/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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 13:49:10,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 13:49:10,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 13:49:10,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 13:49:10,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 13:49:10,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 13:49:10,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 13:49:10,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 13:49:10,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 13:49:10,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 13:49:10,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 13:49:10,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 13:49:10,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 13:49:10,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 13:49:10,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 13:49:10,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 13:49:10,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 13:49:10,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 13:49:10,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 13:49:10,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 13:49:10,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 13:49:10,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 13:49:10,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 13:49:10,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 13:49:10,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 13:49:10,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 13:49:10,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 13:49:10,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 13:49:10,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 13:49:10,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 13:49:10,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 13:49:10,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 13:49:10,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 13:49:10,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 13:49:10,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 13:49:10,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 13:49:10,744 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 [2020-10-09 13:49:10,786 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 13:49:10,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 13:49:10,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 13:49:10,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 13:49:10,789 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 13:49:10,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 13:49:10,790 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 13:49:10,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 13:49:10,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 13:49:10,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 13:49:10,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 13:49:10,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 13:49:10,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 13:49:10,792 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 13:49:10,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 13:49:10,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 13:49:10,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 13:49:10,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 13:49:10,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 13:49:10,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 13:49:10,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 13:49:10,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 13:49:10,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 13:49:10,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 13:49:10,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 13:49:10,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 13:49:10,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 13:49:10,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 13:49:10,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 13:49:10,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 13:49:11,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 13:49:11,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 13:49:11,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 13:49:11,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 13:49:11,100 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 13:49:11,100 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-09 13:49:11,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b2836fef/36d4c646b1d14991bd1894de8e0c76c6/FLAG0da7728da [2020-10-09 13:49:11,605 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 13:49:11,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-09 13:49:11,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b2836fef/36d4c646b1d14991bd1894de8e0c76c6/FLAG0da7728da [2020-10-09 13:49:11,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b2836fef/36d4c646b1d14991bd1894de8e0c76c6 [2020-10-09 13:49:11,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 13:49:11,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 13:49:11,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 13:49:11,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 13:49:11,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 13:49:11,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 01:49:11" (1/1) ... [2020-10-09 13:49:11,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c7b018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:49:11, skipping insertion in model container [2020-10-09 13:49:11,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 01:49:11" (1/1) ... [2020-10-09 13:49:11,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 13:49:12,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 13:49:12,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 13:49:12,480 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 13:49:12,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 13:49:12,619 INFO L208 MainTranslator]: Completed translation [2020-10-09 13:49:12,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:49:12 WrapperNode [2020-10-09 13:49:12,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 13:49:12,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 13:49:12,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 13:49:12,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 13:49:12,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:49:12" (1/1) ... [2020-10-09 13:49:12,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:49:12" (1/1) ... [2020-10-09 13:49:12,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 13:49:12,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 13:49:12,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 13:49:12,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 13:49:12,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:49:12" (1/1) ... [2020-10-09 13:49:12,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:49:12" (1/1) ... [2020-10-09 13:49:12,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:49:12" (1/1) ... [2020-10-09 13:49:12,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:49:12" (1/1) ... [2020-10-09 13:49:12,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:49:12" (1/1) ... [2020-10-09 13:49:12,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:49:12" (1/1) ... [2020-10-09 13:49:12,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:49:12" (1/1) ... [2020-10-09 13:49:12,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 13:49:12,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 13:49:12,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 13:49:12,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 13:49:12,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:49:12" (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 [2020-10-09 13:49:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-09 13:49:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-09 13:49:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-09 13:49:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-09 13:49:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 13:49:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 13:49:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 13:49:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 13:49:12,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 13:49:12,789 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 13:49:13,142 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 13:49:13,142 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-09 13:49:13,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 01:49:13 BoogieIcfgContainer [2020-10-09 13:49:13,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 13:49:13,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 13:49:13,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 13:49:13,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 13:49:13,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 01:49:11" (1/3) ... [2020-10-09 13:49:13,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a240485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 01:49:13, skipping insertion in model container [2020-10-09 13:49:13,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:49:12" (2/3) ... [2020-10-09 13:49:13,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a240485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 01:49:13, skipping insertion in model container [2020-10-09 13:49:13,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 01:49:13" (3/3) ... [2020-10-09 13:49:13,153 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2020-10-09 13:49:13,165 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 13:49:13,165 