:18,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:18,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:28:18,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:28:18,015 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-10-15 19:28:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:19,378 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-10-15 19:28:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:28:19,378 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 19:28:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:19,687 INFO L225 Difference]: With dead ends: 99523 [2020-10-15 19:28:19,687 INFO L226 Difference]: Without dead ends: 99502 [2020-10-15 19:28:19,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:28:21,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-10-15 19:28:22,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-10-15 19:28:22,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-10-15 19:28:22,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-10-15 19:28:22,281 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-10-15 19:28:22,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:22,281 INFO L481 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-10-15 19:28:22,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:28:22,281 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-10-15 19:28:22,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:28:22,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:22,282 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:22,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-15 19:28:22,483 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:22,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:22,483 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-10-15 19:28:22,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:22,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201413473] [2020-10-15 19:28:22,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:28:22,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201413473] [2020-10-15 19:28:22,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:28:22,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:28:22,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826284789] [2020-10-15 19:28:22,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:28:22,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:22,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:28:22,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:28:22,546 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-10-15 19:28:23,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:23,948 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-10-15 19:28:23,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:28:23,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 19:28:23,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:24,217 INFO L225 Difference]: With dead ends: 99710 [2020-10-15 19:28:24,218 INFO L226 Difference]: Without dead ends: 99694 [2020-10-15 19:28:24,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:28:25,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-10-15 19:28:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-10-15 19:28:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-10-15 19:28:26,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-10-15 19:28:26,337 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-10-15 19:28:26,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:26,337 INFO L481 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-10-15 19:28:26,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:28:26,337 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-10-15 19:28:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:28:26,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:26,338 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:26,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-15 19:28:26,338 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:26,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:26,339 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-10-15 19:28:26,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:26,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714831014] [2020-10-15 19:28:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:28:26,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714831014] [2020-10-15 19:28:26,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:28:26,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:28:26,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317572206] [2020-10-15 19:28:26,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:28:26,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:26,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:28:26,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:28:26,399 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-10-15 19:28:27,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:27,731 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-10-15 19:28:27,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:28:27,731 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 19:28:27,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:28,019 INFO L225 Difference]: With dead ends: 98863 [2020-10-15 19:28:28,019 INFO L226 Difference]: Without dead ends: 98841 [2020-10-15 19:28:28,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:28:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-10-15 19:28:30,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-10-15 19:28:30,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-10-15 19:28:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-10-15 19:28:30,537 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-10-15 19:28:30,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:30,537 INFO L481 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-10-15 19:28:30,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:28:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-10-15 19:28:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 19:28:30,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:30,538 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:30,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-15 19:28:30,539 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:30,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:30,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-10-15 19:28:30,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:30,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972390920] [2020-10-15 19:28:30,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:28:30,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972390920] [2020-10-15 19:28:30,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:28:30,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:28:30,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233076101] [2020-10-15 19:28:30,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:28:30,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:30,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:28:30,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:28:30,566 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-10-15 19:28:30,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:30,919 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-10-15 19:28:30,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:28:30,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-15 19:28:30,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:31,057 INFO L225 Difference]: With dead ends: 46463 [2020-10-15 19:28:31,057 INFO L226 Difference]: Without dead ends: 46417 [2020-10-15 19:28:31,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:28:31,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-10-15 19:28:32,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-10-15 19:28:32,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-15 19:28:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-15 19:28:32,425 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-15 19:28:32,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:32,426 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-15 19:28:32,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:28:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-15 19:28:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:28:32,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:32,427 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:32,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-15 19:28:32,427 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:32,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:32,428 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-10-15 19:28:32,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:32,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497320123] [2020-10-15 19:28:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:28:32,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497320123] [2020-10-15 19:28:32,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040902657] [2020-10-15 19:28:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:28:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:32,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:28:32,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:28:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:28:32,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:28:32,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:28:32,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017647100] [2020-10-15 19:28:32,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:28:32,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:32,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:28:32,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:28:32,616 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-10-15 19:28:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:33,426 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-15 19:28:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:28:33,426 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 19:28:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:33,651 INFO L225 Difference]: With dead ends: 75380 [2020-10-15 19:28:33,651 INFO L226 Difference]: Without dead ends: 75344 [2020-10-15 19:28:33,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:28:34,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-15 19:28:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-15 19:28:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-15 19:28:36,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-15 19:28:36,037 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-15 19:28:36,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:36,037 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-15 19:28:36,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:28:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-15 19:28:36,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:28:36,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:36,039 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:36,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:28:36,240 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:36,240 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-10-15 19:28:36,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:36,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032027362] [2020-10-15 19:28:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:28:36,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032027362] [2020-10-15 19:28:36,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634031406] [2020-10-15 19:28:36,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:28:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:36,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:28:36,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:28:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:28:36,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:28:36,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:28:36,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697182353] [2020-10-15 19:28:36,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:28:36,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:36,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:28:36,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:28:36,445 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-10-15 19:28:37,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:37,178 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-10-15 19:28:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:28:37,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 19:28:37,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:37,414 INFO L225 Difference]: With dead ends: 79487 [2020-10-15 19:28:37,414 INFO L226 Difference]: Without dead ends: 79445 [2020-10-15 19:28:37,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:28:38,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-10-15 19:28:39,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-10-15 19:28:39,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-10-15 19:28:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-10-15 19:28:39,372 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-10-15 19:28:39,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:39,372 INFO L481 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-10-15 19:28:39,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:28:39,372 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-10-15 19:28:39,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:28:39,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:39,376 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:39,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:28:39,590 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:39,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-10-15 19:28:39,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:39,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024061746] [2020-10-15 19:28:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:28:39,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024061746] [2020-10-15 19:28:39,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34206997] [2020-10-15 19:28:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:28:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:39,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:28:39,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:28:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:28:39,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:28:39,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:28:39,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393706173] [2020-10-15 19:28:39,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:28:39,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:39,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:28:39,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:28:39,788 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-10-15 19:28:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:40,572 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-10-15 19:28:40,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:28:40,573 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 19:28:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:40,811 INFO L225 Difference]: With dead ends: 82728 [2020-10-15 19:28:40,811 INFO L226 Difference]: Without dead ends: 82673 [2020-10-15 19:28:40,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:28:41,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-10-15 19:28:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-10-15 19:28:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-10-15 19:28:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-10-15 19:28:42,803 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-10-15 19:28:42,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:42,803 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-10-15 19:28:42,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:28:42,803 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-10-15 19:28:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:28:42,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:42,805 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:43,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:28:43,006 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:43,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:43,006 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-10-15 19:28:43,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:43,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223529911] [2020-10-15 19:28:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:28:43,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223529911] [2020-10-15 19:28:43,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:28:43,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:28:43,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674973355] [2020-10-15 19:28:43,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:28:43,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:43,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:28:43,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:28:43,053 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-10-15 19:28:44,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:44,017 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-10-15 19:28:44,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:28:44,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 19:28:44,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:44,277 INFO L225 Difference]: With dead ends: 83507 [2020-10-15 19:28:44,277 INFO L226 Difference]: Without dead ends: 83452 [2020-10-15 19:28:44,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:28:45,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-10-15 19:28:46,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-10-15 19:28:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-10-15 19:28:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-10-15 19:28:46,272 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-10-15 19:28:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:46,272 INFO L481 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-10-15 19:28:46,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:28:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-10-15 19:28:46,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:28:46,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:46,274 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:46,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-15 19:28:46,274 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:46,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:46,275 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-10-15 19:28:46,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:46,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592698755] [2020-10-15 19:28:46,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:28:46,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592698755] [2020-10-15 19:28:46,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:28:46,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:28:46,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400869625] [2020-10-15 19:28:46,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:28:46,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:46,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:28:46,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:28:46,318 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-10-15 19:28:47,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:47,122 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-10-15 19:28:47,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:28:47,122 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 19:28:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:47,368 INFO L225 Difference]: With dead ends: 83523 [2020-10-15 19:28:47,368 INFO L226 Difference]: Without dead ends: 83468 [2020-10-15 19:28:47,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:28:48,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-10-15 19:28:49,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-10-15 19:28:49,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-10-15 19:28:49,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-10-15 19:28:49,386 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-10-15 19:28:49,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:49,386 INFO L481 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-10-15 19:28:49,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:28:49,386 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-10-15 19:28:49,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 19:28:49,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:49,388 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:49,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-15 19:28:49,388 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:49,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:49,388 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-10-15 19:28:49,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:49,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700634011] [2020-10-15 19:28:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:28:49,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700634011] [2020-10-15 19:28:49,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:28:49,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:28:49,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601344991] [2020-10-15 19:28:49,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:28:49,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:49,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:28:49,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:28:49,434 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-10-15 19:28:50,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:50,205 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-10-15 19:28:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:28:50,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 19:28:50,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:50,476 INFO L225 Difference]: With dead ends: 83918 [2020-10-15 19:28:50,476 INFO L226 Difference]: Without dead ends: 83863 [2020-10-15 19:28:50,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:28:51,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-10-15 19:28:52,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-10-15 19:28:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-15 19:28:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-15 19:28:52,994 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-15 19:28:52,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:52,995 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-15 19:28:52,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:28:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-15 19:28:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:28:52,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:52,998 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:52,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-15 19:28:52,998 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:52,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-10-15 19:28:52,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:52,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100981321] [2020-10-15 19:28:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:28:53,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100981321] [2020-10-15 19:28:53,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883159906] [2020-10-15 19:28:53,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:28:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:53,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:28:53,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:28:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:28:53,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:28:53,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:28:53,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106258573] [2020-10-15 19:28:53,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:28:53,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:53,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:28:53,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:28:53,250 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-10-15 19:28:54,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:28:54,995 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-15 19:28:54,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:28:54,996 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:28:54,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:28:55,358 INFO L225 Difference]: With dead ends: 122892 [2020-10-15 19:28:55,359 INFO L226 Difference]: Without dead ends: 122862 [2020-10-15 19:28:55,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:28:56,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-15 19:28:57,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-10-15 19:28:57,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-10-15 19:28:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-10-15 19:28:58,027 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-10-15 19:28:58,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:28:58,027 INFO L481 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-10-15 19:28:58,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:28:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-10-15 19:28:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:28:58,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:28:58,030 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:28:58,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-15 19:28:58,231 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:28:58,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:28:58,231 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-10-15 19:28:58,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:28:58,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767412861] [2020-10-15 19:28:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:28:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:28:58,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767412861] [2020-10-15 19:28:58,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066969838] [2020-10-15 19:28:58,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:28:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:28:58,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:28:58,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:28:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:28:58,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:28:58,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:28:58,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406029172] [2020-10-15 19:28:58,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:28:58,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:28:58,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:28:58,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:28:58,493 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-10-15 19:29:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:29:00,252 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-10-15 19:29:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:29:00,252 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:29:00,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:29:00,633 INFO L225 Difference]: With dead ends: 121590 [2020-10-15 19:29:00,634 INFO L226 Difference]: Without dead ends: 121560 [2020-10-15 19:29:00,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:29:02,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-10-15 19:29:03,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-10-15 19:29:03,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-10-15 19:29:03,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-10-15 19:29:03,781 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-10-15 19:29:03,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:29:03,782 INFO L481 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-10-15 19:29:03,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:29:03,782 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-10-15 19:29:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:29:03,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:29:03,785 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:29:03,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:29:03,993 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:29:03,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:29:03,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-10-15 19:29:03,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:29:03,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146102577] [2020-10-15 19:29:03,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:29:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:29:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:29:04,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146102577] [2020-10-15 19:29:04,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124983215] [2020-10-15 19:29:04,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:29:04,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:29:04,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:29:04,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:29:04,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:29:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:29:04,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:29:04,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:29:04,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445693823] [2020-10-15 19:29:04,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:29:04,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:29:04,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:29:04,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:29:04,255 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-10-15 19:29:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:29:05,796 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-10-15 19:29:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:29:05,797 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:29:05,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:29:06,128 INFO L225 Difference]: With dead ends: 120395 [2020-10-15 19:29:06,128 INFO L226 Difference]: Without dead ends: 120362 [2020-10-15 19:29:06,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:29:07,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-10-15 19:29:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-10-15 19:29:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-10-15 19:29:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-10-15 19:29:08,745 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-10-15 19:29:08,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:29:08,746 INFO L481 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-10-15 19:29:08,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:29:08,746 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-10-15 19:29:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:29:08,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:29:08,749 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:29:08,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-15 19:29:08,950 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:29:08,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:29:08,950 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-10-15 19:29:08,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:29:08,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548553795] [2020-10-15 19:29:08,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:29:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:29:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:29:09,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548553795] [2020-10-15 19:29:09,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639704523] [2020-10-15 19:29:09,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:29:09,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:29:09,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:29:09,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:29:09,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:29:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:29:09,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:29:09,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:29:09,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142639339] [2020-10-15 19:29:09,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:29:09,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:29:09,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:29:09,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:29:09,200 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-10-15 19:29:11,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:29:11,303 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-10-15 19:29:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:29:11,304 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:29:11,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:29:11,636 INFO L225 Difference]: With dead ends: 119346 [2020-10-15 19:29:11,636 INFO L226 Difference]: Without dead ends: 119313 [2020-10-15 19:29:11,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:29:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-10-15 19:29:14,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-10-15 19:29:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-15 19:29:14,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-15 19:29:14,170 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-15 19:29:14,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:29:14,170 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-15 19:29:14,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:29:14,170 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-15 19:29:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:29:14,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:29:14,173 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:29:14,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-15 19:29:14,374 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:29:14,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:29:14,374 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-10-15 19:29:14,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:29:14,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997115924] [2020-10-15 19:29:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:29:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:29:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:29:14,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997115924] [2020-10-15 19:29:14,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70170023] [2020-10-15 19:29:14,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:29:14,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 19:29:14,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:29:14,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:29:14,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:29:14,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:29:14,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:29:14,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:29:14,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892845345] [2020-10-15 19:29:14,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:29:14,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:29:14,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:29:14,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:29:14,653 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-10-15 19:29:16,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:29:16,364 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-10-15 19:29:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:29:16,364 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:29:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:29:16,709 INFO L225 Difference]: With dead ends: 119770 [2020-10-15 19:29:16,709 INFO L226 Difference]: Without dead ends: 119740 [2020-10-15 19:29:16,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:29:17,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-10-15 19:29:19,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-10-15 19:29:19,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-10-15 19:29:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-10-15 19:29:19,329 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-10-15 19:29:19,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:29:19,329 INFO L481 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-10-15 19:29:19,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:29:19,330 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-10-15 19:29:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:29:19,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:29:19,332 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:29:19,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-15 19:29:19,533 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:29:19,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:29:19,533 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-10-15 19:29:19,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:29:19,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589088259] [2020-10-15 19:29:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:29:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:29:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:29:19,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589088259] [2020-10-15 19:29:19,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360220402] [2020-10-15 19:29:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:29:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:29:19,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:29:19,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:29:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:29:19,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:29:19,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:29:19,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039035185] [2020-10-15 19:29:19,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:29:19,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:29:19,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:29:19,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:29:19,821 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-10-15 19:29:21,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:29:21,665 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-10-15 19:29:21,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:29:21,665 