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 13:49:13,171 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 13:49:13,172 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 13:49:13,198 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,198 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,198 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,206 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,207 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,207 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,207 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,207 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,213 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,213 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,214 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,214 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,214 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,214 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:13,233 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 13:49:13,250 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:49:13,250 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:49:13,250 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:49:13,250 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:49:13,251 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:49:13,251 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:49:13,251 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:49:13,251 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:49:13,264 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:49:13,267 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-09 13:49:13,270 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-09 13:49:13,272 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-10-09 13:49:13,318 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-09 13:49:13,319 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 13:49:13,327 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. [2020-10-09 13:49:13,332 INFO L117 LiptonReduction]: Number of co-enabled transitions 592 [2020-10-09 13:49:14,766 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-09 13:49:15,015 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-09 13:49:15,086 INFO L132 LiptonReduction]: Checked pairs total: 576 [2020-10-09 13:49:15,087 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-09 13:49:15,094 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-09 13:49:15,104 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-09 13:49:15,106 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-09 13:49:15,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-09 13:49:15,112 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:15,113 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-09 13:49:15,114 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-09 13:49:15,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:15,119 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-10-09 13:49:15,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:15,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769978262] [2020-10-09 13:49:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:15,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769978262] [2020-10-09 13:49:15,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:15,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-09 13:49:15,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218698153] [2020-10-09 13:49:15,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:49:15,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:15,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:49:15,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:49:15,349 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-09 13:49:15,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:15,390 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-09 13:49:15,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:49:15,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-09 13:49:15,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:15,406 INFO L225 Difference]: With dead ends: 35 [2020-10-09 13:49:15,406 INFO L226 Difference]: Without dead ends: 31 [2020-10-09 13:49:15,408 INFO L673 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 [2020-10-09 13:49:15,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-09 13:49:15,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-09 13:49:15,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-09 13:49:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-09 13:49:15,459 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-09 13:49:15,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:15,460 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-09 13:49:15,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:49:15,461 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-09 13:49:15,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-09 13:49:15,462 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:15,462 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:15,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 13:49:15,463 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-09 13:49:15,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:15,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-10-09 13:49:15,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:15,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895672857] [2020-10-09 13:49:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:15,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:15,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895672857] [2020-10-09 13:49:15,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:15,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:49:15,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954186029] [2020-10-09 13:49:15,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:49:15,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:15,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:49:15,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:49:15,614 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-09 13:49:15,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:15,650 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-09 13:49:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 13:49:15,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-09 13:49:15,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:15,651 INFO L225 Difference]: With dead ends: 26 [2020-10-09 13:49:15,651 INFO L226 Difference]: Without dead ends: 24 [2020-10-09 13:49:15,652 INFO L673 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 [2020-10-09 13:49:15,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-09 13:49:15,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-09 13:49:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-09 13:49:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-09 13:49:15,657 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-09 13:49:15,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:15,658 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-09 13:49:15,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:49:15,658 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-09 13:49:15,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 13:49:15,658 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:15,659 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:15,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 13:49:15,659 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-09 13:49:15,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:15,659 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-10-09 13:49:15,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:15,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499908348] [2020-10-09 13:49:15,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:49:15,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:49:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:49:15,694 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:49:15,718 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-09 13:49:15,719 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 13:49:15,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 13:49:15,719 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-09 13:49:15,721 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-09 13:49:15,721 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-09 13:49:15,731 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,731 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,733 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,733 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,739 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,740 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,740 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,743 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,744 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:15,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-09 13:49:15,763 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:49:15,763 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:49:15,763 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:49:15,763 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:49:15,763 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:49:15,763 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:49:15,764 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:49:15,764 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:49:15,767 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:49:15,768 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-09 13:49:15,768 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-09 13:49:15,769 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-10-09 13:49:15,805 