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:29:21,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:29:22,036 INFO L225 Difference]: With dead ends: 121131 [2020-10-15 19:29:22,037 INFO L226 Difference]: Without dead ends: 121101 [2020-10-15 19:29:22,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:29:23,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-10-15 19:29:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-10-15 19:29:24,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-10-15 19:29:24,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-10-15 19:29:24,619 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-10-15 19:29:24,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:29:24,619 INFO L481 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-10-15 19:29:24,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:29:24,619 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-10-15 19:29:24,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:29:24,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:29:24,622 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:29:24,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-15 19:29:24,822 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:29:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:29:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-10-15 19:29:24,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:29:24,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764444350] [2020-10-15 19:29:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:29:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:29:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:29:24,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764444350] [2020-10-15 19:29:24,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382656639] [2020-10-15 19:29:24,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:29:24,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:29:24,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:29:24,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:29:24,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:29:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:29:25,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:29:25,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:29:25,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729736055] [2020-10-15 19:29:25,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:29:25,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:29:25,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:29:25,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:29:25,082 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-10-15 19:29:26,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:29:26,700 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-10-15 19:29:26,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:29:26,701 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:29:26,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:29:27,047 INFO L225 Difference]: With dead ends: 120194 [2020-10-15 19:29:27,047 INFO L226 Difference]: Without dead ends: 120154 [2020-10-15 19:29:27,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:29:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-10-15 19:29:29,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-10-15 19:29:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-10-15 19:29:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-10-15 19:29:30,541 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-10-15 19:29:30,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:29:30,542 INFO L481 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-10-15 19:29:30,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:29:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-10-15 19:29:30,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:29:30,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:29:30,544 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:29:30,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:29:30,745 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:29:30,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:29:30,746 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-10-15 19:29:30,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:29:30,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673633575] [2020-10-15 19:29:30,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:29:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:29:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:29:30,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673633575] [2020-10-15 19:29:30,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637717280] [2020-10-15 19:29:30,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:29:30,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:29:30,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:29:30,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:29:30,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:29:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:29:31,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:29:31,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:29:31,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831389526] [2020-10-15 19:29:31,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:29:31,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:29:31,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:29:31,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:29:31,012 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-10-15 19:29:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:29:32,537 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-10-15 19:29:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:29:32,537 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:29:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:29:32,883 INFO L225 Difference]: With dead ends: 118559 [2020-10-15 19:29:32,884 INFO L226 Difference]: Without dead ends: 118526 [2020-10-15 19:29:32,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:29:34,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-10-15 19:29:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118526 to 34815. [2020-10-15 19:29:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-10-15 19:29:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-10-15 19:29:35,404 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-10-15 19:29:35,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:29:35,404 INFO L481 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-10-15 19:29:35,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:29:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-10-15 19:29:35,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:29:35,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:29:35,407 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:29:35,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-15 19:29:35,615 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:29:35,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:29:35,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1056609241, now seen corresponding path program 3 times [2020-10-15 19:29:35,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:29:35,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91385323] [2020-10-15 19:29:35,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:29:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:29:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:29:35,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91385323] [2020-10-15 19:29:35,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960743844] [2020-10-15 19:29:35,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:29:35,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:29:35,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:29:35,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:29:35,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:29:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:29:35,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:29:35,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:29:35,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463284210] [2020-10-15 19:29:35,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:29:35,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:29:35,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:29:35,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:29:35,875 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 16 states. [2020-10-15 19:29:37,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:29:37,523 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-10-15 19:29:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:29:37,524 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:29:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:29:37,881 INFO L225 Difference]: With dead ends: 118955 [2020-10-15 19:29:37,881 INFO L226 Difference]: Without dead ends: 118925 [2020-10-15 19:29:37,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:29:39,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-10-15 19:29:41,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-10-15 19:29:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-10-15 19:29:41,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-10-15 19:29:41,142 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-10-15 19:29:41,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:29:41,142 INFO L481 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-10-15 19:29:41,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:29:41,142 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-10-15 19:29:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:29:41,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:29:41,145 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:29:41,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-15 19:29:41,346 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:29:41,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:29:41,346 INFO L82 PathProgramCache]: Analyzing trace with hash -989383992, now seen corresponding path program 3 times [2020-10-15 19:29:41,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:29:41,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147425624] [2020-10-15 19:29:41,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:29:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:29:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:29:41,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147425624] [2020-10-15 19:29:41,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710623312] [2020-10-15 19:29:41,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:29:41,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:29:41,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:29:41,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:29:41,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:29:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:29:41,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:29:41,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:29:41,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451551118] [2020-10-15 19:29:41,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:29:41,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:29:41,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:29:41,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:29:41,612 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 16 states. [2020-10-15 19:29:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:29:43,348 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-10-15 19:29:43,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:29:43,348 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:29:43,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:29:43,686 INFO L225 Difference]: With dead ends: 117996 [2020-10-15 19:29:43,686 INFO L226 Difference]: Without dead ends: 117966 [2020-10-15 19:29:43,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:29:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-10-15 19:29:46,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117966 to 34024. [2020-10-15 19:29:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34024 states. [2020-10-15 19:29:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 181250 transitions. [2020-10-15 19:29:46,214 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 181250 transitions. Word has length 25 [2020-10-15 19:29:46,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:29:46,214 INFO L481 AbstractCegarLoop]: Abstraction has 34024 states and 181250 transitions. [2020-10-15 19:29:46,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:29:46,215 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 181250 transitions. [2020-10-15 19:29:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:29:46,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:29:46,217 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:29:46,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-15 19:29:46,418 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:29:46,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:29:46,418 INFO L82 PathProgramCache]: Analyzing trace with hash 507575079, now seen corresponding path program 4 times [2020-10-15 19:29:46,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:29:46,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347463988] [2020-10-15 19:29:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:29:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:29:46,486 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:29:46,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347463988] [2020-10-15 19:29:46,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320312798] [2020-10-15 19:29:46,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:29:46,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:29:46,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:29:46,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:29:46,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:29:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:29:46,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:29:46,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:29:46,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723791448] [2020-10-15 19:29:46,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:29:46,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:29:46,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:29:46,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:29:46,688 INFO L87 Difference]: Start difference. First operand 34024 states and 181250 transitions. Second operand 16 states. [2020-10-15 19:29:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:29:48,392 INFO L93 Difference]: Finished difference Result 119076 states and 543105 transitions. [2020-10-15 19:29:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:29:48,392 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:29:48,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:29:48,740 INFO L225 Difference]: With dead ends: 119076 [2020-10-15 19:29:48,740 INFO L226 Difference]: Without dead ends: 119036 [2020-10-15 19:29:48,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:29:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119036 states. [2020-10-15 19:29:51,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119036 to 33873. [2020-10-15 19:29:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33873 states. [2020-10-15 19:29:51,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33873 states to 33873 states and 180354 transitions. [2020-10-15 19:29:51,910 INFO L78 Accepts]: Start accepts. Automaton has 33873 states and 180354 transitions. Word has length 25 [2020-10-15 19:29:51,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:29:51,911 INFO L481 AbstractCegarLoop]: Abstraction has 33873 states and 180354 transitions. [2020-10-15 19:29:51,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:29:51,911 INFO L276 IsEmpty]: Start isEmpty. Operand 33873 states and 180354 transitions. [2020-10-15 19:29:51,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:29:51,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:29:51,913 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:29:52,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-15 19:29:52,114 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:29:52,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:29:52,115 INFO L82 PathProgramCache]: Analyzing trace with hash 507547272, now seen corresponding path program 4 times [2020-10-15 19:29:52,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:29:52,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942616775] [2020-10-15 19:29:52,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:29:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:29:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:29:52,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942616775] [2020-10-15 19:29:52,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119316318] [2020-10-15 19:29:52,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:29:52,284 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:29:52,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:29:52,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:29:52,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:29:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:29:52,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:29:52,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:29:52,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537233418] [2020-10-15 19:29:52,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:29:52,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:29:52,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:29:52,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:29:52,388 INFO L87 Difference]: Start difference. First operand 33873 states and 180354 transitions. Second operand 16 states. [2020-10-15 19:29:53,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:29:53,998 INFO L93 Difference]: Finished difference Result 118020 states and 538147 transitions. [2020-10-15 19:29:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:29:53,999 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:29:53,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:29:54,343 INFO L225 Difference]: With dead ends: 118020 [2020-10-15 19:29:54,343 INFO L226 Difference]: Without dead ends: 117980 [2020-10-15 19:29:54,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:29:55,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117980 states. [2020-10-15 19:29:56,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117980 to 33387. [2020-10-15 19:29:56,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33387 states. [2020-10-15 19:29:56,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33387 states to 33387 states and 177693 transitions. [2020-10-15 19:29:56,827 INFO L78 Accepts]: Start accepts. Automaton has 33387 states and 177693 transitions. Word has length 25 [2020-10-15 19:29:56,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:29:56,827 INFO L481 AbstractCegarLoop]: Abstraction has 33387 states and 177693 transitions. [2020-10-15 19:29:56,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:29:56,827 INFO L276 IsEmpty]: Start isEmpty. Operand 33387 states and 177693 transitions. [2020-10-15 19:29:56,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:29:56,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:29:56,830 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:29:57,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:29:57,030 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:29:57,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:29:57,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1147615783, now seen corresponding path program 5 times [2020-10-15 19:29:57,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:29:57,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58324970] [2020-10-15 19:29:57,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:29:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:29:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:29:57,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58324970] [2020-10-15 19:29:57,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:29:57,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:29:57,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011875671] [2020-10-15 19:29:57,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:29:57,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:29:57,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:29:57,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:29:57,099 INFO L87 Difference]: Start difference. First operand 33387 states and 177693 transitions. Second operand 9 states. [2020-10-15 19:29:58,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:29:58,704 INFO L93 Difference]: Finished difference Result 118363 states and 539792 transitions. [2020-10-15 19:29:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:29:58,705 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 19:29:58,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:29:59,053 INFO L225 Difference]: With dead ends: 118363 [2020-10-15 19:29:59,053 INFO L226 Difference]: Without dead ends: 118333 [2020-10-15 19:29:59,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:30:00,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118333 states. [2020-10-15 19:30:01,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118333 to 32908. [2020-10-15 19:30:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32908 states. [2020-10-15 19:30:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 175152 transitions. [2020-10-15 19:30:02,111 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 175152 transitions. Word has length 25 [2020-10-15 19:30:02,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:30:02,111 INFO L481 AbstractCegarLoop]: Abstraction has 32908 states and 175152 transitions. [2020-10-15 19:30:02,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:30:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 175152 transitions. [2020-10-15 19:30:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:30:02,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:30:02,113 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:30:02,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-10-15 19:30:02,113 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:30:02,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:30:02,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1147599384, now seen corresponding path program 5 times [2020-10-15 19:30:02,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:30:02,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738163624] [2020-10-15 19:30:02,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:30:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:30:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:30:02,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738163624] [2020-10-15 19:30:02,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:30:02,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:30:02,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453519833] [2020-10-15 19:30:02,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:30:02,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:30:02,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:30:02,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:30:02,189 INFO L87 Difference]: Start difference. First operand 32908 states and 175152 transitions. Second operand 9 states. [2020-10-15 19:30:03,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:30:03,719 INFO L93 Difference]: Finished difference Result 117027 states and 533313 transitions. [2020-10-15 19:30:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:30:03,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 19:30:03,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:30:04,064 INFO L225 Difference]: With dead ends: 117027 [2020-10-15 19:30:04,064 INFO L226 Difference]: Without dead ends: 116997 [2020-10-15 19:30:04,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:30:05,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116997 states. [2020-10-15 19:30:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116997 to 32394. [2020-10-15 19:30:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32394 states. [2020-10-15 19:30:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32394 states to 32394 states and 172458 transitions. [2020-10-15 19:30:06,431 INFO L78 Accepts]: Start accepts. Automaton has 32394 states and 172458 transitions. Word has length 25 [2020-10-15 19:30:06,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:30:06,431 INFO L481 AbstractCegarLoop]: Abstraction has 32394 states and 172458 transitions. [2020-10-15 19:30:06,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:30:06,431 INFO L276 IsEmpty]: Start isEmpty. Operand 32394 states and 172458 transitions. [2020-10-15 19:30:06,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:30:06,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:30:06,434 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:30:06,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-10-15 19:30:06,434 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:30:06,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:30:06,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1136664103, now seen corresponding path program 6 times [2020-10-15 19:30:06,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:30:06,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596285625] [2020-10-15 19:30:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:30:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:30:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:30:06,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596285625] [2020-10-15 19:30:06,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:30:06,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:30:06,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455721066] [2020-10-15 19:30:06,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:30:06,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:30:06,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:30:06,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:30:06,501 INFO L87 Difference]: Start difference. First operand 32394 states and 172458 transitions. Second operand 9 states. [2020-10-15 19:30:07,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:30:07,946 INFO L93 Difference]: Finished difference Result 116213 states and 529114 transitions. [2020-10-15 19:30:07,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:30:07,946 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 19:30:07,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:30:08,300 INFO L225 Difference]: With dead ends: 116213 [2020-10-15 19:30:08,300 INFO L226 Difference]: Without dead ends: 116173 [2020-10-15 19:30:08,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:30:09,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116173 states. [2020-10-15 19:30:11,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116173 to 31530. [2020-10-15 19:30:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31530 states. [2020-10-15 19:30:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31530 states to 31530 states and 168028 transitions. [2020-10-15 19:30:11,280 INFO L78 Accepts]: Start accepts. Automaton has 31530 states and 168028 transitions. Word has length 25 [2020-10-15 19:30:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:30:11,281 INFO L481 AbstractCegarLoop]: Abstraction has 31530 states and 168028 transitions. [2020-10-15 19:30:11,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:30:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 31530 states and 168028 transitions. [2020-10-15 19:30:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:30:11,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:30:11,283 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:30:11,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-10-15 19:30:11,283 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:30:11,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:30:11,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1136636296, now seen corresponding path program 5 times [2020-10-15 19:30:11,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:30:11,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913245616] [2020-10-15 19:30:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:30:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:30:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:30:11,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913245616] [2020-10-15 19:30:11,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:30:11,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:30:11,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955006409] [2020-10-15 19:30:11,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:30:11,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:30:11,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:30:11,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:30:11,348 INFO L87 Difference]: Start difference. First operand 31530 states and 168028 transitions. Second operand 9 states. [2020-10-15 19:30:12,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:30:12,946 INFO L93 Difference]: Finished difference Result 115048 states and 523573 transitions. [2020-10-15 19:30:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:30:12,946 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 19:30:12,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:30:13,325 INFO L225 Difference]: With dead ends: 115048 [2020-10-15 19:30:13,325 INFO L226 Difference]: Without dead ends: 115018 [2020-10-15 19:30:13,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:30:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115018 states. [2020-10-15 19:30:15,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115018 to 31199. [2020-10-15 19:30:15,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31199 states. [2020-10-15 19:30:15,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31199 states to 31199 states and 166334 transitions. [2020-10-15 19:30:15,698 INFO L78 Accepts]: Start accepts. Automaton has 31199 states and 166334 transitions. Word has length 25 [2020-10-15 19:30:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:30:15,698 INFO L481 AbstractCegarLoop]: Abstraction has 31199 states and 166334 transitions. [2020-10-15 19:30:15,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:30:15,698 INFO L276 IsEmpty]: Start isEmpty. Operand 31199 states and 166334 transitions. [2020-10-15 19:30:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:30:15,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:30:15,700 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:30:15,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-10-15 19:30:15,700 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:30:15,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:30:15,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1120904664, now seen corresponding path program 6 times [2020-10-15 19:30:15,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:30:15,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329591153] [2020-10-15 19:30:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:30:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:30:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:30:15,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329591153] [2020-10-15 19:30:15,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:30:15,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:30:15,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447048081] [2020-10-15 19:30:15,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:30:15,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:30:15,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:30:15,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:30:15,770 INFO L87 Difference]: Start difference. First operand 31199 states and 166334 transitions. Second operand 9 states. [2020-10-15 19:30:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:30:17,250 INFO L93 Difference]: Finished difference Result 114413 states and 520399 transitions. [2020-10-15 19:30:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:30:17,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 19:30:17,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:30:17,573 INFO L225 Difference]: With dead ends: 114413 [2020-10-15 19:30:17,574 INFO L226 Difference]: Without dead ends: 114373 [2020-10-15 19:30:17,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:30:18,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114373 states. [2020-10-15 19:30:20,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114373 to 30592. [2020-10-15 19:30:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30592 states. [2020-10-15 19:30:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30592 states to 30592 states and 163260 transitions. [2020-10-15 19:30:20,487 INFO L78 Accepts]: Start accepts. Automaton has 30592 states and 163260 transitions. Word has length 25 [2020-10-15 19:30:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:30:20,487 INFO L481 AbstractCegarLoop]: Abstraction has 30592 states and 163260 transitions. [2020-10-15 19:30:20,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:30:20,487 INFO L276 IsEmpty]: Start isEmpty. Operand 30592 states and 163260 transitions. [2020-10-15 19:30:20,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:30:20,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:30:20,489 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:30:20,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-10-15 19:30:20,489 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:30:20,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:30:20,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1120893256, now seen corresponding path program 6 times [2020-10-15 19:30:20,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:30:20,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074814703] [2020-10-15 19:30:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:30:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:30:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:30:20,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074814703] [2020-10-15 19:30:20,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:30:20,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:30:20,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144982429] [2020-10-15 19:30:20,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:30:20,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:30:20,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:30:20,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:30:20,557 INFO L87 Difference]: Start difference. First operand 30592 states and 163260 transitions. Second operand 9 states. [2020-10-15 19:30:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:30:22,025 INFO L93 Difference]: Finished difference Result 113466 states and 515911 transitions. [2020-10-15 19:30:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:30:22,025 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 19:30:22,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:30:22,356 INFO L225 Difference]: With dead ends: 113466 [2020-10-15 19:30:22,356 INFO L226 Difference]: Without dead ends: 113426 [2020-10-15 19:30:22,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:30:23,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113426 states. [2020-10-15 19:30:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113426 to 29802. [2020-10-15 19:30:24,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-10-15 19:30:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 159321 transitions. [2020-10-15 19:30:24,757 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 159321 transitions. Word has length 25 [2020-10-15 19:30:24,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:30:24,757 INFO L481 AbstractCegarLoop]: Abstraction has 29802 states and 159321 transitions. [2020-10-15 19:30:24,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:30:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 159321 transitions. [2020-10-15 19:30:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:30:24,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:30:24,759 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:30:24,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-10-15 19:30:24,760 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:30:24,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:30:24,760 INFO L82 PathProgramCache]: Analyzing trace with hash 123792641, now seen corresponding path program 1 times [2020-10-15 19:30:24,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:30:24,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354348572] [2020-10-15 19:30:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:30:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:30:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:30:24,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354348572] [2020-10-15 19:30:24,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:30:24,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:30:24,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557183114] [2020-10-15 19:30:24,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:30:24,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:30:24,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:30:24,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:30:24,791 INFO L87 Difference]: Start difference. First operand 29802 states and 159321 transitions. Second operand 5 states. [2020-10-15 19:30:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:30:25,203 INFO L93 Difference]: Finished difference Result 53165 states and 272731 transitions. [2020-10-15 19:30:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:30:25,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-15 19:30:25,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:30:25,366 INFO L225 Difference]: With dead ends: 53165 [2020-10-15 19:30:25,366 INFO L226 Difference]: Without dead ends: 53102 [2020-10-15 19:30:25,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:30:26,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53102 states. [2020-10-15 19:30:26,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53102 to 37675. [2020-10-15 19:30:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-10-15 19:30:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-10-15 19:30:26,886 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-10-15 19:30:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:30:26,886 INFO L481 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-10-15 19:30:26,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:30:26,886 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-10-15 19:30:26,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:30:26,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:30:26,889 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:30:26,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-10-15 19:30:26,890 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:30:26,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:30:26,890 INFO L82 PathProgramCache]: Analyzing trace with hash -480284107, now seen corresponding path program 1 times [2020-10-15 19:30:26,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:30:26,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949732573] [2020-10-15 19:30:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:30:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:30:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:30:26,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949732573] [2020-10-15 19:30:26,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426288969] [2020-10-15 19:30:26,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:30:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:30:27,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:30:27,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:30:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:30:27,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:30:27,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:30:27,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742883576] [2020-10-15 19:30:27,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:30:27,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:30:27,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:30:27,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:30:27,239 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 20 states. [2020-10-15 19:30:31,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:30:31,126 INFO L93 Difference]: Finished difference Result 186148 states and 815009 transitions. [2020-10-15 19:30:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:30:31,126 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:30:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:30:31,637 INFO L225 Difference]: With dead ends: 186148 [2020-10-15 19:30:31,637 INFO L226 Difference]: Without dead ends: 186130 [2020-10-15 19:30:31,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1848 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:30:33,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186130 states. [2020-10-15 19:30:35,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186130 to 37780. [2020-10-15 19:30:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37780 states. [2020-10-15 19:30:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37780 states to 37780 states and 201508 transitions. [2020-10-15 19:30:35,445 INFO L78 Accepts]: Start accepts. Automaton has 37780 states and 201508 transitions. Word has length 27 [2020-10-15 19:30:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:30:35,445 INFO L481 AbstractCegarLoop]: Abstraction has 37780 states and 201508 transitions. [2020-10-15 19:30:35,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:30:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 37780 states and 201508 transitions. [2020-10-15 19:30:35,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:30:35,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:30:35,448 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:30:35,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-10-15 19:30:35,649 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:30:35,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:30:35,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1807002315, now seen corresponding path program 2 times [2020-10-15 19:30:35,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:30:35,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992700006] [2020-10-15 19:30:35,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:30:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:30:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:30:35,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992700006] [2020-10-15 19:30:35,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031464862] [2020-10-15 19:30:35,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:30:35,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:30:35,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:30:35,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:30:35,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:30:35,995 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:30:35,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:30:35,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:30:35,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119620436] [2020-10-15 19:30:35,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:30:35,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:30:35,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:30:35,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:30:35,996 INFO L87 Difference]: Start difference. First operand 37780 states and 201508 transitions. Second operand 20 states. [2020-10-15 19:30:40,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:30:40,319 INFO L93 Difference]: Finished difference Result 185731 states and 813247 transitions. [2020-10-15 19:30:40,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:30:40,319 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:30:40,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:30:40,815 INFO L225 Difference]: With dead ends: 185731 [2020-10-15 19:30:40,815 INFO L226 Difference]: Without dead ends: 185707 [2020-10-15 19:30:40,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:30:42,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185707 states. [2020-10-15 19:30:44,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185707 to 37506. [2020-10-15 19:30:44,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37506 states. [2020-10-15 19:30:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 200034 transitions. [2020-10-15 19:30:44,407 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 200034 transitions. Word has length 27 [2020-10-15 19:30:44,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:30:44,407 INFO L481 AbstractCegarLoop]: Abstraction has 37506 states and 200034 transitions. [2020-10-15 19:30:44,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:30:44,407 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 200034 transitions. [2020-10-15 19:30:44,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:30:44,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:30:44,410 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:30:44,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-15 19:30:44,611 INFO L429 AbstractCegarLoop]: === Iteration 45 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:30:44,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:30:44,612 INFO L82 PathProgramCache]: Analyzing trace with hash 2078895349, now seen corresponding path program 3 times [2020-10-15 19:30:44,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:30:44,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235661776] [2020-10-15 19:30:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:30:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:30:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:30:44,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235661776] [2020-10-15 19:30:44,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455031732] [2020-10-15 19:30:44,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:30:44,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:30:44,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:30:44,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:30:44,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:30:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:30:44,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:30:44,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:30:44,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123365471] [2020-10-15 19:30:44,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:30:44,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:30:44,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:30:44,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:30:44,954 INFO L87 Difference]: Start difference. First operand 37506 states and 200034 transitions. Second operand 20 states. [2020-10-15 19:30:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:30:48,523 INFO L93 Difference]: Finished difference Result 185071 states and 810108 transitions. [2020-10-15 19:30:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:30:48,524 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:30:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:30:49,029 INFO L225 Difference]: With dead ends: 185071 [2020-10-15 19:30:49,029 INFO L226 Difference]: Without dead ends: 185053 [2020-10-15 19:30:49,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1842 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:30:51,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185053 states. [2020-10-15 19:30:53,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185053 to 37607. [2020-10-15 19:30:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37607 states. [2020-10-15 19:30:53,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37607 states to 37607 states and 200519 transitions. [2020-10-15 19:30:53,339 INFO L78 Accepts]: Start accepts. Automaton has 37607 states and 200519 transitions. Word has length 27 [2020-10-15 19:30:53,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:30:53,340 INFO L481 AbstractCegarLoop]: Abstraction has 37607 states and 200519 transitions. [2020-10-15 19:30:53,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:30:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 37607 states and 200519 transitions. [2020-10-15 19:30:53,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:30:53,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:30:53,343 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:30:53,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:30:53,544 INFO L429 AbstractCegarLoop]: === Iteration 46 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:30:53,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:30:53,544 INFO L82 PathProgramCache]: Analyzing trace with hash -651887627, now seen corresponding path program 4 times [2020-10-15 19:30:53,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:30:53,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640894724] [2020-10-15 19:30:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:30:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:30:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:30:53,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640894724] [2020-10-15 19:30:53,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201851858] [2020-10-15 19:30:53,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:30:53,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:30:53,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:30:53,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:30:53,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:30:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 19:30:53,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:30:53,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:30:53,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011859204] [2020-10-15 19:30:53,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:30:53,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:30:53,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:30:53,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:30:53,891 INFO L87 Difference]: Start difference. First operand 37607 states and 200519 transitions. Second operand 20 states. [2020-10-15 19:30:57,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:30:57,509 INFO L93 Difference]: Finished difference Result 184772 states and 808751 transitions. [2020-10-15 19:30:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:30:57,509 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:30:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:30:58,025 INFO L225 Difference]: With dead ends: 184772 [2020-10-15 19:30:58,025 INFO L226 Difference]: Without dead ends: 184748 [2020-10-15 19:30:58,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:30:59,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184748 states. [2020-10-15 19:31:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184748 to 37341. [2020-10-15 19:31:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37341 states. [2020-10-15 19:31:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37341 states to 37341 states and 199065 transitions. [2020-10-15 19:31:02,508 INFO L78 Accepts]: Start accepts. Automaton has 37341 states and 199065 transitions. Word has length 27 [2020-10-15 19:31:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:31:02,509 INFO L481 AbstractCegarLoop]: Abstraction has 37341 states and 199065 transitions. [2020-10-15 19:31:02,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:31:02,509 INFO L276 IsEmpty]: Start isEmpty. Operand 37341 states and 199065 transitions. [2020-10-15 19:31:02,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:31:02,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:31:02,512 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:31:02,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:31:02,713 INFO L429 AbstractCegarLoop]: === Iteration 47 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:31:02,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:31:02,713 INFO L82 PathProgramCache]: Analyzing trace with hash -11846923, now seen corresponding path program 5 times [2020-10-15 19:31:02,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:31:02,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730663162] [2020-10-15 19:31:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:31:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:31:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:31:02,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730663162] [2020-10-15 19:31:02,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570169333] [2020-10-15 19:31:02,808 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:31:02,916 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-15 19:31:02,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:31:02,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:31:02,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:31:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:31:03,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:31:03,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:31:03,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589352047] [2020-10-15 19:31:03,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:31:03,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:31:03,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:31:03,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:31:03,096 INFO L87 Difference]: Start difference. First operand 37341 states and 199065 transitions. Second operand 20 states. [2020-10-15 19:31:06,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:31:06,727 INFO L93 Difference]: Finished difference Result 184120 states and 805632 transitions. [2020-10-15 19:31:06,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:31:06,728 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:31:06,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:31:07,291 INFO L225 Difference]: With dead ends: 184120 [2020-10-15 19:31:07,291 INFO L226 Difference]: Without dead ends: 184102 [2020-10-15 19:31:07,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1835 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:31:08,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184102 states. [2020-10-15 19:31:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184102 to 37438. [2020-10-15 19:31:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37438 states. [2020-10-15 19:31:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37438 states to 37438 states and 199538 transitions. [2020-10-15 19:31:12,185 INFO L78 Accepts]: Start accepts. Automaton has 37438 states and 199538 transitions. Word has length 27 [2020-10-15 19:31:12,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:31:12,185 INFO L481 AbstractCegarLoop]: Abstraction has 37438 states and 199538 transitions. [2020-10-15 19:31:12,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:31:12,185 INFO L276 IsEmpty]: Start isEmpty. Operand 37438 states and 199538 transitions. [2020-10-15 19:31:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:31:12,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:31:12,189 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:31:12,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:31:12,390 INFO L429 AbstractCegarLoop]: === Iteration 48 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:31:12,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:31:12,390 INFO L82 PathProgramCache]: Analyzing trace with hash -22798603, now seen corresponding path program 6 times [2020-10-15 19:31:12,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:31:12,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788733951] [2020-10-15 19:31:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:31:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:31:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:31:12,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788733951] [2020-10-15 19:31:12,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868935473] [2020-10-15 19:31:12,488 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:31:12,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-15 19:31:12,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:31:12,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:31:12,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:31:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:31:12,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:31:12,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:31:12,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514244599] [2020-10-15 19:31:12,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:31:12,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:31:12,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:31:12,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:31:12,754 INFO L87 Difference]: Start difference. First operand 37438 states and 199538 transitions. Second operand 20 states. [2020-10-15 19:31:16,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:31:16,374 INFO L93 Difference]: Finished difference Result 183711 states and 803890 transitions. [2020-10-15 19:31:16,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:31:16,375 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:31:16,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:31:16,876 INFO L225 Difference]: With dead ends: 183711 [2020-10-15 19:31:16,876 INFO L226 Difference]: Without dead ends: 183683 [2020-10-15 19:31:16,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:31:18,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183683 states. [2020-10-15 19:31:20,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183683 to 37176. [2020-10-15 19:31:20,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37176 states. [2020-10-15 19:31:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37176 states to 37176 states and 198103 transitions. [2020-10-15 19:31:20,504 INFO L78 Accepts]: Start accepts. Automaton has 37176 states and 198103 transitions. Word has length 27 [2020-10-15 19:31:20,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:31:20,504 INFO L481 AbstractCegarLoop]: Abstraction has 37176 states and 198103 transitions. [2020-10-15 19:31:20,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:31:20,504 INFO L276 IsEmpty]: Start isEmpty. Operand 37176 states and 198103 transitions. [2020-10-15 19:31:20,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:31:20,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:31:20,507 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:31:20,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-15 19:31:20,714 INFO L429 AbstractCegarLoop]: === Iteration 49 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:31:20,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:31:20,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1035670065, now seen corresponding path program 1 times [2020-10-15 19:31:20,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:31:20,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156813192] [2020-10-15 19:31:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:31:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:31:20,761 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 19:31:20,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156813192] [2020-10-15 19:31:20,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803853580] [2020-10-15 19:31:20,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:31:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:31:20,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:31:20,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:31:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 19:31:20,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:31:20,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:31:20,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546764352] [2020-10-15 19:31:20,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:31:20,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:31:20,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:31:20,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:31:20,922 INFO L87 Difference]: Start difference. First operand 37176 states and 198103 transitions. Second operand 12 states. [2020-10-15 19:31:22,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:31:22,235 INFO L93 Difference]: Finished difference Result 82213 states and 399726 transitions. [2020-10-15 19:31:22,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:31:22,236 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-15 19:31:22,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:31:22,474 INFO L225 Difference]: With dead ends: 82213 [2020-10-15 19:31:22,474 INFO L226 Difference]: Without dead ends: 82165 [2020-10-15 19:31:22,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:31:23,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-10-15 19:31:24,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 38439. [2020-10-15 19:31:24,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-10-15 19:31:24,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-10-15 19:31:24,407 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-10-15 19:31:24,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:31:24,407 INFO L481 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-10-15 19:31:24,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:31:24,407 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-10-15 19:31:24,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:31:24,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:31:24,411 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:31:24,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-10-15 19:31:24,612 INFO L429 AbstractCegarLoop]: === Iteration 50 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:31:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:31:24,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1753210507, now seen corresponding path program 7 times [2020-10-15 19:31:24,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:31:24,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928322338] [2020-10-15 19:31:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:31:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:31:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:31:24,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928322338] [2020-10-15 19:31:24,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985613809] [2020-10-15 19:31:24,709 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:31:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:31:24,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:31:24,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:31:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:31:24,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:31:24,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:31:24,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678901650] [2020-10-15 19:31:24,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:31:24,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:31:24,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:31:24,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:31:24,969 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 20 states. [2020-10-15 19:31:28,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:31:28,421 INFO L93 Difference]: Finished difference Result 183266 states and 800955 transitions. [2020-10-15 19:31:28,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:31:28,422 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:31:28,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:31:28,910 INFO L225 Difference]: With dead ends: 183266 [2020-10-15 19:31:28,910 INFO L226 Difference]: Without dead ends: 183248 [2020-10-15 19:31:28,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:31:30,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2020-10-15 19:31:33,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 38274. [2020-10-15 19:31:33,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38274 states. [2020-10-15 19:31:33,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38274 states to 38274 states and 203647 transitions. [2020-10-15 19:31:33,421 INFO L78 Accepts]: Start accepts. Automaton has 38274 states and 203647 transitions. Word has length 27 [2020-10-15 19:31:33,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:31:33,421 INFO L481 AbstractCegarLoop]: Abstraction has 38274 states and 203647 transitions. [2020-10-15 19:31:33,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:31:33,422 INFO L276 IsEmpty]: Start isEmpty. Operand 38274 states and 203647 transitions. [2020-10-15 19:31:33,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:31:33,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:31:33,425 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:31:33,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-15 19:31:33,626 INFO L429 AbstractCegarLoop]: === Iteration 51 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:31:33,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:31:33,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1215038581, now seen corresponding path program 8 times [2020-10-15 19:31:33,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:31:33,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868128608] [2020-10-15 19:31:33,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:31:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:31:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:31:33,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868128608] [2020-10-15 19:31:33,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712676058] [2020-10-15 19:31:33,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:31:33,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:31:33,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:31:33,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:31:33,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:31:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:31:33,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:31:33,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:31:33,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173743301] [2020-10-15 19:31:33,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:31:33,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:31:33,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:31:33,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:31:33,991 INFO L87 Difference]: Start difference. First operand 38274 states and 203647 transitions. Second operand 20 states. [2020-10-15 19:31:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:31:38,149 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-10-15 19:31:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:31:38,150 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:31:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:31:38,707 INFO L225 Difference]: With dead ends: 182849 [2020-10-15 19:31:38,707 INFO L226 Difference]: Without dead ends: 182825 [2020-10-15 19:31:38,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:31:40,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-10-15 19:31:43,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37880. [2020-10-15 19:31:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37880 states. [2020-10-15 19:31:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37880 states to 37880 states and 201614 transitions. [2020-10-15 19:31:43,386 INFO L78 Accepts]: Start accepts. Automaton has 37880 states and 201614 transitions. Word has length 27 [2020-10-15 19:31:43,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:31:43,386 INFO L481 AbstractCegarLoop]: Abstraction has 37880 states and 201614 transitions. [2020-10-15 19:31:43,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:31:43,386 INFO L276 IsEmpty]: Start isEmpty. Operand 37880 states and 201614 transitions. [2020-10-15 19:31:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:31:43,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:31:43,390 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:31:43,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-15 19:31:43,591 INFO L429 AbstractCegarLoop]: === Iteration 52 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:31:43,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:31:43,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1641326347, now seen corresponding path program 9 times [2020-10-15 19:31:43,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:31:43,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228745468] [2020-10-15 19:31:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:31:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:31:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:31:43,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228745468] [2020-10-15 19:31:43,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207508383] [2020-10-15 19:31:43,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:31:43,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 19:31:43,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:31:43,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:31:43,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:31:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:31:43,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:31:43,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:31:43,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209238260] [2020-10-15 19:31:43,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:31:43,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:31:43,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:31:43,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:31:43,956 INFO L87 Difference]: Start difference. First operand 37880 states and 201614 transitions. Second operand 20 states. [2020-10-15 19:31:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:31:47,798 INFO L93 Difference]: Finished difference Result 183813 states and 803277 transitions. [2020-10-15 19:31:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:31:47,799 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:31:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:31:48,293 INFO L225 Difference]: With dead ends: 183813 [2020-10-15 19:31:48,293 INFO L226 Difference]: Without dead ends: 183795 [2020-10-15 19:31:48,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:31:49,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183795 states. [2020-10-15 19:31:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183795 to 37981. [2020-10-15 19:31:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-10-15 19:31:52,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202099 transitions. [2020-10-15 19:31:52,067 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202099 transitions. Word has length 27 [2020-10-15 19:31:52,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:31:52,067 INFO L481 AbstractCegarLoop]: Abstraction has 37981 states and 202099 transitions. [2020-10-15 19:31:52,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:31:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202099 transitions. [2020-10-15 19:31:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:31:52,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:31:52,071 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:31:52,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-10-15 19:31:52,281 INFO L429 AbstractCegarLoop]: === Iteration 53 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:31:52,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:31:52,282 INFO L82 PathProgramCache]: Analyzing trace with hash -144395083, now seen corresponding path program 10 times [2020-10-15 19:31:52,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:31:52,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474629595] [2020-10-15 19:31:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:31:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:31:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:31:52,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474629595] [2020-10-15 19:31:52,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823675655] [2020-10-15 19:31:52,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:31:52,469 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:31:52,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:31:52,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:31:52,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:31:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:31:52,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:31:52,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:31:52,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289294278] [2020-10-15 19:31:52,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:31:52,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:31:52,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:31:52,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:31:52,649 INFO L87 Difference]: Start difference. First operand 37981 states and 202099 transitions. Second operand 20 states. [2020-10-15 19:31:57,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:31:57,034 INFO L93 Difference]: Finished difference Result 184566 states and 806586 transitions. [2020-10-15 19:31:57,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:31:57,035 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:31:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:31:57,551 INFO L225 Difference]: With dead ends: 184566 [2020-10-15 19:31:57,552 INFO L226 Difference]: Without dead ends: 184542 [2020-10-15 19:31:57,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:31:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184542 states. [2020-10-15 19:32:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184542 to 37715. [2020-10-15 19:32:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2020-10-15 19:32:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 200645 transitions. [2020-10-15 19:32:01,395 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 200645 transitions. Word has length 27 [2020-10-15 19:32:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:32:01,395 INFO L481 AbstractCegarLoop]: Abstraction has 37715 states and 200645 transitions. [2020-10-15 19:32:01,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:32:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 200645 transitions. [2020-10-15 19:32:01,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:32:01,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:32:01,400 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:32:01,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:32:01,614 INFO L429 AbstractCegarLoop]: === Iteration 54 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:32:01,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:32:01,614 INFO L82 PathProgramCache]: Analyzing trace with hash 484693941, now seen corresponding path program 11 times [2020-10-15 19:32:01,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:32:01,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763762212] [2020-10-15 19:32:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:32:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:32:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:32:01,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763762212] [2020-10-15 19:32:01,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216265965] [2020-10-15 19:32:01,713 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:32:01,802 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-15 19:32:01,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:32:01,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:32:01,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:32:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:32:01,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:32:01,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:32:01,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765179502] [2020-10-15 19:32:01,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:32:01,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:32:01,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:32:01,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:32:01,979 INFO L87 Difference]: Start difference. First operand 37715 states and 200645 transitions. Second operand 20 states. [2020-10-15 19:32:06,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:32:06,044 INFO L93 Difference]: Finished difference Result 183914 states and 803467 transitions. [2020-10-15 19:32:06,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:32:06,045 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:32:06,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:32:06,550 INFO L225 Difference]: With dead ends: 183914 [2020-10-15 19:32:06,550 INFO L226 Difference]: Without dead ends: 183896 [2020-10-15 19:32:06,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:32:08,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183896 states. [2020-10-15 19:32:10,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183896 to 37812. [2020-10-15 19:32:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37812 states. [2020-10-15 19:32:10,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37812 states to 37812 states and 201118 transitions. [2020-10-15 19:32:10,345 INFO L78 Accepts]: Start accepts. Automaton has 37812 states and 201118 transitions. Word has length 27 [2020-10-15 19:32:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:32:10,345 INFO L481 AbstractCegarLoop]: Abstraction has 37812 states and 201118 transitions. [2020-10-15 