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-09 13:49:15,805 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-09 13:49:15,808 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. [2020-10-09 13:49:15,811 INFO L117 LiptonReduction]: Number of co-enabled transitions 920 [2020-10-09 13:49:17,232 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-09 13:49:17,359 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-09 13:49:17,366 INFO L132 LiptonReduction]: Checked pairs total: 1122 [2020-10-09 13:49:17,366 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-09 13:49:17,366 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-09 13:49:17,380 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-09 13:49:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-09 13:49:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-09 13:49:17,381 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:17,381 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-09 13:49:17,381 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:17,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:17,382 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-10-09 13:49:17,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:17,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454622037] [2020-10-09 13:49:17,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:17,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454622037] [2020-10-09 13:49:17,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:17,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-09 13:49:17,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085987544] [2020-10-09 13:49:17,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:49:17,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:17,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:49:17,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:49:17,433 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-09 13:49:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:17,486 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-09 13:49:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:49:17,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-09 13:49:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:17,494 INFO L225 Difference]: With dead ends: 185 [2020-10-09 13:49:17,494 INFO L226 Difference]: Without dead ends: 171 [2020-10-09 13:49:17,494 INFO L673 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 [2020-10-09 13:49:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-09 13:49:17,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-09 13:49:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-09 13:49:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-09 13:49:17,539 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-09 13:49:17,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:17,539 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-09 13:49:17,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:49:17,539 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-09 13:49:17,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 13:49:17,540 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:17,540 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:17,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 13:49:17,541 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:17,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:17,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-10-09 13:49:17,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:17,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102778084] [2020-10-09 13:49:17,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:17,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102778084] [2020-10-09 13:49:17,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:17,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:17,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427281872] [2020-10-09 13:49:17,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:49:17,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:17,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:49:17,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:49:17,597 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-09 13:49:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:17,687 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-09 13:49:17,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:49:17,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-09 13:49:17,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:17,692 INFO L225 Difference]: With dead ends: 205 [2020-10-09 13:49:17,692 INFO L226 Difference]: Without dead ends: 201 [2020-10-09 13:49:17,693 INFO L673 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 [2020-10-09 13:49:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-09 13:49:17,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-09 13:49:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-09 13:49:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-09 13:49:17,713 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-09 13:49:17,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:17,714 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-09 13:49:17,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:49:17,714 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-09 13:49:17,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 13:49:17,715 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:17,715 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:17,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-09 13:49:17,716 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:17,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:17,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-10-09 13:49:17,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:17,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631163319] [2020-10-09 13:49:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:17,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631163319] [2020-10-09 13:49:17,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:17,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:17,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836666031] [2020-10-09 13:49:17,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:49:17,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:17,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:49:17,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:49:17,769 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-09 13:49:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:17,860 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-09 13:49:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:49:17,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-09 13:49:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:17,862 INFO L225 Difference]: With dead ends: 189 [2020-10-09 13:49:17,863 INFO L226 Difference]: Without dead ends: 185 [2020-10-09 13:49:17,863 INFO L673 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 [2020-10-09 13:49:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-09 13:49:17,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-09 13:49:17,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-09 13:49:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-09 13:49:17,875 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-09 13:49:17,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:17,876 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-09 13:49:17,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:49:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-09 13:49:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 13:49:17,877 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:17,878 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:17,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-09 13:49:17,878 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:17,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:17,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-10-09 13:49:17,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:17,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814495666] [2020-10-09 13:49:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:49:17,893 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:49:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:49:17,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:49:17,911 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-09 13:49:17,911 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 13:49:17,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-09 13:49:17,912 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-09 13:49:17,912 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-09 13:49:17,913 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-09 13:49:17,922 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,923 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,923 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,923 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,923 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,923 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,924 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,924 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,924 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,924 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,924 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,925 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,925 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,925 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,925 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,925 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,926 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,926 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,