19:32:10,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:32:10,345 INFO L276 IsEmpty]: Start isEmpty. Operand 37812 states and 201118 transitions. [2020-10-15 19:32:10,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:32:10,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:32:10,349 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:32:10,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-15 19:32:10,550 INFO L429 AbstractCegarLoop]: === Iteration 55 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:32:10,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:32:10,550 INFO L82 PathProgramCache]: Analyzing trace with hash 468950901, now seen corresponding path program 12 times [2020-10-15 19:32:10,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:32:10,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982530785] [2020-10-15 19:32:10,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:32:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:32:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:32:10,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982530785] [2020-10-15 19:32:10,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578254403] [2020-10-15 19:32:10,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:32:10,747 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:32:10,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:32:10,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:32:10,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:32:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:32:10,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:32:10,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:32:10,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613389965] [2020-10-15 19:32:10,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:32:10,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:32:10,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:32:10,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:32:10,933 INFO L87 Difference]: Start difference. First operand 37812 states and 201118 transitions. Second operand 20 states. [2020-10-15 19:32:15,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:32:15,776 INFO L93 Difference]: Finished difference Result 182421 states and 796955 transitions. [2020-10-15 19:32:15,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:32:15,777 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:32:15,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:32:16,293 INFO L225 Difference]: With dead ends: 182421 [2020-10-15 19:32:16,293 INFO L226 Difference]: Without dead ends: 182393 [2020-10-15 19:32:16,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:32:17,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182393 states. [2020-10-15 19:32:19,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182393 to 37550. [2020-10-15 19:32:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37550 states. [2020-10-15 19:32:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37550 states to 37550 states and 199683 transitions. [2020-10-15 19:32:19,981 INFO L78 Accepts]: Start accepts. Automaton has 37550 states and 199683 transitions. Word has length 27 [2020-10-15 19:32:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:32:19,981 INFO L481 AbstractCegarLoop]: Abstraction has 37550 states and 199683 transitions. [2020-10-15 19:32:19,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:32:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 37550 states and 199683 transitions. [2020-10-15 19:32:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:32:19,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:32:19,985 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:32:20,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-10-15 19:32:20,193 INFO L429 AbstractCegarLoop]: === Iteration 56 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:32:20,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:32:20,193 INFO L82 PathProgramCache]: Analyzing trace with hash -528149714, now seen corresponding path program 1 times [2020-10-15 19:32:20,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:32:20,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769292429] [2020-10-15 19:32:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:32:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:32:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 19:32:20,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769292429] [2020-10-15 19:32:20,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483593453] [2020-10-15 19:32:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:32:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:32:20,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:32:20,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:32:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 19:32:20,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:32:20,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:32:20,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74045198] [2020-10-15 19:32:20,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:32:20,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:32:20,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:32:20,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:32:20,406 INFO L87 Difference]: Start difference. First operand 37550 states and 199683 transitions. Second operand 12 states. [2020-10-15 19:32:21,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:32:21,263 INFO L93 Difference]: Finished difference Result 86095 states and 418282 transitions. [2020-10-15 19:32:21,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:32:21,264 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-15 19:32:21,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:32:21,512 INFO L225 Difference]: With dead ends: 86095 [2020-10-15 19:32:21,512 INFO L226 Difference]: Without dead ends: 86043 [2020-10-15 19:32:21,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:32:22,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86043 states. [2020-10-15 19:32:24,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86043 to 39046. [2020-10-15 19:32:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-10-15 19:32:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207545 transitions. [2020-10-15 19:32:24,177 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207545 transitions. Word has length 27 [2020-10-15 19:32:24,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:32:24,178 INFO L481 AbstractCegarLoop]: Abstraction has 39046 states and 207545 transitions. [2020-10-15 19:32:24,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:32:24,178 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207545 transitions. [2020-10-15 19:32:24,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:32:24,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:32:24,182 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:32:24,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:32:24,383 INFO L429 AbstractCegarLoop]: === Iteration 57 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:32:24,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:32:24,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1008837557, now seen corresponding path program 13 times [2020-10-15 19:32:24,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:32:24,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733440598] [2020-10-15 19:32:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:32:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:32:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:32:24,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733440598] [2020-10-15 19:32:24,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81453855] [2020-10-15 19:32:24,479 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:32:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:32:24,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:32:24,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:32:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:32:24,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:32:24,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:32:24,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976012915] [2020-10-15 19:32:24,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:32:24,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:32:24,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:32:24,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:32:24,742 INFO L87 Difference]: Start difference. First operand 39046 states and 207545 transitions. Second operand 20 states. [2020-10-15 19:32:28,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:32:28,389 INFO L93 Difference]: Finished difference Result 182203 states and 795088 transitions. [2020-10-15 19:32:28,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:32:28,390 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:32:28,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:32:28,888 INFO L225 Difference]: With dead ends: 182203 [2020-10-15 19:32:28,888 INFO L226 Difference]: Without dead ends: 182185 [2020-10-15 19:32:28,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:32:30,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182185 states. [2020-10-15 19:32:32,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182185 to 38881. [2020-10-15 19:32:32,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38881 states. [2020-10-15 19:32:32,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38881 states to 38881 states and 206740 transitions. [2020-10-15 19:32:32,640 INFO L78 Accepts]: Start accepts. Automaton has 38881 states and 206740 transitions. Word has length 27 [2020-10-15 19:32:32,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:32:32,640 INFO L481 AbstractCegarLoop]: Abstraction has 38881 states and 206740 transitions. [2020-10-15 19:32:32,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:32:32,640 INFO L276 IsEmpty]: Start isEmpty. Operand 38881 states and 206740 transitions. [2020-10-15 19:32:32,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:32:32,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:32:32,645 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:32:32,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:32:32,861 INFO L429 AbstractCegarLoop]: === Iteration 58 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:32:32,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:32:32,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1789198475, now seen corresponding path program 14 times [2020-10-15 19:32:32,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:32:32,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805487160] [2020-10-15 19:32:32,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:32:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:32:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:32:32,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805487160] [2020-10-15 19:32:32,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886460343] [2020-10-15 19:32:32,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:32:33,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:32:33,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:32:33,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:32:33,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:32:33,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:32:33,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:32:33,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:32:33,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027976346] [2020-10-15 19:32:33,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:32:33,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:32:33,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:32:33,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:32:33,840 INFO L87 Difference]: Start difference. First operand 38881 states and 206740 transitions. Second operand 20 states. [2020-10-15 19:32:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:32:37,628 INFO L93 Difference]: Finished difference Result 182814 states and 797848 transitions. [2020-10-15 19:32:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:32:37,629 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:32:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:32:38,120 INFO L225 Difference]: With dead ends: 182814 [2020-10-15 19:32:38,120 INFO L226 Difference]: Without dead ends: 182790 [2020-10-15 19:32:38,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:32:39,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182790 states. [2020-10-15 19:32:41,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182790 to 38491. [2020-10-15 19:32:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38491 states. [2020-10-15 19:32:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 204715 transitions. [2020-10-15 19:32:41,923 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 204715 transitions. Word has length 27 [2020-10-15 19:32:41,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:32:41,923 INFO L481 AbstractCegarLoop]: Abstraction has 38491 states and 204715 transitions. [2020-10-15 19:32:41,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:32:41,923 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 204715 transitions. [2020-10-15 19:32:41,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:32:41,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:32:41,928 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:32:42,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:32:42,129 INFO L429 AbstractCegarLoop]: === Iteration 59 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:32:42,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:32:42,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1120567157, now seen corresponding path program 15 times [2020-10-15 19:32:42,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:32:42,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221991114] [2020-10-15 19:32:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:32:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:32:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:32:42,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221991114] [2020-10-15 19:32:42,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933837643] [2020-10-15 19:32:42,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:32:42,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:32:42,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:32:42,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:32:42,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:32:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:32:42,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:32:42,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:32:42,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843085190] [2020-10-15 19:32:42,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:32:42,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:32:42,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:32:42,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:32:42,524 INFO L87 Difference]: Start difference. First operand 38491 states and 204715 transitions. Second operand 20 states. [2020-10-15 19:32:46,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:32:46,779 INFO L93 Difference]: Finished difference Result 181233 states and 790722 transitions. [2020-10-15 19:32:46,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:32:46,780 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:32:46,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:32:47,262 INFO L225 Difference]: With dead ends: 181233 [2020-10-15 19:32:47,262 INFO L226 Difference]: Without dead ends: 181215 [2020-10-15 19:32:47,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:32:48,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181215 states. [2020-10-15 19:32:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181215 to 38192. [2020-10-15 19:32:50,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38192 states. [2020-10-15 19:32:50,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38192 states to 38192 states and 203358 transitions. [2020-10-15 19:32:50,922 INFO L78 Accepts]: Start accepts. Automaton has 38192 states and 203358 transitions. Word has length 27 [2020-10-15 19:32:50,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:32:50,923 INFO L481 AbstractCegarLoop]: Abstraction has 38192 states and 203358 transitions. [2020-10-15 19:32:50,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:32:50,923 INFO L276 IsEmpty]: Start isEmpty. Operand 38192 states and 203358 transitions. [2020-10-15 19:32:50,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:32:50,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:32:50,927 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:32:51,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-15 19:32:51,128 INFO L429 AbstractCegarLoop]: === Iteration 60 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:32:51,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:32:51,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1610215819, now seen corresponding path program 16 times [2020-10-15 19:32:51,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:32:51,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208950186] [2020-10-15 19:32:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:32:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:32:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:32:51,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208950186] [2020-10-15 19:32:51,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107929112] [2020-10-15 19:32:51,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:32:51,318 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:32:51,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:32:51,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:32:51,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:32:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:32:51,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:32:51,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:32:51,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032306097] [2020-10-15 19:32:51,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:32:51,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:32:51,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:32:51,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:32:51,512 INFO L87 Difference]: Start difference. First operand 38192 states and 203358 transitions. Second operand 20 states. [2020-10-15 19:32:55,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:32:55,659 INFO L93 Difference]: Finished difference Result 181989 states and 794023 transitions. [2020-10-15 19:32:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:32:55,660 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:32:55,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:32:56,985 INFO L225 Difference]: With dead ends: 181989 [2020-10-15 19:32:56,985 INFO L226 Difference]: Without dead ends: 181965 [2020-10-15 19:32:56,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:32:58,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181965 states. [2020-10-15 19:33:00,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181965 to 37802. [2020-10-15 19:33:00,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37802 states. [2020-10-15 19:33:00,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37802 states to 37802 states and 201333 transitions. [2020-10-15 19:33:00,531 INFO L78 Accepts]: Start accepts. Automaton has 37802 states and 201333 transitions. Word has length 27 [2020-10-15 19:33:00,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:33:00,531 INFO L481 AbstractCegarLoop]: Abstraction has 37802 states and 201333 transitions. [2020-10-15 19:33:00,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:33:00,531 INFO L276 IsEmpty]: Start isEmpty. Operand 37802 states and 201333 transitions. [2020-10-15 19:33:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:33:00,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:33:00,535 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:33:00,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-15 19:33:00,742 INFO L429 AbstractCegarLoop]: === Iteration 61 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:33:00,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:33:00,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1846620555, now seen corresponding path program 17 times [2020-10-15 19:33:00,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:33:00,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327000994] [2020-10-15 19:33:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:33:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:33:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:33:00,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327000994] [2020-10-15 19:33:00,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212668980] [2020-10-15 19:33:00,848 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:33:00,933 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-15 19:33:00,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:33:00,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:33:00,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:33:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:33:01,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:33:01,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:33:01,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627699025] [2020-10-15 19:33:01,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:33:01,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:33:01,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:33:01,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:33:01,131 INFO L87 Difference]: Start difference. First operand 37802 states and 201333 transitions. Second operand 20 states. [2020-10-15 19:33:04,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:33:04,989 INFO L93 Difference]: Finished difference Result 183299 states and 799959 transitions. [2020-10-15 19:33:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:33:04,989 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:33:04,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:33:05,484 INFO L225 Difference]: With dead ends: 183299 [2020-10-15 19:33:05,484 INFO L226 Difference]: Without dead ends: 183281 [2020-10-15 19:33:05,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:33:07,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183281 states. [2020-10-15 19:33:09,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183281 to 37899. [2020-10-15 19:33:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37899 states. [2020-10-15 19:33:09,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 201806 transitions. [2020-10-15 19:33:09,824 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 201806 transitions. Word has length 27 [2020-10-15 19:33:09,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:33:09,824 INFO L481 AbstractCegarLoop]: Abstraction has 37899 states and 201806 transitions. [2020-10-15 19:33:09,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:33:09,824 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 201806 transitions. [2020-10-15 19:33:09,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:33:09,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:33:09,829 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:33:10,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-15 19:33:10,030 INFO L429 AbstractCegarLoop]: === Iteration 62 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:33:10,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:33:10,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1873315275, now seen corresponding path program 18 times [2020-10-15 19:33:10,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:33:10,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912393237] [2020-10-15 19:33:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:33:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:33:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:33:10,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912393237] [2020-10-15 19:33:10,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838836751] [2020-10-15 19:33:10,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:33:10,236 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:33:10,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:33:10,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:33:10,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:33:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:33:10,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:33:10,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 19:33:10,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473129059] [2020-10-15 19:33:10,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 19:33:10,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:33:10,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 19:33:10,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:33:10,429 INFO L87 Difference]: Start difference. First operand 37899 states and 201806 transitions. Second operand 20 states. [2020-10-15 19:33:14,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:33:14,377 INFO L93 Difference]: Finished difference Result 182890 states and 798217 transitions. [2020-10-15 19:33:14,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:33:14,377 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 19:33:14,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:33:14,908 INFO L225 Difference]: With dead ends: 182890 [2020-10-15 19:33:14,908 INFO L226 Difference]: Without dead ends: 182862 [2020-10-15 19:33:14,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 19:33:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182862 states. [2020-10-15 19:33:19,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182862 to 37637. [2020-10-15 19:33:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37637 states. [2020-10-15 19:33:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37637 states to 37637 states and 200371 transitions. [2020-10-15 19:33:19,457 INFO L78 Accepts]: Start accepts. Automaton has 37637 states and 200371 transitions. Word has length 27 [2020-10-15 19:33:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:33:19,457 INFO L481 AbstractCegarLoop]: Abstraction has 37637 states and 200371 transitions. [2020-10-15 19:33:19,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 19:33:19,457 INFO L276 IsEmpty]: Start isEmpty. Operand 37637 states and 200371 transitions. [2020-10-15 19:33:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:33:19,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:33:19,462 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:33:19,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-15 19:33:19,662 INFO L429 AbstractCegarLoop]: === Iteration 63 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:33:19,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:33:19,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1424539998, now seen corresponding path program 1 times [2020-10-15 19:33:19,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:33:19,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800691361] [2020-10-15 19:33:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:33:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:33:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:33:19,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800691361] [2020-10-15 19:33:19,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436034489] [2020-10-15 19:33:19,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:33:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:33:19,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:33:19,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:33:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:33:19,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:33:19,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:33:19,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008798920] [2020-10-15 19:33:19,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:33:19,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:33:19,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:33:19,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:33:19,883 INFO L87 Difference]: Start difference. First operand 37637 states and 200371 transitions. Second operand 12 states. [2020-10-15 19:33:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:33:20,897 INFO L93 Difference]: Finished difference Result 88848 states and 432494 transitions. [2020-10-15 19:33:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:33:20,898 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-15 19:33:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:33:21,154 INFO L225 Difference]: With dead ends: 88848 [2020-10-15 19:33:21,155 INFO L226 Difference]: Without dead ends: 88788 [2020-10-15 19:33:21,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:33:22,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88788 states. [2020-10-15 19:33:23,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88788 to 39292. [2020-10-15 19:33:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39292 states. [2020-10-15 19:33:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39292 states to 39292 states and 209387 transitions. [2020-10-15 19:33:23,233 INFO L78 Accepts]: Start accepts. Automaton has 39292 states and 209387 transitions. Word has length 27 [2020-10-15 19:33:23,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:33:23,233 INFO L481 AbstractCegarLoop]: Abstraction has 39292 states and 209387 transitions. [2020-10-15 19:33:23,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:33:23,233 INFO L276 IsEmpty]: Start isEmpty. Operand 39292 states and 209387 transitions. [2020-10-15 19:33:23,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:33:23,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:33:23,238 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:33:23,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:33:23,439 INFO L429 AbstractCegarLoop]: === Iteration 64 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:33:23,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:33:23,439 INFO L82 PathProgramCache]: Analyzing trace with hash -839318940, now seen corresponding path program 1 times [2020-10-15 19:33:23,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:33:23,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505261466] [2020-10-15 19:33:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:33:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:33:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:33:23,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505261466] [2020-10-15 19:33:23,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115840120] [2020-10-15 19:33:23,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:33:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:33:23,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:33:23,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:33:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:33:23,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:33:23,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:33:23,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563192759] [2020-10-15 19:33:23,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:33:23,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:33:23,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:33:23,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:33:23,659 INFO L87 Difference]: Start difference. First operand 39292 states and 209387 transitions. Second operand 12 states. [2020-10-15 19:33:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:33:24,649 INFO L93 Difference]: Finished difference Result 92913 states and 454143 transitions. [2020-10-15 19:33:24,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:33:24,650 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-15 19:33:24,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:33:24,936 INFO L225 Difference]: With dead ends: 92913 [2020-10-15 19:33:24,937 INFO L226 Difference]: Without dead ends: 92836 [2020-10-15 19:33:24,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:33:25,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92836 states. [2020-10-15 19:33:27,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92836 to 40834. [2020-10-15 19:33:27,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40834 states. [2020-10-15 19:33:27,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40834 states to 40834 states and 218021 transitions. [2020-10-15 19:33:27,743 INFO L78 Accepts]: Start accepts. Automaton has 40834 states and 218021 transitions. Word has length 27 [2020-10-15 19:33:27,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:33:27,743 INFO L481 AbstractCegarLoop]: Abstraction has 40834 states and 218021 transitions. [2020-10-15 19:33:27,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:33:27,744 INFO L276 IsEmpty]: Start isEmpty. Operand 40834 states and 218021 transitions. [2020-10-15 19:33:27,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:33:27,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:33:27,752 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:33:27,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-15 19:33:27,954 INFO L429 AbstractCegarLoop]: === Iteration 65 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:33:27,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:33:27,955 INFO L82 PathProgramCache]: Analyzing trace with hash -947827339, now seen corresponding path program 19 times [2020-10-15 19:33:27,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:33:27,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215137518] [2020-10-15 19:33:27,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:33:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:33:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:33:28,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215137518] [2020-10-15 19:33:28,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:33:28,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 19:33:28,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990206408] [2020-10-15 19:33:28,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:33:28,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:33:28,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:33:28,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:33:28,068 INFO L87 Difference]: Start difference. First operand 40834 states and 218021 transitions. Second operand 11 states. [2020-10-15 19:33:31,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:33:31,631 INFO L93 Difference]: Finished difference Result 180696 states and 786321 transitions. [2020-10-15 19:33:31,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:33:31,632 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 19:33:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:33:32,143 INFO L225 Difference]: With dead ends: 180696 [2020-10-15 19:33:32,143 INFO L226 Difference]: Without dead ends: 180678 [2020-10-15 19:33:32,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 19:33:33,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180678 states. [2020-10-15 19:33:35,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180678 to 40673. [2020-10-15 19:33:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40673 states. [2020-10-15 19:33:35,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 217228 transitions. [2020-10-15 19:33:35,894 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 217228 transitions. Word has length 27 [2020-10-15 19:33:35,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:33:35,895 INFO L481 AbstractCegarLoop]: Abstraction has 40673 states and 217228 transitions. [2020-10-15 19:33:35,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:33:35,895 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 217228 transitions. [2020-10-15 19:33:35,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:33:35,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:33:35,902 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:33:35,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-10-15 19:33:35,902 INFO L429 AbstractCegarLoop]: === Iteration 66 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:33:35,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:33:35,902 INFO L82 PathProgramCache]: Analyzing trace with hash -963570379, now seen corresponding path program 20 times [2020-10-15 19:33:35,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:33:35,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241571058] [2020-10-15 19:33:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:33:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:33:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:33:36,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241571058] [2020-10-15 19:33:36,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:33:36,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 19:33:36,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899858406] [2020-10-15 19:33:36,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:33:36,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:33:36,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:33:36,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:33:36,010 INFO L87 Difference]: Start difference. First operand 40673 states and 217228 transitions. Second operand 11 states. [2020-10-15 19:33:38,243 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-10-15 19:33:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:33:40,102 INFO L93 Difference]: Finished difference Result 180287 states and 784579 transitions. [2020-10-15 19:33:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:33:40,103 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 19:33:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:33:40,623 INFO L225 Difference]: With dead ends: 180287 [2020-10-15 19:33:40,623 INFO L226 Difference]: Without dead ends: 180263 [2020-10-15 19:33:40,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 19:33:42,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180263 states. [2020-10-15 19:33:44,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180263 to 40321. [2020-10-15 19:33:44,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40321 states. [2020-10-15 19:33:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 215433 transitions. [2020-10-15 19:33:44,414 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 215433 transitions. Word has length 27 [2020-10-15 19:33:44,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:33:44,415 INFO L481 AbstractCegarLoop]: Abstraction has 40321 states and 215433 transitions. [2020-10-15 19:33:44,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:33:44,415 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 215433 transitions. [2020-10-15 19:33:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:33:44,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:33:44,420 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:33:44,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-10-15 19:33:44,420 INFO L429 AbstractCegarLoop]: === Iteration 67 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:33:44,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:33:44,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1412510069, now seen corresponding path program 21 times [2020-10-15 19:33:44,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:33:44,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423671155] [2020-10-15 19:33:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:33:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:33:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:33:44,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423671155] [2020-10-15 19:33:44,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:33:44,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 19:33:44,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36685711] [2020-10-15 19:33:44,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:33:44,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:33:44,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:33:44,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:33:44,516 INFO L87 Difference]: Start difference. First operand 40321 states and 215433 transitions. Second operand 11 states. [2020-10-15 19:33:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:33:48,966 INFO L93 Difference]: Finished difference Result 179815 states and 782456 transitions. [2020-10-15 19:33:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:33:48,967 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 19:33:48,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:33:49,505 INFO L225 Difference]: With dead ends: 179815 [2020-10-15 19:33:49,506 INFO L226 Difference]: Without dead ends: 179797 [2020-10-15 19:33:49,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 19:33:51,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179797 states. [2020-10-15 19:33:53,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179797 to 40030. [2020-10-15 19:33:53,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40030 states. [2020-10-15 19:33:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40030 states to 40030 states and 214096 transitions. [2020-10-15 19:33:53,153 INFO L78 Accepts]: Start accepts. Automaton has 40030 states and 214096 transitions. Word has length 27 [2020-10-15 19:33:53,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:33:53,154 INFO L481 AbstractCegarLoop]: Abstraction has 40030 states and 214096 transitions. [2020-10-15 19:33:53,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:33:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 40030 states and 214096 transitions. [2020-10-15 19:33:53,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:33:53,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:33:53,159 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:33:53,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-10-15 19:33:53,159 INFO L429 AbstractCegarLoop]: === Iteration 68 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:33:53,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:33:53,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1385815349, now seen corresponding path program 22 times [2020-10-15 19:33:53,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:33:53,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067728062] [2020-10-15 19:33:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:33:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:33:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:33:53,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067728062] [2020-10-15 19:33:53,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:33:53,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 19:33:53,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733012709] [2020-10-15 19:33:53,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:33:53,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:33:53,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:33:53,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:33:53,267 INFO L87 Difference]: Start difference. First operand 40030 states and 214096 transitions. Second operand 11 states. [2020-10-15 19:33:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:33:57,087 INFO L93 Difference]: Finished difference Result 179585 states and 781438 transitions. [2020-10-15 19:33:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:33:57,088 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 19:33:57,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:33:57,566 INFO L225 Difference]: With dead ends: 179585 [2020-10-15 19:33:57,566 INFO L226 Difference]: Without dead ends: 179561 [2020-10-15 19:33:57,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 19:34:00,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179561 states. [2020-10-15 19:34:01,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179561 to 39678. [2020-10-15 19:34:01,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39678 states. [2020-10-15 19:34:02,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39678 states to 39678 states and 212301 transitions. [2020-10-15 19:34:02,036 INFO L78 Accepts]: Start accepts. Automaton has 39678 states and 212301 transitions. Word has length 27 [2020-10-15 19:34:02,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:34:02,036 INFO L481 AbstractCegarLoop]: Abstraction has 39678 states and 212301 transitions. [2020-10-15 19:34:02,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:34:02,036 INFO L276 IsEmpty]: Start isEmpty. Operand 39678 states and 212301 transitions. [2020-10-15 19:34:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:34:02,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:34:02,041 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:34:02,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-10-15 19:34:02,041 INFO L429 AbstractCegarLoop]: === Iteration 69 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:34:02,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:34:02,042 INFO L82 PathProgramCache]: Analyzing trace with hash -847392523, now seen corresponding path program 23 times [2020-10-15 19:34:02,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:34:02,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62896951] [2020-10-15 19:34:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:34:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:34:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:34:02,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62896951] [2020-10-15 19:34:02,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:34:02,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 19:34:02,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524227221] [2020-10-15 19:34:02,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:34:02,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:34:02,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:34:02,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:34:02,148 INFO L87 Difference]: Start difference. First operand 39678 states and 212301 transitions. Second operand 11 states. [2020-10-15 19:34:05,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:34:05,867 INFO L93 Difference]: Finished difference Result 179113 states and 779315 transitions. [2020-10-15 19:34:05,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:34:05,868 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 19:34:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:34:06,361 INFO L225 Difference]: With dead ends: 179113 [2020-10-15 19:34:06,361 INFO L226 Difference]: Without dead ends: 179095 [2020-10-15 19:34:06,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 19:34:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179095 states. [2020-10-15 19:34:10,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179095 to 39387. [2020-10-15 19:34:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39387 states. [2020-10-15 19:34:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39387 states to 39387 states and 210964 transitions. [2020-10-15 19:34:10,909 INFO L78 Accepts]: Start accepts. Automaton has 39387 states and 210964 transitions. Word has length 27 [2020-10-15 19:34:10,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:34:10,909 INFO L481 AbstractCegarLoop]: Abstraction has 39387 states and 210964 transitions. [2020-10-15 19:34:10,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:34:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 39387 states and 210964 transitions. [2020-10-15 19:34:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:34:10,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:34:10,914 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:34:10,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-10-15 19:34:10,915 INFO L429 AbstractCegarLoop]: === Iteration 70 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:34:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:34:10,915 INFO L82 PathProgramCache]: Analyzing trace with hash -858344203, now seen corresponding path program 24 times [2020-10-15 19:34:10,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:34:10,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541248019] [2020-10-15 19:34:10,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:34:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:34:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:34:11,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541248019] [2020-10-15 19:34:11,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:34:11,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 19:34:11,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349669516] [2020-10-15 19:34:11,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:34:11,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:34:11,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:34:11,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:34:11,024 INFO L87 Difference]: Start difference. First operand 39387 states and 210964 transitions. Second operand 11 states. [2020-10-15 19:34:14,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:34:14,913 INFO L93 Difference]: Finished difference Result 178704 states and 777573 transitions. [2020-10-15 19:34:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 19:34:14,914 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 19:34:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:34:15,428 INFO L225 Difference]: With dead ends: 178704 [2020-10-15 19:34:15,429 INFO L226 Difference]: Without dead ends: 178675 [2020-10-15 19:34:15,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 19:34:17,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178675 states. [2020-10-15 19:34:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178675 to 38805. [2020-10-15 19:34:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38805 states. [2020-10-15 19:34:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38805 states to 38805 states and 208284 transitions. [2020-10-15 19:34:19,090 INFO L78 Accepts]: Start accepts. Automaton has 38805 states and 208284 transitions. Word has length 27 [2020-10-15 19:34:19,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:34:19,090 INFO L481 AbstractCegarLoop]: Abstraction has 38805 states and 208284 transitions. [2020-10-15 19:34:19,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:34:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 38805 states and 208284 transitions. [2020-10-15 19:34:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:34:19,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:34:19,095 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:34:19,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-10-15 19:34:19,095 INFO L429 AbstractCegarLoop]: === Iteration 71 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:34:19,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:34:19,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1294328210, now seen corresponding path program 2 times [2020-10-15 19:34:19,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:34:19,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203268250] [2020-10-15 19:34:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:34:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:34:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:34:19,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203268250] [2020-10-15 19:34:19,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:34:19,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:34:19,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946343337] [2020-10-15 19:34:19,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:34:19,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:34:19,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:34:19,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:34:19,149 INFO L87 Difference]: Start difference. First operand 38805 states and 208284 transitions. Second operand 7 states. [2020-10-15 19:34:20,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:34:20,502 INFO L93 Difference]: Finished difference Result 90966 states and 445145 transitions. [2020-10-15 19:34:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:34:20,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-15 19:34:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:34:20,798 INFO L225 Difference]: With dead ends: 90966 [2020-10-15 19:34:20,798 INFO L226 Difference]: Without dead ends: 90889 [2020-10-15 19:34:20,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:34:21,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90889 states. [2020-10-15 19:34:22,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90889 to 40453. [2020-10-15 19:34:22,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40453 states. [2020-10-15 19:34:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 217061 transitions. [2020-10-15 19:34:22,975 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 217061 transitions. Word has length 27 [2020-10-15 19:34:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:34:22,975 INFO L481 AbstractCegarLoop]: Abstraction has 40453 states and 217061 transitions. [2020-10-15 19:34:22,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:34:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 217061 transitions. [2020-10-15 19:34:22,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:34:22,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:34:22,980 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:34:22,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-10-15 19:34:22,980 INFO L429 AbstractCegarLoop]: === Iteration 72 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:34:22,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:34:22,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1294339618, now seen corresponding path program 2 times [2020-10-15 19:34:22,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:34:22,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658454404] [2020-10-15 19:34:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:34:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:34:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:34:23,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658454404] [2020-10-15 19:34:23,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:34:23,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:34:23,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710311456] [2020-10-15 19:34:23,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:34:23,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:34:23,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:34:23,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:34:23,031 INFO L87 Difference]: Start difference. First operand 40453 states and 217061 transitions. Second operand 7 states. [2020-10-15 19:34:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:34:23,867 INFO L93 Difference]: Finished difference Result 91560 states and 447373 transitions. [2020-10-15 19:34:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:34:23,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-15 19:34:23,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:34:24,157 INFO L225 Difference]: With dead ends: 91560 [2020-10-15 19:34:24,157 INFO L226 Difference]: Without dead ends: 91483 [2020-10-15 19:34:24,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:34:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91483 states. [2020-10-15 19:34:26,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91483 to 41467. [2020-10-15 19:34:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41467 states. [2020-10-15 19:34:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41467 states to 41467 states and 222391 transitions. [2020-10-15 19:34:26,407 INFO L78 Accepts]: Start accepts. Automaton has 41467 states and 222391 transitions. Word has length 27 [2020-10-15 19:34:26,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:34:26,407 INFO L481 AbstractCegarLoop]: Abstraction has 41467 states and 222391 transitions. [2020-10-15 19:34:26,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:34:26,407 INFO L276 IsEmpty]: Start isEmpty. Operand 41467 states and 222391 transitions. [2020-10-15 19:34:26,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:34:26,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:34:26,412 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:34:26,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-10-15 19:34:26,412 INFO L429 AbstractCegarLoop]: === Iteration 73 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:34:26,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:34:26,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1294356017, now seen corresponding path program 2 times [2020-10-15 19:34:26,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:34:26,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457544495] [2020-10-15 19:34:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:34:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:34:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:34:26,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457544495] [2020-10-15 19:34:26,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:34:26,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:34:26,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4597256] [2020-10-15 19:34:26,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:34:26,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:34:26,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:34:26,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:34:26,470 INFO L87 Difference]: Start difference. First operand 41467 states and 222391 transitions. Second operand 7 states. [2020-10-15 19:34:27,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:34:27,431 INFO L93 Difference]: Finished difference Result 92674 states and 452263 transitions. [2020-10-15 19:34:27,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:34:27,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-15 19:34:27,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:34:27,716 INFO L225 Difference]: With dead ends: 92674 [2020-10-15 19:34:27,716 INFO L226 Difference]: Without dead ends: 92597 [2020-10-15 19:34:27,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:34:29,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92597 states. [2020-10-15 19:34:30,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92597 to 42564. [2020-10-15 19:34:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42564 states. [2020-10-15 19:34:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42564 states to 42564 states and 227862 transitions. [2020-10-15 19:34:30,417 INFO L78 Accepts]: Start accepts. Automaton has 42564 states and 227862 transitions. Word has length 27 [2020-10-15 19:34:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:34:30,417 INFO L481 AbstractCegarLoop]: Abstraction has 42564 states and 227862 transitions. [2020-10-15 19:34:30,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:34:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 42564 states and 227862 transitions. [2020-10-15 19:34:30,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 19:34:30,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:34:30,423 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:34:30,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-10-15 19:34:30,423 INFO L429 AbstractCegarLoop]: === Iteration 74 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:34:30,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:34:30,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1294335650, now seen corresponding path program 2 times [2020-10-15 19:34:30,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:34:30,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423865961] [2020-10-15 19:34:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:34:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:34:30,481 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:34:30,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423865961] [2020-10-15 19:34:30,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:34:30,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 19:34:30,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679463296] [2020-10-15 19:34:30,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 19:34:30,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:34:30,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 19:34:30,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:34:30,482 INFO L87 Difference]: Start difference. First operand 42564 states and 227862 transitions. Second operand 7 states. [2020-10-15 19:34:31,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:34:31,457 INFO L93 Difference]: Finished difference Result 93922 states and 458312 transitions. [2020-10-15 19:34:31,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:34:31,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-15 19:34:31,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:34:31,750 INFO L225 Difference]: With dead ends: 93922 [2020-10-15 19:34:31,750 INFO L226 Difference]: Without dead ends: 93845 [2020-10-15 19:34:31,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:34:32,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93845 states. [2020-10-15 19:34:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93845 to 43794. [2020-10-15 19:34:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-10-15 19:34:34,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-10-15 19:34:34,113 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-10-15 19:34:34,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:34:34,114 INFO L481 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-10-15 19:34:34,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 19:34:34,114 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-10-15 19:34:34,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:34:34,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:34:34,121 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:34:34,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-10-15 19:34:34,121 INFO L429 AbstractCegarLoop]: === Iteration 75 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:34:34,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:34:34,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1919686780, now seen corresponding path program 1 times [2020-10-15 19:34:34,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:34:34,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114791244] [2020-10-15 19:34:34,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:34:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:34:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:34:34,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114791244] [2020-10-15 19:34:34,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837303184] [2020-10-15 19:34:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:34:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:34:34,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:34:34,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:34:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:34:34,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:34:34,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:34:34,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568732804] [2020-10-15 19:34:34,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:34:34,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:34:34,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:34:34,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:34:34,447 INFO L87 Difference]: Start difference. First operand 43794 states and 233791 transitions. Second operand 16 states. [2020-10-15 19:34:36,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:34:36,358 INFO L93 Difference]: Finished difference Result 140781 states and 654227 transitions. [2020-10-15 19:34:36,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:34:36,359 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:34:36,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:34:37,578 INFO L225 Difference]: With dead ends: 140781 [2020-10-15 19:34:37,578 INFO L226 Difference]: Without dead ends: 140737 [2020-10-15 19:34:37,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:34:38,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140737 states. [2020-10-15 19:34:40,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140737 to 43602. [2020-10-15 19:34:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43602 states. [2020-10-15 19:34:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43602 states to 43602 states and 232379 transitions. [2020-10-15 19:34:40,519 INFO L78 Accepts]: Start accepts. Automaton has 43602 states and 232379 transitions. Word has length 29 [2020-10-15 19:34:40,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:34:40,520 INFO L481 AbstractCegarLoop]: Abstraction has 43602 states and 232379 transitions. [2020-10-15 19:34:40,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:34:40,520 INFO L276 IsEmpty]: Start isEmpty. Operand 43602 states and 232379 transitions. [2020-10-15 19:34:40,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:34:40,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:34:40,527 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:34:40,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:34:40,728 INFO L429 AbstractCegarLoop]: === Iteration 76 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:34:40,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:34:40,729 INFO L82 PathProgramCache]: Analyzing trace with hash -422590804, now seen corresponding path program 1 times [2020-10-15 19:34:40,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:34:40,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826260791] [2020-10-15 19:34:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:34:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:34:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:34:40,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826260791] [2020-10-15 19:34:40,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416722805] [2020-10-15 19:34:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:34:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:34:40,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:34:40,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:34:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:34:41,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:34:41,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:34:41,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167269840] [2020-10-15 19:34:41,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:34:41,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:34:41,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:34:41,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:34:41,031 INFO L87 Difference]: Start difference. First operand 43602 states and 232379 transitions. Second operand 16 states. [2020-10-15 19:34:42,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:34:42,925 INFO L93 Difference]: Finished difference Result 139468 states and 647412 transitions. [2020-10-15 19:34:42,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:34:42,926 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:34:42,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:34:43,324 INFO L225 Difference]: With dead ends: 139468 [2020-10-15 19:34:43,324 INFO L226 Difference]: Without dead ends: 139424 [2020-10-15 19:34:43,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:34:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139424 states. [2020-10-15 19:34:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139424 to 43506. [2020-10-15 19:34:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43506 states. [2020-10-15 19:34:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43506 states to 43506 states and 231546 transitions. [2020-10-15 19:34:47,234 INFO L78 Accepts]: Start accepts. Automaton has 43506 states and 231546 transitions. Word has length 29 [2020-10-15 19:34:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:34:47,234 INFO L481 AbstractCegarLoop]: Abstraction has 43506 states and 231546 transitions. [2020-10-15 19:34:47,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:34:47,234 INFO L276 IsEmpty]: Start isEmpty. Operand 43506 states and 231546 transitions. [2020-10-15 19:34:47,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:34:47,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:34:47,242 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:34:47,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:34:47,443 INFO L429 AbstractCegarLoop]: === Iteration 77 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:34:47,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:34:47,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1608517554, now seen corresponding path program 1 times [2020-10-15 19:34:47,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:34:47,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835454275] [2020-10-15 19:34:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:34:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:34:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:34:47,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835454275] [2020-10-15 19:34:47,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448165922] [2020-10-15 19:34:47,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:34:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:34:47,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:34:47,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:34:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:34:47,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:34:47,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:34:47,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675060231] [2020-10-15 19:34:47,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:34:47,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:34:47,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:34:47,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:34:47,750 INFO L87 Difference]: Start difference. First operand 43506 states and 231546 transitions. Second operand 16 states. [2020-10-15 19:34:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:34:49,661 INFO L93 Difference]: Finished difference Result 138170 states and 641113 transitions. [2020-10-15 19:34:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:34:49,662 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:34:49,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:34:50,075 INFO L225 Difference]: With dead ends: 138170 [2020-10-15 19:34:50,075 INFO L226 Difference]: Without dead ends: 138126 [2020-10-15 19:34:50,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:34:51,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138126 states. [2020-10-15 19:34:53,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138126 to 43481. [2020-10-15 19:34:53,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43481 states. [2020-10-15 19:34:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43481 states to 43481 states and 231123 transitions. [2020-10-15 19:34:53,203 INFO L78 Accepts]: Start accepts. Automaton has 43481 states and 231123 transitions. Word has length 29 [2020-10-15 19:34:53,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:34:53,204 INFO L481 AbstractCegarLoop]: Abstraction has 43481 states and 231123 transitions. [2020-10-15 19:34:53,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:34:53,204 INFO L276 IsEmpty]: Start isEmpty. Operand 43481 states and 231123 transitions. [2020-10-15 19:34:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:34:53,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:34:53,212 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:34:53,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:34:53,413 INFO L429 AbstractCegarLoop]: === Iteration 78 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:34:53,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:34:53,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1153508284, now seen corresponding path program 2 times [2020-10-15 19:34:53,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:34:53,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005013905] [2020-10-15 19:34:53,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:34:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:34:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 19:34:53,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005013905] [2020-10-15 19:34:53,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38367011] [2020-10-15 19:34:53,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:34:53,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:34:53,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:34:53,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:34:53,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:34:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 19:34:53,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:34:53,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:34:53,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573395923] [2020-10-15 19:34:53,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:34:53,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:34:53,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:34:53,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:34:53,711 INFO L87 Difference]: Start difference. First operand 43481 states and 231123 transitions. Second operand 16 states. [2020-10-15 19:34:55,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:34:55,756 INFO L93 Difference]: Finished difference Result 135919 states and 629813 transitions. [2020-10-15 19:34:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:34:55,757 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:34:55,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:34:56,140 INFO L225 Difference]: With dead ends: 135919 [2020-10-15 19:34:56,140 INFO L226 Difference]: Without dead ends: 135873 [2020-10-15 19:34:56,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:34:58,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135873 states. [2020-10-15 19:34:59,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135873 to 43684. [2020-10-15 19:34:59,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43684 states. [2020-10-15 19:34:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43684 states to 43684 states and 232067 transitions. [2020-10-15 19:34:59,778 INFO L78 Accepts]: Start accepts. Automaton has 43684 states and 232067 transitions. Word has length 29 [2020-10-15 19:34:59,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:34:59,778 INFO L481 AbstractCegarLoop]: Abstraction has 43684 states and 232067 transitions. [2020-10-15 19:34:59,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:34:59,778 INFO L276 IsEmpty]: Start isEmpty. Operand 43684 states and 232067 transitions. [2020-10-15 19:34:59,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:34:59,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:34:59,786 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:34:59,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:34:59,987 INFO L429 AbstractCegarLoop]: === Iteration 79 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:34:59,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:34:59,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1153496876, now seen corresponding path program 2 times [2020-10-15 19:34:59,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:34:59,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220812301] [2020-10-15 19:34:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:34:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:35:00,065 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 19:35:00,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220812301] [2020-10-15 19:35:00,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502926948] [2020-10-15 19:35:00,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:00,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:35:00,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:35:00,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:35:00,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:35:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 19:35:00,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:35:00,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:35:00,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24582943] [2020-10-15 19:35:00,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:35:00,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:35:00,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:35:00,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:35:00,314 INFO L87 Difference]: Start difference. First operand 43684 states and 232067 transitions. Second operand 16 states. [2020-10-15 19:35:02,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:35:02,602 INFO L93 Difference]: Finished difference Result 134838 states and 624786 transitions. [2020-10-15 19:35:02,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:35:02,603 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:35:02,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:35:03,013 INFO L225 Difference]: With dead ends: 134838 [2020-10-15 19:35:03,014 INFO L226 Difference]: Without dead ends: 134792 [2020-10-15 19:35:03,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:35:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134792 states. [2020-10-15 19:35:05,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134792 to 43622. [2020-10-15 19:35:05,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43622 states. [2020-10-15 19:35:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43622 states to 43622 states and 231628 transitions. [2020-10-15 19:35:07,249 INFO L78 Accepts]: Start accepts. Automaton has 43622 states and 231628 transitions. Word has length 29 [2020-10-15 19:35:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:35:07,249 INFO L481 AbstractCegarLoop]: Abstraction has 43622 states and 231628 transitions. [2020-10-15 19:35:07,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:35:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand 43622 states and 231628 transitions. [2020-10-15 19:35:07,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:35:07,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:35:07,258 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:35:07,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:07,459 INFO L429 AbstractCegarLoop]: === Iteration 80 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:35:07,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:35:07,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1153500844, now seen corresponding path program 2 times [2020-10-15 19:35:07,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:35:07,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157987532] [2020-10-15 19:35:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:35:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:35:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 19:35:07,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157987532] [2020-10-15 19:35:07,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211928569] [2020-10-15 19:35:07,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:07,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:35:07,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:35:07,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:35:07,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:35:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 19:35:07,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:35:07,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:35:07,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970384346] [2020-10-15 19:35:07,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:35:07,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:35:07,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:35:07,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:35:07,813 INFO L87 Difference]: Start difference. First operand 43622 states and 231628 transitions. Second operand 16 states. [2020-10-15 19:35:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:35:09,871 INFO L93 Difference]: Finished difference Result 133406 states and 618320 transitions. [2020-10-15 19:35:09,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:35:09,872 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:35:09,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:35:10,277 INFO L225 Difference]: With dead ends: 133406 [2020-10-15 19:35:10,277 INFO L226 Difference]: Without dead ends: 133360 [2020-10-15 19:35:10,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:35:11,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133360 states. [2020-10-15 19:35:13,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133360 to 43128. [2020-10-15 19:35:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43128 states. [2020-10-15 19:35:13,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43128 states to 43128 states and 228903 transitions. [2020-10-15 19:35:13,359 INFO L78 Accepts]: Start accepts. Automaton has 43128 states and 228903 transitions. Word has length 29 [2020-10-15 19:35:13,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:35:13,359 INFO L481 AbstractCegarLoop]: Abstraction has 43128 states and 228903 transitions. [2020-10-15 19:35:13,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:35:13,359 INFO L276 IsEmpty]: Start isEmpty. Operand 43128 states and 228903 transitions. [2020-10-15 19:35:13,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:35:13,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:35:13,367 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:35:13,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:13,573 INFO L429 AbstractCegarLoop]: === Iteration 81 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:35:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:35:13,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1591871556, now seen corresponding path program 3 times [2020-10-15 19:35:13,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:35:13,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565739477] [2020-10-15 19:35:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:35:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:35:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 19:35:13,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565739477] [2020-10-15 19:35:13,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587031013] [2020-10-15 19:35:13,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:13,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-15 19:35:13,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:35:13,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:35:13,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:35:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 19:35:13,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:35:13,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:35:13,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011725016] [2020-10-15 19:35:13,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:35:13,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:35:13,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:35:13,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:35:13,882 INFO L87 Difference]: Start difference. First operand 43128 states and 228903 transitions. Second operand 16 states. [2020-10-15 19:35:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:35:15,824 INFO L93 Difference]: Finished difference Result 135323 states and 626681 transitions. [2020-10-15 19:35:15,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:35:15,825 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:35:15,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:35:16,218 INFO L225 Difference]: With dead ends: 135323 [2020-10-15 19:35:16,218 INFO L226 Difference]: Without dead ends: 135279 [2020-10-15 19:35:16,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:35:17,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135279 states. [2020-10-15 19:35:19,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135279 to 42900. [2020-10-15 19:35:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42900 states. [2020-10-15 19:35:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42900 states to 42900 states and 227522 transitions. [2020-10-15 19:35:19,880 INFO L78 Accepts]: Start accepts. Automaton has 42900 states and 227522 transitions. Word has length 29 [2020-10-15 19:35:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:35:19,880 INFO L481 AbstractCegarLoop]: Abstraction has 42900 states and 227522 transitions. [2020-10-15 19:35:19,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:35:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 42900 states and 227522 transitions. [2020-10-15 19:35:19,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:35:19,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:35:19,888 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:35:20,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:20,089 INFO L429 AbstractCegarLoop]: === Iteration 82 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:35:20,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:35:20,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1973162059, now seen corresponding path program 1 times [2020-10-15 19:35:20,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:35:20,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484015121] [2020-10-15 19:35:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:35:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:35:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:35:20,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484015121] [2020-10-15 19:35:20,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783221766] [2020-10-15 19:35:20,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:35:20,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:35:20,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:35:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:35:20,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:35:20,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:35:20,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537071954] [2020-10-15 19:35:20,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:35:20,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:35:20,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:35:20,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:35:20,379 INFO L87 Difference]: Start difference. First operand 42900 states and 227522 transitions. Second operand 16 states. [2020-10-15 19:35:22,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:35:22,269 INFO L93 Difference]: Finished difference Result 141153 states and 654921 transitions. [2020-10-15 19:35:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:35:22,270 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:35:22,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:35:22,722 INFO L225 Difference]: With dead ends: 141153 [2020-10-15 19:35:22,722 INFO L226 Difference]: Without dead ends: 141109 [2020-10-15 19:35:22,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:35:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141109 states. [2020-10-15 19:35:25,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141109 to 42878. [2020-10-15 19:35:25,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42878 states. [2020-10-15 19:35:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42878 states to 42878 states and 227112 transitions. [2020-10-15 19:35:25,810 INFO L78 Accepts]: Start accepts. Automaton has 42878 states and 227112 transitions. Word has length 29 [2020-10-15 19:35:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:35:25,810 INFO L481 AbstractCegarLoop]: Abstraction has 42878 states and 227112 transitions. [2020-10-15 19:35:25,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:35:25,811 INFO L276 IsEmpty]: Start isEmpty. Operand 42878 states and 227112 transitions. [2020-10-15 19:35:25,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:35:25,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:35:25,819 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:35:26,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-15 19:35:26,020 INFO L429 AbstractCegarLoop]: === Iteration 83 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:35:26,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:35:26,020 INFO L82 PathProgramCache]: Analyzing trace with hash -290696879, now seen corresponding path program 1 times [2020-10-15 19:35:26,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:35:26,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961750058] [2020-10-15 19:35:26,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:35:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:35:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:35:26,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961750058] [2020-10-15 19:35:26,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421427779] [2020-10-15 19:35:26,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:35:26,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:35:26,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:35:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 19:35:26,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:35:26,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:35:26,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192813936] [2020-10-15 19:35:26,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:35:26,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:35:26,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:35:26,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:35:26,329 INFO L87 Difference]: Start difference. First operand 42878 states and 227112 transitions. Second operand 16 states. [2020-10-15 19:35:28,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:35:28,541 INFO L93 Difference]: Finished difference Result 139558 states and 647187 transitions. [2020-10-15 19:35:28,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:35:28,542 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:35:28,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:35:28,961 INFO L225 Difference]: With dead ends: 139558 [2020-10-15 19:35:28,961 INFO L226 Difference]: Without dead ends: 139514 [2020-10-15 19:35:28,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:35:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139514 states. [2020-10-15 19:35:31,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139514 to 42856. [2020-10-15 19:35:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42856 states. [2020-10-15 19:35:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42856 states to 42856 states and 226689 transitions. [2020-10-15 19:35:32,039 INFO L78 Accepts]: Start accepts. Automaton has 42856 states and 226689 transitions. Word has length 29 [2020-10-15 19:35:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:35:32,040 INFO L481 AbstractCegarLoop]: Abstraction has 42856 states and 226689 transitions. [2020-10-15 19:35:32,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:35:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 42856 states and 226689 transitions. [2020-10-15 19:35:32,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:35:32,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:35:32,048 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:35:32,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-15 19:35:32,248 INFO L429 AbstractCegarLoop]: === Iteration 84 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:35:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:35:32,249 INFO L82 PathProgramCache]: Analyzing trace with hash -745717557, now seen corresponding path program 2 times [2020-10-15 19:35:32,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:35:32,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379781828] [2020-10-15 19:35:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:35:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:35:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 19:35:32,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379781828] [2020-10-15 19:35:32,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684258951] [2020-10-15 19:35:32,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:32,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:35:32,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:35:32,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:35:32,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:35:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 19:35:32,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:35:32,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:35:32,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176242375] [2020-10-15 19:35:32,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:35:32,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:35:32,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:35:32,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:35:32,551 INFO L87 Difference]: Start difference. First operand 42856 states and 226689 transitions. Second operand 16 states. [2020-10-15 19:35:34,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:35:34,580 INFO L93 Difference]: Finished difference Result 137680 states and 637585 transitions. [2020-10-15 19:35:34,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:35:34,581 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:35:34,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:35:34,992 INFO L225 Difference]: With dead ends: 137680 [2020-10-15 19:35:34,992 INFO L226 Difference]: Without dead ends: 137630 [2020-10-15 19:35:34,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:35:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137630 states. [2020-10-15 19:35:38,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137630 to 42997. [2020-10-15 19:35:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42997 states. [2020-10-15 19:35:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42997 states to 42997 states and 227356 transitions. [2020-10-15 19:35:38,811 INFO L78 Accepts]: Start accepts. Automaton has 42997 states and 227356 transitions. Word has length 29 [2020-10-15 19:35:38,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:35:38,811 INFO L481 AbstractCegarLoop]: Abstraction has 42997 states and 227356 transitions. [2020-10-15 19:35:38,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:35:38,811 INFO L276 IsEmpty]: Start isEmpty. Operand 42997 states and 227356 transitions. [2020-10-15 19:35:38,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:35:38,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:35:38,820 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:35:39,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-15 19:35:39,021 INFO L429 AbstractCegarLoop]: === Iteration 85 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:35:39,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:35:39,021 INFO L82 PathProgramCache]: Analyzing trace with hash -745733956, now seen corresponding path program 4 times [2020-10-15 19:35:39,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:35:39,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527303899] [2020-10-15 19:35:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:35:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:35:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 19:35:39,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527303899] [2020-10-15 19:35:39,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71730496] [2020-10-15 19:35:39,101 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:39,184 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:35:39,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:35:39,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:35:39,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:35:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 19:35:39,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:35:39,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:35:39,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140393524] [2020-10-15 19:35:39,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:35:39,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:35:39,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:35:39,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:35:39,315 INFO L87 Difference]: Start difference. First operand 42997 states and 227356 transitions. Second operand 16 states. [2020-10-15 19:35:41,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:35:41,382 INFO L93 Difference]: Finished difference Result 134425 states and 621844 transitions. [2020-10-15 19:35:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:35:41,383 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:35:41,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:35:41,777 INFO L225 Difference]: With dead ends: 134425 [2020-10-15 19:35:41,777 INFO L226 Difference]: Without dead ends: 134379 [2020-10-15 19:35:41,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:35:43,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134379 states. [2020-10-15 19:35:44,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134379 to 42935. [2020-10-15 19:35:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42935 states. [2020-10-15 19:35:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42935 states to 42935 states and 226917 transitions. [2020-10-15 19:35:44,828 INFO L78 Accepts]: Start accepts. Automaton has 42935 states and 226917 transitions. Word has length 29 [2020-10-15 19:35:44,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:35:44,828 INFO L481 AbstractCegarLoop]: Abstraction has 42935 states and 226917 transitions. [2020-10-15 19:35:44,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:35:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 42935 states and 226917 transitions. [2020-10-15 19:35:44,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:35:44,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:35:44,838 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:35:45,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:45,039 INFO L429 AbstractCegarLoop]: === Iteration 86 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:35:45,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:35:45,039 INFO L82 PathProgramCache]: Analyzing trace with hash -745713589, now seen corresponding path program 2 times [2020-10-15 19:35:45,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:35:45,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814771715] [2020-10-15 19:35:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:35:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:35:45,120 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 19:35:45,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814771715] [2020-10-15 19:35:45,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425073855] [2020-10-15 19:35:45,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:45,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:35:45,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:35:45,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:35:45,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:35:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 19:35:45,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:35:45,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:35:45,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274243162] [2020-10-15 19:35:45,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:35:45,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:35:45,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:35:45,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:35:45,348 INFO L87 Difference]: Start difference. First operand 42935 states and 226917 transitions. Second operand 16 states. [2020-10-15 19:35:47,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:35:47,816 INFO L93 Difference]: Finished difference Result 135137 states and 625997 transitions. [2020-10-15 19:35:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:35:47,817 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:35:47,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:35:48,220 INFO L225 Difference]: With dead ends: 135137 [2020-10-15 19:35:48,221 INFO L226 Difference]: Without dead ends: 135087 [2020-10-15 19:35:48,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:35:49,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135087 states. [2020-10-15 19:35:51,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135087 to 42336. [2020-10-15 19:35:51,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42336 states. [2020-10-15 19:35:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42336 states to 42336 states and 223739 transitions. [2020-10-15 19:35:51,201 INFO L78 Accepts]: Start accepts. Automaton has 42336 states and 223739 transitions. Word has length 29 [2020-10-15 19:35:51,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:35:51,201 INFO L481 AbstractCegarLoop]: Abstraction has 42336 states and 223739 transitions. [2020-10-15 19:35:51,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:35:51,201 INFO L276 IsEmpty]: Start isEmpty. Operand 42336 states and 223739 transitions. [2020-10-15 19:35:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:35:51,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:35:51,210 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:35:51,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2020-10-15 19:35:51,417 INFO L429 AbstractCegarLoop]: === Iteration 87 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:35:51,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:35:51,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1865067275, now seen corresponding path program 3 times [2020-10-15 19:35:51,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:35:51,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061996278] [2020-10-15 19:35:51,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:35:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:35:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:35:51,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061996278] [2020-10-15 19:35:51,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504202638] [2020-10-15 19:35:51,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:51,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 19:35:51,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:35:51,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:35:51,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:35:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:35:51,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:35:51,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:35:51,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988217276] [2020-10-15 19:35:51,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:35:51,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:35:51,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:35:51,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:35:51,713 INFO L87 Difference]: Start difference. First operand 42336 states and 223739 transitions. Second operand 16 states. [2020-10-15 19:35:53,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:35:53,605 INFO L93 Difference]: Finished difference Result 136349 states and 630987 transitions. [2020-10-15 19:35:53,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:35:53,606 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:35:53,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:35:54,045 INFO L225 Difference]: With dead ends: 136349 [2020-10-15 19:35:54,045 INFO L226 Difference]: Without dead ends: 136305 [2020-10-15 19:35:54,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:35:55,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136305 states. [2020-10-15 19:35:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136305 to 42186. [2020-10-15 19:35:57,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42186 states. [2020-10-15 19:35:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42186 states to 42186 states and 222832 transitions. [2020-10-15 19:35:57,873 INFO L78 Accepts]: Start accepts. Automaton has 42186 states and 222832 transitions. Word has length 29 [2020-10-15 19:35:57,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:35:57,873 INFO L481 AbstractCegarLoop]: Abstraction has 42186 states and 222832 transitions. [2020-10-15 19:35:57,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:35:57,873 INFO L276 IsEmpty]: Start isEmpty. Operand 42186 states and 222832 transitions. [2020-10-15 19:35:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:35:57,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:35:57,882 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:35:58,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-15 19:35:58,083 INFO L429 AbstractCegarLoop]: === Iteration 88 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:35:58,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:35:58,083 INFO L82 PathProgramCache]: Analyzing trace with hash 2041985324, now seen corresponding path program 3 times [2020-10-15 19:35:58,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:35:58,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726060351] [2020-10-15 19:35:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:35:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:35:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:35:58,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726060351] [2020-10-15 19:35:58,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364798188] [2020-10-15 19:35:58,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:35:58,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 19:35:58,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:35:58,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:35:58,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:35:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:35:58,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:35:58,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:35:58,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687083246] [2020-10-15 19:35:58,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:35:58,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:35:58,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:35:58,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:35:58,377 INFO L87 Difference]: Start difference. First operand 42186 states and 222832 transitions. Second operand 16 states. [2020-10-15 19:36:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:36:00,461 INFO L93 Difference]: Finished difference Result 135812 states and 628090 transitions. [2020-10-15 19:36:00,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:36:00,462 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:36:00,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:36:00,865 INFO L225 Difference]: With dead ends: 135812 [2020-10-15 19:36:00,866 INFO L226 Difference]: Without dead ends: 135768 [2020-10-15 19:36:00,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:36:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135768 states. [2020-10-15 19:36:03,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135768 to 42079. [2020-10-15 19:36:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42079 states. [2020-10-15 19:36:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42079 states to 42079 states and 222233 transitions. [2020-10-15 19:36:03,845 INFO L78 Accepts]: Start accepts. Automaton has 42079 states and 222233 transitions. Word has length 29 [2020-10-15 19:36:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:36:03,846 INFO L481 AbstractCegarLoop]: Abstraction has 42079 states and 222233 transitions. [2020-10-15 19:36:03,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:36:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 42079 states and 222233 transitions. [2020-10-15 19:36:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:36:03,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:36:03,854 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:36:04,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:36:04,055 INFO L429 AbstractCegarLoop]: === Iteration 89 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:36:04,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:36:04,055 INFO L82 PathProgramCache]: Analyzing trace with hash -656591999, now seen corresponding path program 1 times [2020-10-15 19:36:04,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:36:04,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502455105] [2020-10-15 19:36:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:36:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:36:04,136 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:36:04,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502455105] [2020-10-15 19:36:04,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363088274] [2020-10-15 19:36:04,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:36:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:36:04,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:36:04,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:36:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 19:36:04,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:36:04,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:36:04,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549856903] [2020-10-15 19:36:04,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:36:04,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:36:04,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:36:04,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:36:04,366 INFO L87 Difference]: Start difference. First operand 42079 states and 222233 transitions. Second operand 16 states. [2020-10-15 19:36:06,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:36:06,344 INFO L93 Difference]: Finished difference Result 139249 states and 646209 transitions. [2020-10-15 19:36:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:36:06,345 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:36:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:36:06,769 INFO L225 Difference]: With dead ends: 139249 [2020-10-15 19:36:06,769 INFO L226 Difference]: Without dead ends: 139205 [2020-10-15 19:36:06,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:36:08,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139205 states. [2020-10-15 19:36:10,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139205 to 42066. [2020-10-15 19:36:10,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42066 states. [2020-10-15 19:36:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42066 states to 42066 states and 221912 transitions. [2020-10-15 19:36:10,341 INFO L78 Accepts]: Start accepts. Automaton has 42066 states and 221912 transitions. Word has length 29 [2020-10-15 19:36:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:36:10,341 INFO L481 AbstractCegarLoop]: Abstraction has 42066 states and 221912 transitions. [2020-10-15 19:36:10,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:36:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 42066 states and 221912 transitions. [2020-10-15 19:36:10,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:36:10,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:36:10,350 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:36:10,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:36:10,551 INFO L429 AbstractCegarLoop]: === Iteration 90 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:36:10,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:36:10,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1111601269, now seen corresponding path program 4 times [2020-10-15 19:36:10,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:36:10,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446760059] [2020-10-15 19:36:10,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:36:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:36:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:36:10,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446760059] [2020-10-15 19:36:10,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152683344] [2020-10-15 19:36:10,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:36:10,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:36:10,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:36:10,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:36:10,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:36:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:36:10,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:36:10,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:36:10,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820512438] [2020-10-15 19:36:10,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:36:10,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:36:10,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:36:10,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:36:10,863 INFO L87 Difference]: Start difference. First operand 42066 states and 221912 transitions. Second operand 16 states. [2020-10-15 19:36:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:36:12,814 INFO L93 Difference]: Finished difference Result 136710 states and 632229 transitions. [2020-10-15 19:36:12,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:36:12,816 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:36:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:36:13,222 INFO L225 Difference]: With dead ends: 136710 [2020-10-15 19:36:13,222 INFO L226 Difference]: Without dead ends: 136660 [2020-10-15 19:36:13,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:36:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136660 states. [2020-10-15 19:36:16,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136660 to 42207. [2020-10-15 19:36:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42207 states. [2020-10-15 19:36:16,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42207 states to 42207 states and 222579 transitions. [2020-10-15 19:36:16,156 INFO L78 Accepts]: Start accepts. Automaton has 42207 states and 222579 transitions. Word has length 29 [2020-10-15 19:36:16,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:36:16,157 INFO L481 AbstractCegarLoop]: Abstraction has 42207 states and 222579 transitions. [2020-10-15 19:36:16,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:36:16,157 INFO L276 IsEmpty]: Start isEmpty. Operand 42207 states and 222579 transitions. [2020-10-15 19:36:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:36:16,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:36:16,165 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:36:16,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:36:16,366 INFO L429 AbstractCegarLoop]: === Iteration 91 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:36:16,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:36:16,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1111629076, now seen corresponding path program 4 times [2020-10-15 19:36:16,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:36:16,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094711176] [2020-10-15 19:36:16,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:36:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:36:17,032 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-15 19:36:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:36:17,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094711176] [2020-10-15 19:36:17,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800418463] [2020-10-15 19:36:17,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:36:17,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:36:17,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:36:17,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:36:17,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:36:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:36:17,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:36:17,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:36:17,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327738069] [2020-10-15 19:36:17,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:36:17,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:36:17,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:36:17,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:36:17,345 INFO L87 Difference]: Start difference. First operand 42207 states and 222579 transitions. Second operand 16 states. [2020-10-15 19:36:19,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:36:19,409 INFO L93 Difference]: Finished difference Result 135625 states and 627192 transitions. [2020-10-15 19:36:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:36:19,410 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:36:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:36:19,818 INFO L225 Difference]: With dead ends: 135625 [2020-10-15 19:36:19,819 INFO L226 Difference]: Without dead ends: 135575 [2020-10-15 19:36:19,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:36:21,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135575 states. [2020-10-15 19:36:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135575 to 42083. [2020-10-15 19:36:22,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42083 states. [2020-10-15 19:36:22,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42083 states to 42083 states and 221863 transitions. [2020-10-15 19:36:22,751 INFO L78 Accepts]: Start accepts. Automaton has 42083 states and 221863 transitions. Word has length 29 [2020-10-15 19:36:22,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:36:22,752 INFO L481 AbstractCegarLoop]: Abstraction has 42083 states and 221863 transitions. [2020-10-15 19:36:22,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:36:22,752 INFO L276 IsEmpty]: Start isEmpty. Operand 42083 states and 221863 transitions. [2020-10-15 19:36:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:36:22,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:36:22,760 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:36:22,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-15 19:36:22,962 INFO L429 AbstractCegarLoop]: === Iteration 92 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:36:22,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:36:22,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1111608709, now seen corresponding path program 2 times [2020-10-15 19:36:22,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:36:22,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336915801] [2020-10-15 19:36:22,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:36:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:36:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:36:23,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336915801] [2020-10-15 19:36:23,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366915115] [2020-10-15 19:36:23,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:36:23,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:36:23,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:36:23,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:36:23,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:36:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 19:36:23,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:36:23,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:36:23,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456831022] [2020-10-15 19:36:23,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:36:23,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:36:23,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:36:23,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:36:23,274 INFO L87 Difference]: Start difference. First operand 42083 states and 221863 transitions. Second operand 16 states. [2020-10-15 19:36:25,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:36:25,698 INFO L93 Difference]: Finished difference Result 135171 states and 626620 transitions. [2020-10-15 19:36:25,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:36:25,699 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:36:25,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:36:26,140 INFO L225 Difference]: With dead ends: 135171 [2020-10-15 19:36:26,140 INFO L226 Difference]: Without dead ends: 135112 [2020-10-15 19:36:26,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:36:27,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135112 states. [2020-10-15 19:36:29,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135112 to 41353. [2020-10-15 19:36:29,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41353 states. [2020-10-15 19:36:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41353 states to 41353 states and 218067 transitions. [2020-10-15 19:36:29,764 INFO L78 Accepts]: Start accepts. Automaton has 41353 states and 218067 transitions. Word has length 29 [2020-10-15 19:36:29,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:36:29,764 INFO L481 AbstractCegarLoop]: Abstraction has 41353 states and 218067 transitions. [2020-10-15 19:36:29,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:36:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 41353 states and 218067 transitions. [2020-10-15 19:36:29,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:36:29,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:36:29,777 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:36:29,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-15 19:36:29,991 INFO L429 AbstractCegarLoop]: === Iteration 93 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:36:29,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:36:29,991 INFO L82 PathProgramCache]: Analyzing trace with hash 888585425, now seen corresponding path program 3 times [2020-10-15 19:36:29,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:36:29,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59918271] [2020-10-15 19:36:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:36:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:36:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:36:30,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59918271] [2020-10-15 19:36:30,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788771579] [2020-10-15 19:36:30,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:36:30,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:36:30,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:36:30,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:36:30,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:36:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:36:30,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:36:30,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:36:30,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134105107] [2020-10-15 19:36:30,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:36:30,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:36:30,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:36:30,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:36:30,332 INFO L87 Difference]: Start difference. First operand 41353 states and 218067 transitions. Second operand 16 states. [2020-10-15 19:36:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:36:32,584 INFO L93 Difference]: Finished difference Result 135561 states and 628000 transitions. [2020-10-15 19:36:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:36:32,585 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:36:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:36:32,966 INFO L225 Difference]: With dead ends: 135561 [2020-10-15 19:36:32,966 INFO L226 Difference]: Without dead ends: 135517 [2020-10-15 19:36:32,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:36:34,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135517 states. [2020-10-15 19:36:35,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135517 to 41345. [2020-10-15 19:36:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41345 states. [2020-10-15 19:36:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41345 states to 41345 states and 218006 transitions. [2020-10-15 19:36:35,942 INFO L78 Accepts]: Start accepts. Automaton has 41345 states and 218006 transitions. Word has length 29 [2020-10-15 19:36:35,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:36:35,942 INFO L481 AbstractCegarLoop]: Abstraction has 41345 states and 218006 transitions. [2020-10-15 19:36:35,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:36:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 41345 states and 218006 transitions. [2020-10-15 19:36:35,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:36:35,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:36:35,951 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:36:36,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-15 19:36:36,152 INFO L429 AbstractCegarLoop]: === Iteration 94 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:36:36,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:36:36,152 INFO L82 PathProgramCache]: Analyzing trace with hash 877622337, now seen corresponding path program 3 times [2020-10-15 19:36:36,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:36:36,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329785163] [2020-10-15 19:36:36,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:36:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:36:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:36:36,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329785163] [2020-10-15 19:36:36,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098126698] [2020-10-15 19:36:36,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:36:36,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:36:36,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:36:36,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:36:36,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:36:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:36:36,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:36:36,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:36:36,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255787510] [2020-10-15 19:36:36,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:36:36,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:36:36,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:36:36,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:36:36,455 INFO L87 Difference]: Start difference. First operand 41345 states and 218006 transitions. Second operand 16 states. [2020-10-15 19:36:39,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:36:39,527 INFO L93 Difference]: Finished difference Result 134714 states and 623609 transitions. [2020-10-15 19:36:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:36:39,528 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:36:39,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:36:39,898 INFO L225 Difference]: With dead ends: 134714 [2020-10-15 19:36:39,898 INFO L226 Difference]: Without dead ends: 134670 [2020-10-15 19:36:39,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:36:41,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134670 states. [2020-10-15 19:36:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134670 to 41247. [2020-10-15 19:36:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41247 states. [2020-10-15 19:36:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41247 states to 41247 states and 217534 transitions. [2020-10-15 19:36:42,704 INFO L78 Accepts]: Start accepts. Automaton has 41247 states and 217534 transitions. Word has length 29 [2020-10-15 19:36:42,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:36:42,704 INFO L481 AbstractCegarLoop]: Abstraction has 41247 states and 217534 transitions. [2020-10-15 19:36:42,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:36:42,704 INFO L276 IsEmpty]: Start isEmpty. Operand 41247 states and 217534 transitions. [2020-10-15 19:36:42,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:36:42,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:36:42,713 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:36:42,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-15 19:36:42,914 INFO L429 AbstractCegarLoop]: === Iteration 95 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:36:42,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:36:42,914 INFO L82 PathProgramCache]: Analyzing trace with hash 861862898, now seen corresponding path program 3 times [2020-10-15 19:36:42,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:36:42,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204171207] [2020-10-15 19:36:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:36:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:36:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:36:43,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204171207] [2020-10-15 19:36:43,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071814032] [2020-10-15 19:36:43,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:36:43,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:36:43,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:36:43,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:36:43,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:36:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:36:43,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:36:43,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:36:43,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018113736] [2020-10-15 19:36:43,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:36:43,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:36:43,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:36:43,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:36:43,321 INFO L87 Difference]: Start difference. First operand 41247 states and 217534 transitions. Second operand 16 states. [2020-10-15 19:36:45,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:36:45,602 INFO L93 Difference]: Finished difference Result 134144 states and 620566 transitions. [2020-10-15 19:36:45,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:36:45,603 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:36:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:36:46,011 INFO L225 Difference]: With dead ends: 134144 [2020-10-15 19:36:46,011 INFO L226 Difference]: Without dead ends: 134100 [2020-10-15 19:36:46,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:36:47,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134100 states. [2020-10-15 19:36:48,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134100 to 41026. [2020-10-15 19:36:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41026 states. [2020-10-15 19:36:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41026 states to 41026 states and 216444 transitions. [2020-10-15 19:36:49,970 INFO L78 Accepts]: Start accepts. Automaton has 41026 states and 216444 transitions. Word has length 29 [2020-10-15 19:36:49,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:36:49,971 INFO L481 AbstractCegarLoop]: Abstraction has 41026 states and 216444 transitions. [2020-10-15 19:36:49,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:36:49,971 INFO L276 IsEmpty]: Start isEmpty. Operand 41026 states and 216444 transitions. [2020-10-15 19:36:49,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:36:49,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:36:49,981 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:36:50,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-15 19:36:50,182 INFO L429 AbstractCegarLoop]: === Iteration 96 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:36:50,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:36:50,182 INFO L82 PathProgramCache]: Analyzing trace with hash 868378385, now seen corresponding path program 4 times [2020-10-15 19:36:50,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:36:50,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165772569] [2020-10-15 19:36:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:36:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:36:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:36:50,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165772569] [2020-10-15 19:36:50,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476233413] [2020-10-15 19:36:50,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:36:50,361 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:36:50,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:36:50,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:36:50,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:36:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:36:50,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:36:50,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:36:50,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123829727] [2020-10-15 19:36:50,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:36:50,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:36:50,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:36:50,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:36:50,520 INFO L87 Difference]: Start difference. First operand 41026 states and 216444 transitions. Second operand 16 states. [2020-10-15 19:36:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:36:52,567 INFO L93 Difference]: Finished difference Result 136110 states and 630361 transitions. [2020-10-15 19:36:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:36:52,568 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:36:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:36:52,954 INFO L225 Difference]: With dead ends: 136110 [2020-10-15 19:36:52,955 INFO L226 Difference]: Without dead ends: 136051 [2020-10-15 19:36:52,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:36:54,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136051 states. [2020-10-15 19:36:55,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136051 to 41075. [2020-10-15 19:36:55,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41075 states. [2020-10-15 19:36:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41075 states to 41075 states and 216669 transitions. [2020-10-15 19:36:55,950 INFO L78 Accepts]: Start accepts. Automaton has 41075 states and 216669 transitions. Word has length 29 [2020-10-15 19:36:55,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:36:55,951 INFO L481 AbstractCegarLoop]: Abstraction has 41075 states and 216669 transitions. [2020-10-15 19:36:55,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:36:55,951 INFO L276 IsEmpty]: Start isEmpty. Operand 41075 states and 216669 transitions. [2020-10-15 19:36:55,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:36:55,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:36:55,959 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:36:56,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2020-10-15 19:36:56,160 INFO L429 AbstractCegarLoop]: === Iteration 97 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:36:56,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:36:56,161 INFO L82 PathProgramCache]: Analyzing trace with hash 868366977, now seen corresponding path program 4 times [2020-10-15 19:36:56,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:36:56,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142564411] [2020-10-15 19:36:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:36:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:36:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:36:56,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142564411] [2020-10-15 19:36:56,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815233420] [2020-10-15 19:36:56,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:36:56,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:36:56,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:36:56,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:36:56,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:36:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:36:56,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:36:56,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:36:56,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105280617] [2020-10-15 19:36:56,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:36:56,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:36:56,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:36:56,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:36:56,487 INFO L87 Difference]: Start difference. First operand 41075 states and 216669 transitions. Second operand 16 states. [2020-10-15 19:36:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:36:58,936 INFO L93 Difference]: Finished difference Result 134992 states and 625253 transitions. [2020-10-15 19:36:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:36:58,937 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:36:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:36:59,357 INFO L225 Difference]: With dead ends: 134992 [2020-10-15 19:36:59,357 INFO L226 Difference]: Without dead ends: 134933 [2020-10-15 19:36:59,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:37:00,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134933 states. [2020-10-15 19:37:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134933 to 40832. [2020-10-15 19:37:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40832 states. [2020-10-15 19:37:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40832 states to 40832 states and 215375 transitions. [2020-10-15 19:37:02,987 INFO L78 Accepts]: Start accepts. Automaton has 40832 states and 215375 transitions. Word has length 29 [2020-10-15 19:37:02,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:37:02,987 INFO L481 AbstractCegarLoop]: Abstraction has 40832 states and 215375 transitions. [2020-10-15 19:37:02,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:37:02,987 INFO L276 IsEmpty]: Start isEmpty. Operand 40832 states and 215375 transitions. [2020-10-15 19:37:02,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:37:02,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:37:02,996 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:37:03,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:37:03,204 INFO L429 AbstractCegarLoop]: === Iteration 98 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:37:03,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:37:03,204 INFO L82 PathProgramCache]: Analyzing trace with hash 868350578, now seen corresponding path program 4 times [2020-10-15 19:37:03,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:37:03,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500620849] [2020-10-15 19:37:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:37:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:37:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:37:03,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500620849] [2020-10-15 19:37:03,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140314970] [2020-10-15 19:37:03,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:37:03,385 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:37:03,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:37:03,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:37:03,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:37:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 19:37:03,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:37:03,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:37:03,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518972743] [2020-10-15 19:37:03,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:37:03,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:37:03,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:37:03,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:37:03,550 INFO L87 Difference]: Start difference. First operand 40832 states and 215375 transitions. Second operand 16 states. [2020-10-15 19:37:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:37:05,863 INFO L93 Difference]: Finished difference Result 133675 states and 619010 transitions. [2020-10-15 19:37:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:37:05,864 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 19:37:05,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:37:06,258 INFO L225 Difference]: With dead ends: 133675 [2020-10-15 19:37:06,258 INFO L226 Difference]: Without dead ends: 133616 [2020-10-15 19:37:06,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:37:07,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133616 states. [2020-10-15 19:37:08,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133616 to 40130. [2020-10-15 19:37:08,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40130 states. [2020-10-15 19:37:09,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40130 states to 40130 states and 211659 transitions. [2020-10-15 19:37:09,121 INFO L78 Accepts]: Start accepts. Automaton has 40130 states and 211659 transitions. Word has length 29 [2020-10-15 19:37:09,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:37:09,121 INFO L481 AbstractCegarLoop]: Abstraction has 40130 states and 211659 transitions. [2020-10-15 19:37:09,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:37:09,121 INFO L276 IsEmpty]: Start isEmpty. Operand 40130 states and 211659 transitions. [2020-10-15 19:37:09,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:37:09,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:37:09,129 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:37:09,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:37:09,336 INFO L429 AbstractCegarLoop]: === Iteration 99 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:37:09,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:37:09,336 INFO L82 PathProgramCache]: Analyzing trace with hash 350641582, now seen corresponding path program 1 times [2020-10-15 19:37:09,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:37:09,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030197091] [2020-10-15 19:37:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:37:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:37:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-15 19:37:09,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030197091] [2020-10-15 19:37:09,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:37:09,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:37:09,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349827585] [2020-10-15 19:37:09,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:37:09,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:37:09,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:37:09,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:37:09,375 INFO L87 Difference]: Start difference. First operand 40130 states and 211659 transitions. Second operand 5 states. [2020-10-15 19:37:09,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:37:09,975 INFO L93 Difference]: Finished difference Result 67092 states and 345298 transitions. [2020-10-15 19:37:09,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:37:09,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-15 19:37:09,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:37:10,206 INFO L225 Difference]: With dead ends: 67092 [2020-10-15 19:37:10,207 INFO L226 Difference]: Without dead ends: 67028 [2020-10-15 19:37:10,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:37:11,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67028 states. [2020-10-15 19:37:12,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67028 to 49403. [2020-10-15 19:37:12,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49403 states. [2020-10-15 19:37:12,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49403 states to 49403 states and 260758 transitions. [2020-10-15 19:37:12,644 INFO L78 Accepts]: Start accepts. Automaton has 49403 states and 260758 transitions. Word has length 29 [2020-10-15 19:37:12,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:37:12,645 INFO L481 AbstractCegarLoop]: Abstraction has 49403 states and 260758 transitions. [2020-10-15 19:37:12,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:37:12,645 INFO L276 IsEmpty]: Start isEmpty. Operand 49403 states and 260758 transitions. [2020-10-15 19:37:12,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:37:12,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:37:12,653 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:37:12,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2020-10-15 19:37:12,653 INFO L429 AbstractCegarLoop]: === Iteration 100 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:37:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:37:12,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1691122699, now seen corresponding path program 5 times [2020-10-15 19:37:12,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:37:12,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676126928] [2020-10-15 19:37:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:37:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:37:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:37:12,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676126928] [2020-10-15 19:37:12,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:37:12,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:37:12,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553065509] [2020-10-15 19:37:12,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:37:12,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:37:12,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:37:12,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:37:12,730 INFO L87 Difference]: Start difference. First operand 49403 states and 260758 transitions. Second operand 9 states. [2020-10-15 19:37:14,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:37:14,708 INFO L93 Difference]: Finished difference Result 158544 states and 742820 transitions. [2020-10-15 19:37:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:37:14,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 19:37:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:37:15,238 INFO L225 Difference]: With dead ends: 158544 [2020-10-15 19:37:15,238 INFO L226 Difference]: Without dead ends: 158488 [2020-10-15 19:37:15,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:37:16,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158488 states. [2020-10-15 19:37:18,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158488 to 49281. [2020-10-15 19:37:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49281 states. [2020-10-15 19:37:18,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49281 states to 49281 states and 259845 transitions. [2020-10-15 19:37:18,792 INFO L78 Accepts]: Start accepts. Automaton has 49281 states and 259845 transitions. Word has length 29 [2020-10-15 19:37:18,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:37:18,792 INFO L481 AbstractCegarLoop]: Abstraction has 49281 states and 259845 transitions. [2020-10-15 19:37:18,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:37:18,792 INFO L276 IsEmpty]: Start isEmpty. Operand 49281 states and 259845 transitions. [2020-10-15 19:37:18,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:37:18,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:37:18,800 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:37:18,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2020-10-15 19:37:18,801 INFO L429 AbstractCegarLoop]: === Iteration 101 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:37:18,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:37:18,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1691106300, now seen corresponding path program 5 times [2020-10-15 19:37:18,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:37:18,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763602988] [2020-10-15 19:37:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:37:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:37:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:37:18,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763602988] [2020-10-15 19:37:18,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:37:18,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:37:18,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033505787] [2020-10-15 19:37:18,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:37:18,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:37:18,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:37:18,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:37:18,879 INFO L87 Difference]: Start difference. First operand 49281 states and 259845 transitions. Second operand 9 states. [2020-10-15 19:37:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:37:21,507 INFO L93 Difference]: Finished difference Result 156182 states and 731010 transitions. [2020-10-15 19:37:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:37:21,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 19:37:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:37:21,962 INFO L225 Difference]: With dead ends: 156182 [2020-10-15 19:37:21,963 INFO L226 Difference]: Without dead ends: 156126 [2020-10-15 19:37:21,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:37:23,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156126 states. [2020-10-15 19:37:25,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156126 to 48971. [2020-10-15 19:37:25,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48971 states. [2020-10-15 19:37:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48971 states to 48971 states and 257988 transitions. [2020-10-15 19:37:25,246 INFO L78 Accepts]: Start accepts. Automaton has 48971 states and 257988 transitions. Word has length 29 [2020-10-15 19:37:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:37:25,247 INFO L481 AbstractCegarLoop]: Abstraction has 48971 states and 257988 transitions. [2020-10-15 19:37:25,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:37:25,247 INFO L276 IsEmpty]: Start isEmpty. Operand 48971 states and 257988 transitions. [2020-10-15 19:37:25,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:37:25,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:37:25,255 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:37:25,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2020-10-15 19:37:25,255 INFO L429 AbstractCegarLoop]: === Iteration 102 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:37:25,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:37:25,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1691126667, now seen corresponding path program 5 times [2020-10-15 19:37:25,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:37:25,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222865869] [2020-10-15 19:37:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:37:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:37:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:37:25,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222865869] [2020-10-15 19:37:25,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:37:25,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:37:25,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076495309] [2020-10-15 19:37:25,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:37:25,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:37:25,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:37:25,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:37:25,332 INFO L87 Difference]: Start difference. First operand 48971 states and 257988 transitions. Second operand 9 states. [2020-10-15 19:37:27,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:37:27,286 INFO L93 Difference]: Finished difference Result 153730 states and 719178 transitions. [2020-10-15 19:37:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:37:27,287 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 19:37:27,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:37:27,755 INFO L225 Difference]: With dead ends: 153730 [2020-10-15 19:37:27,755 INFO L226 Difference]: Without dead ends: 153674 [2020-10-15 19:37:27,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:37:29,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153674 states. [2020-10-15 19:37:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153674 to 48427. [2020-10-15 19:37:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48427 states. [2020-10-15 19:37:31,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48427 states to 48427 states and 254935 transitions. [2020-10-15 19:37:31,971 INFO L78 Accepts]: Start accepts. Automaton has 48427 states and 254935 transitions. Word has length 29 [2020-10-15 19:37:31,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:37:31,971 INFO L481 AbstractCegarLoop]: Abstraction has 48427 states and 254935 transitions. [2020-10-15 19:37:31,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:37:31,971 INFO L276 IsEmpty]: Start isEmpty. Operand 48427 states and 254935 transitions. [2020-10-15 19:37:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:37:31,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:37:31,979 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:37:31,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2020-10-15 19:37:31,979 INFO L429 AbstractCegarLoop]: === Iteration 103 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:37:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:37:31,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1680171019, now seen corresponding path program 6 times [2020-10-15 19:37:31,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:37:31,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585218701] [2020-10-15 19:37:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:37:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:37:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:37:32,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585218701] [2020-10-15 19:37:32,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:37:32,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:37:32,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910262786] [2020-10-15 19:37:32,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:37:32,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:37:32,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:37:32,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:37:32,061 INFO L87 Difference]: Start difference. First operand 48427 states and 254935 transitions. Second operand 9 states. [2020-10-15 19:37:33,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:37:33,991 INFO L93 Difference]: Finished difference Result 153132 states and 715258 transitions. [2020-10-15 19:37:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:37:33,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 19:37:33,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:37:34,482 INFO L225 Difference]: With dead ends: 153132 [2020-10-15 19:37:34,482 INFO L226 Difference]: Without dead ends: 153061 [2020-10-15 19:37:34,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:37:35,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153061 states. [2020-10-15 19:37:37,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153061 to 47511. [2020-10-15 19:37:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47511 states. [2020-10-15 19:37:38,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47511 states to 47511 states and 249853 transitions. [2020-10-15 19:37:38,013 INFO L78 Accepts]: Start accepts. Automaton has 47511 states and 249853 transitions. Word has length 29 [2020-10-15 19:37:38,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:37:38,013 INFO L481 AbstractCegarLoop]: Abstraction has 47511 states and 249853 transitions. [2020-10-15 19:37:38,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:37:38,013 INFO L276 IsEmpty]: Start isEmpty. Operand 47511 states and 249853 transitions. [2020-10-15 19:37:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:37:38,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:37:38,022 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:37:38,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2020-10-15 19:37:38,022 INFO L429 AbstractCegarLoop]: === Iteration 104 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:37:38,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:37:38,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1680143212, now seen corresponding path program 5 times [2020-10-15 19:37:38,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:37:38,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430110403] [2020-10-15 19:37:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:37:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:37:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:37:38,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430110403] [2020-10-15 19:37:38,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:37:38,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:37:38,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457238712] [2020-10-15 19:37:38,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:37:38,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:37:38,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:37:38,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:37:38,123 INFO L87 Difference]: Start difference. First operand 47511 states and 249853 transitions. Second operand 9 states. [2020-10-15 19:37:40,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:37:40,227 INFO L93 Difference]: Finished difference Result 152943 states and 713344 transitions. [2020-10-15 19:37:40,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:37:40,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 19:37:40,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:37:41,560 INFO L225 Difference]: With dead ends: 152943 [2020-10-15 19:37:41,561 INFO L226 Difference]: Without dead ends: 152887 [2020-10-15 19:37:41,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:37:43,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152887 states. [2020-10-15 19:37:44,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152887 to 47324. [2020-10-15 19:37:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47324 states. [2020-10-15 19:37:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47324 states to 47324 states and 248753 transitions. [2020-10-15 19:37:44,756 INFO L78 Accepts]: Start accepts. Automaton has 47324 states and 248753 transitions. Word has length 29 [2020-10-15 19:37:44,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:37:44,757 INFO L481 AbstractCegarLoop]: Abstraction has 47324 states and 248753 transitions. [2020-10-15 19:37:44,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:37:44,757 INFO L276 IsEmpty]: Start isEmpty. Operand 47324 states and 248753 transitions. [2020-10-15 19:37:44,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:37:44,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:37:44,765 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:37:44,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2020-10-15 19:37:44,765 INFO L429 AbstractCegarLoop]: === Iteration 105 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:37:44,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:37:44,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1680163579, now seen corresponding path program 5 times [2020-10-15 19:37:44,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:37:44,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564797008] [2020-10-15 19:37:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:37:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:37:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:37:44,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564797008] [2020-10-15 19:37:44,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:37:44,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:37:44,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670476319] [2020-10-15 19:37:44,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:37:44,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:37:44,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:37:44,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:37:44,844 INFO L87 Difference]: Start difference. First operand 47324 states and 248753 transitions. Second operand 9 states. [2020-10-15 19:37:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:37:46,857 INFO L93 Difference]: Finished difference Result 150780 states and 703178 transitions. [2020-10-15 19:37:46,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:37:46,858 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 19:37:46,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:37:47,308 INFO L225 Difference]: With dead ends: 150780 [2020-10-15 19:37:47,309 INFO L226 Difference]: Without dead ends: 150724 [2020-10-15 19:37:47,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:37:48,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150724 states. [2020-10-15 19:37:51,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150724 to 46868. [2020-10-15 19:37:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46868 states. [2020-10-15 19:37:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46868 states to 46868 states and 246275 transitions. [2020-10-15 19:37:51,660 INFO L78 Accepts]: Start accepts. Automaton has 46868 states and 246275 transitions. Word has length 29 [2020-10-15 19:37:51,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:37:51,660 INFO L481 AbstractCegarLoop]: Abstraction has 46868 states and 246275 transitions. [2020-10-15 19:37:51,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:37:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 46868 states and 246275 transitions. [2020-10-15 19:37:51,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:37:51,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:37:51,669 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:37:51,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2020-10-15 19:37:51,669 INFO L429 AbstractCegarLoop]: === Iteration 106 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:37:51,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:37:51,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1664411580, now seen corresponding path program 6 times [2020-10-15 19:37:51,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:37:51,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038144444] [2020-10-15 19:37:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:37:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:37:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:37:51,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038144444] [2020-10-15 19:37:51,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:37:51,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:37:51,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898772299] [2020-10-15 19:37:51,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:37:51,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:37:51,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:37:51,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:37:51,753 INFO L87 Difference]: Start difference. First operand 46868 states and 246275 transitions. Second operand 9 states. [2020-10-15 19:37:53,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:37:53,728 INFO L93 Difference]: Finished difference Result 150331 states and 700262 transitions. [2020-10-15 19:37:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:37:53,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 19:37:53,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:37:54,184 INFO L225 Difference]: With dead ends: 150331 [2020-10-15 19:37:54,184 INFO L226 Difference]: Without dead ends: 150260 [2020-10-15 19:37:54,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:37:55,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150260 states. [2020-10-15 19:37:57,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150260 to 46219. [2020-10-15 19:37:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46219 states. [2020-10-15 19:37:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46219 states to 46219 states and 242740 transitions. [2020-10-15 19:37:57,460 INFO L78 Accepts]: Start accepts. Automaton has 46219 states and 242740 transitions. Word has length 29 [2020-10-15 19:37:57,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:37:57,460 INFO L481 AbstractCegarLoop]: Abstraction has 46219 states and 242740 transitions. [2020-10-15 19:37:57,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:37:57,460 INFO L276 IsEmpty]: Start isEmpty. Operand 46219 states and 242740 transitions. [2020-10-15 19:37:57,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:37:57,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:37:57,468 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:37:57,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2020-10-15 19:37:57,468 INFO L429 AbstractCegarLoop]: === Iteration 107 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:37:57,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:37:57,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1664400172, now seen corresponding path program 6 times [2020-10-15 19:37:57,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:37:57,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537522704] [2020-10-15 19:37:57,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:37:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:37:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:37:57,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537522704] [2020-10-15 19:37:57,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:37:57,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:37:57,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118156914] [2020-10-15 19:37:57,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:37:57,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:37:57,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:37:57,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:37:57,548 INFO L87 Difference]: Start difference. First operand 46219 states and 242740 transitions. Second operand 9 states. [2020-10-15 19:37:59,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:37:59,609 INFO L93 Difference]: Finished difference Result 148950 states and 693501 transitions. [2020-10-15 19:37:59,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:37:59,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 19:37:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:00,032 INFO L225 Difference]: With dead ends: 148950 [2020-10-15 19:38:00,032 INFO L226 Difference]: Without dead ends: 148879 [2020-10-15 19:38:00,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:38:02,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148879 states. [2020-10-15 19:38:03,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148879 to 45332. [2020-10-15 19:38:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45332 states. [2020-10-15 19:38:03,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45332 states to 45332 states and 238000 transitions. [2020-10-15 19:38:03,901 INFO L78 Accepts]: Start accepts. Automaton has 45332 states and 238000 transitions. Word has length 29 [2020-10-15 19:38:03,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:03,901 INFO L481 AbstractCegarLoop]: Abstraction has 45332 states and 238000 transitions. [2020-10-15 19:38:03,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:38:03,901 INFO L276 IsEmpty]: Start isEmpty. Operand 45332 states and 238000 transitions. [2020-10-15 19:38:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:38:03,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:03,909 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:03,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2020-10-15 19:38:03,909 INFO L429 AbstractCegarLoop]: === Iteration 108 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:38:03,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:03,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1664404140, now seen corresponding path program 5 times [2020-10-15 19:38:03,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:03,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505414024] [2020-10-15 19:38:03,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:38:03,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505414024] [2020-10-15 19:38:03,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:03,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:38:03,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903035283] [2020-10-15 19:38:03,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:38:03,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:03,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:38:03,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:38:03,996 INFO L87 Difference]: Start difference. First operand 45332 states and 238000 transitions. Second operand 9 states. [2020-10-15 19:38:06,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:06,086 INFO L93 Difference]: Finished difference Result 148687 states and 692117 transitions. [2020-10-15 19:38:06,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:38:06,087 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 19:38:06,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:06,544 INFO L225 Difference]: With dead ends: 148687 [2020-10-15 19:38:06,544 INFO L226 Difference]: Without dead ends: 148631 [2020-10-15 19:38:06,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:38:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148631 states. [2020-10-15 19:38:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148631 to 45016. [2020-10-15 19:38:09,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45016 states. [2020-10-15 19:38:09,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45016 states to 45016 states and 236327 transitions. [2020-10-15 19:38:09,757 INFO L78 Accepts]: Start accepts. Automaton has 45016 states and 236327 transitions. Word has length 29 [2020-10-15 19:38:09,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:09,757 INFO L481 AbstractCegarLoop]: Abstraction has 45016 states and 236327 transitions. [2020-10-15 19:38:09,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:38:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand 45016 states and 236327 transitions. [2020-10-15 19:38:09,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:38:09,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:09,765 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:09,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2020-10-15 19:38:09,766 INFO L429 AbstractCegarLoop]: === Iteration 109 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:38:09,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:09,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1683984267, now seen corresponding path program 6 times [2020-10-15 19:38:09,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:09,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386858881] [2020-10-15 19:38:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:38:09,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386858881] [2020-10-15 19:38:09,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:09,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:38:09,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779805743] [2020-10-15 19:38:09,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:38:09,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:09,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:38:09,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:38:09,845 INFO L87 Difference]: Start difference. First operand 45016 states and 236327 transitions. Second operand 9 states. [2020-10-15 19:38:12,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:12,142 INFO L93 Difference]: Finished difference Result 147978 states and 688634 transitions. [2020-10-15 19:38:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:38:12,143 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 19:38:12,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:12,594 INFO L225 Difference]: With dead ends: 147978 [2020-10-15 19:38:12,594 INFO L226 Difference]: Without dead ends: 147907 [2020-10-15 19:38:12,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:38:14,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147907 states. [2020-10-15 19:38:15,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147907 to 44547. [2020-10-15 19:38:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44547 states. [2020-10-15 19:38:15,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44547 states to 44547 states and 233827 transitions. [2020-10-15 19:38:15,826 INFO L78 Accepts]: Start accepts. Automaton has 44547 states and 233827 transitions. Word has length 29 [2020-10-15 19:38:15,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:15,826 INFO L481 AbstractCegarLoop]: Abstraction has 44547 states and 233827 transitions. [2020-10-15 19:38:15,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:38:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 44547 states and 233827 transitions. [2020-10-15 19:38:15,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:38:15,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:15,834 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:15,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2020-10-15 19:38:15,834 INFO L429 AbstractCegarLoop]: === Iteration 110 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:38:15,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:15,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1683972859, now seen corresponding path program 6 times [2020-10-15 19:38:15,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:15,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476741135] [2020-10-15 19:38:15,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:15,913 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:38:15,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476741135] [2020-10-15 19:38:15,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:15,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:38:15,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476380634] [2020-10-15 19:38:15,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:38:15,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:15,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:38:15,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:38:15,915 INFO L87 Difference]: Start difference. First operand 44547 states and 233827 transitions. Second operand 9 states. [2020-10-15 19:38:17,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:17,859 INFO L93 Difference]: Finished difference Result 146514 states and 681741 transitions. [2020-10-15 19:38:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:38:17,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 19:38:17,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:18,284 INFO L225 Difference]: With dead ends: 146514 [2020-10-15 19:38:18,284 INFO L226 Difference]: Without dead ends: 146443 [2020-10-15 19:38:18,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:38:19,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146443 states. [2020-10-15 19:38:22,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146443 to 43886. [2020-10-15 19:38:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43886 states. [2020-10-15 19:38:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43886 states to 43886 states and 230374 transitions. [2020-10-15 19:38:22,260 INFO L78 Accepts]: Start accepts. Automaton has 43886 states and 230374 transitions. Word has length 29 [2020-10-15 19:38:22,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:22,260 INFO L481 AbstractCegarLoop]: Abstraction has 43886 states and 230374 transitions. [2020-10-15 19:38:22,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:38:22,260 INFO L276 IsEmpty]: Start isEmpty. Operand 43886 states and 230374 transitions. [2020-10-15 19:38:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 19:38:22,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:22,268 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:22,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2020-10-15 19:38:22,268 INFO L429 AbstractCegarLoop]: === Iteration 111 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:38:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:22,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1683956460, now seen corresponding path program 6 times [2020-10-15 19:38:22,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:22,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356535143] [2020-10-15 19:38:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 19:38:22,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356535143] [2020-10-15 19:38:22,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:22,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 19:38:22,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562722894] [2020-10-15 19:38:22,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:38:22,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:22,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:38:22,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:38:22,351 INFO L87 Difference]: Start difference. First operand 43886 states and 230374 transitions. Second operand 9 states. [2020-10-15 19:38:24,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:24,424 INFO L93 Difference]: Finished difference Result 145269 states and 675718 transitions. [2020-10-15 19:38:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:38:24,426 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 19:38:24,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:24,869 INFO L225 Difference]: With dead ends: 145269 [2020-10-15 19:38:24,870 INFO L226 Difference]: Without dead ends: 145198 [2020-10-15 19:38:24,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:38:26,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145198 states. [2020-10-15 19:38:27,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145198 to 42813. [2020-10-15 19:38:27,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42813 states. [2020-10-15 19:38:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42813 states to 42813 states and 224792 transitions. [2020-10-15 19:38:28,021 INFO L78 Accepts]: Start accepts. Automaton has 42813 states and 224792 transitions. Word has length 29 [2020-10-15 19:38:28,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:28,021 INFO L481 AbstractCegarLoop]: Abstraction has 42813 states and 224792 transitions. [2020-10-15 19:38:28,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:38:28,021 INFO L276 IsEmpty]: Start isEmpty. Operand 42813 states and 224792 transitions. [2020-10-15 19:38:28,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 19:38:28,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:28,031 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:28,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2020-10-15 19:38:28,031 INFO L429 AbstractCegarLoop]: === Iteration 112 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:38:28,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:28,032 INFO L82 PathProgramCache]: Analyzing trace with hash -2020768925, now seen corresponding path program 1 times [2020-10-15 19:38:28,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:28,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955233055] [2020-10-15 19:38:28,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:38:28,037 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:38:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:38:28,041 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:38:28,048 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:38:28,049 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:38:28,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2020-10-15 19:38:28,049 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 19:38:28,049 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 19:38:28,050 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-15 19:38:28,064 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,065 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,066 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,066 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,067 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,067 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,068 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,068 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,068 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,068 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,068 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,068 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,068 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,068 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,068 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,069 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,069 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,069 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,070 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,076 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,076 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,076 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,076 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,076 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,077 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,077 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,078 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,078 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,078 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,079 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,079 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,079 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,079 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,079 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,082 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,082 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,084 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,084 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,084 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,084 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,084 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,085 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,086 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,086 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,086 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,086 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:28,101 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-15 19:38:28,101 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:38:28,101 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:38:28,101 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:38:28,102 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:38:28,102 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:38:28,102 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:38:28,102 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:38:28,102 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:38:28,104 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:38:28,104 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 154 transitions, 462 flow [2020-10-15 19:38:28,105 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 154 transitions, 462 flow [2020-10-15 19:38:28,105 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 175 places, 154 transitions, 462 flow [2020-10-15 19:38:28,125 INFO L129 PetriNetUnfolder]: 10/194 cut-off events. [2020-10-15 19:38:28,126 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-15 19:38:28,128 INFO L80 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 194 events. 10/194 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 324 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 238. Up to 16 conditions per place. [2020-10-15 19:38:28,136 INFO L117 LiptonReduction]: Number of co-enabled transitions 3460 [2020-10-15 19:38:31,102 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-15 19:38:31,533 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-15 19:38:31,691 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-15 19:38:31,901 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-15 19:38:32,002 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-15 19:38:32,013 INFO L132 LiptonReduction]: Checked pairs total: 6416 [2020-10-15 19:38:32,013 INFO L134 LiptonReduction]: Total number of compositions: 141 [2020-10-15 19:38:32,013 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 51 transitions, 256 flow [2020-10-15 19:38:42,049 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 55763 states. [2020-10-15 19:38:42,050 INFO L276 IsEmpty]: Start isEmpty. Operand 55763 states. [2020-10-15 19:38:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 19:38:42,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:42,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 19:38:42,050 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:38:42,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:42,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1607054, now seen corresponding path program 1 times [2020-10-15 19:38:42,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:42,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300971891] [2020-10-15 19:38:42,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:42,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300971891] [2020-10-15 19:38:42,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:42,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 19:38:42,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992284011] [2020-10-15 19:38:42,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 19:38:42,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:42,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 19:38:42,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:38:42,065 INFO L87 Difference]: Start difference. First operand 55763 states. Second operand 3 states. [2020-10-15 19:38:42,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:42,478 INFO L93 Difference]: Finished difference Result 54360 states and 318970 transitions. [2020-10-15 19:38:42,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 19:38:42,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 19:38:42,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:42,654 INFO L225 Difference]: With dead ends: 54360 [2020-10-15 19:38:42,654 INFO L226 Difference]: Without dead ends: 51079 [2020-10-15 19:38:42,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 19:38:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51079 states. [2020-10-15 19:38:49,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51079 to 51079. [2020-10-15 19:38:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51079 states. [2020-10-15 19:38:49,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51079 states to 51079 states and 298193 transitions. [2020-10-15 19:38:49,873 INFO L78 Accepts]: Start accepts. Automaton has 51079 states and 298193 transitions. Word has length 3 [2020-10-15 19:38:49,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:49,873 INFO L481 AbstractCegarLoop]: Abstraction has 51079 states and 298193 transitions. [2020-10-15 19:38:49,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 19:38:49,873 INFO L276 IsEmpty]: Start isEmpty. Operand 51079 states and 298193 transitions. [2020-10-15 19:38:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 19:38:49,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:49,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:49,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2020-10-15 19:38:49,874 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:38:49,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:49,874 INFO L82 PathProgramCache]: Analyzing trace with hash -993793982, now seen corresponding path program 1 times [2020-10-15 19:38:49,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:49,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159187417] [2020-10-15 19:38:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:49,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159187417] [2020-10-15 19:38:49,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:49,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:38:49,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243033503] [2020-10-15 19:38:49,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:38:49,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:49,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:38:49,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:38:49,908 INFO L87 Difference]: Start difference. First operand 51079 states and 298193 transitions. Second operand 5 states. [2020-10-15 19:38:50,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:50,644 INFO L93 Difference]: Finished difference Result 96937 states and 538177 transitions. [2020-10-15 19:38:50,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:38:50,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 19:38:50,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:50,960 INFO L225 Difference]: With dead ends: 96937 [2020-10-15 19:38:50,960 INFO L226 Difference]: Without dead ends: 96928 [2020-10-15 19:38:50,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:38:54,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96928 states. [2020-10-15 19:38:56,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96928 to 61361. [2020-10-15 19:38:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61361 states. [2020-10-15 19:38:56,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61361 states to 61361 states and 361700 transitions. [2020-10-15 19:38:56,466 INFO L78 Accepts]: Start accepts. Automaton has 61361 states and 361700 transitions. Word has length 9 [2020-10-15 19:38:56,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:56,467 INFO L481 AbstractCegarLoop]: Abstraction has 61361 states and 361700 transitions. [2020-10-15 19:38:56,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:38:56,467 INFO L276 IsEmpty]: Start isEmpty. Operand 61361 states and 361700 transitions. [2020-10-15 19:38:56,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:38:56,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:56,467 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:56,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2020-10-15 19:38:56,467 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:38:56,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:56,468 INFO L82 PathProgramCache]: Analyzing trace with hash -250834384, now seen corresponding path program 1 times [2020-10-15 19:38:56,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:56,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705838493] [2020-10-15 19:38:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 19:38:56,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705838493] [2020-10-15 19:38:56,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:56,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:38:56,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814905217] [2020-10-15 19:38:56,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:38:56,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:56,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:38:56,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:38:56,506 INFO L87 Difference]: Start difference. First operand 61361 states and 361700 transitions. Second operand 5 states. [2020-10-15 19:38:58,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:58,255 INFO L93 Difference]: Finished difference Result 115105 states and 647870 transitions. [2020-10-15 19:38:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:38:58,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 19:38:58,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:58,654 INFO L225 Difference]: With dead ends: 115105 [2020-10-15 19:38:58,654 INFO L226 Difference]: Without dead ends: 115086 [2020-10-15 19:38:58,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:39:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115086 states. [2020-10-15 19:39:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115086 to 74729. [2020-10-15 19:39:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74729 states. [2020-10-15 19:39:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74729 states to 74729 states and 446528 transitions. [2020-10-15 19:39:04,915 INFO L78 Accepts]: Start accepts. Automaton has 74729 states and 446528 transitions. Word has length 13 [2020-10-15 19:39:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:39:04,915 INFO L481 AbstractCegarLoop]: Abstraction has 74729 states and 446528 transitions. [2020-10-15 19:39:04,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:39:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 74729 states and 446528 transitions. [2020-10-15 19:39:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 19:39:04,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:39:04,916 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:39:04,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2020-10-15 19:39:04,916 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:39:04,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:39:04,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1217517960, now seen corresponding path program 1 times [2020-10-15 19:39:04,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:39:04,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871795707] [2020-10-15 19:39:04,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:39:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:39:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:39:04,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871795707] [2020-10-15 19:39:04,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668476887] [2020-10-15 19:39:04,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:39:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:39:09,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:39:09,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:39:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:39:09,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:39:09,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:39:09,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992206286] [2020-10-15 19:39:09,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:39:09,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:39:09,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:39:09,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:39:09,969 INFO L87 Difference]: Start difference. First operand 74729 states and 446528 transitions. Second operand 12 states. [2020-10-15 19:39:11,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:39:11,604 INFO L93 Difference]: Finished difference Result 183405 states and 977356 transitions. [2020-10-15 19:39:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:39:11,605 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-15 19:39:11,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2020-10-15 19:39:12,196 INFO L225 Difference]: With dead ends: 183405 [2020-10-15 19:39:12,196 INFO L226 Difference]: Without dead ends: 183386 [2020-10-15 19:39:12,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown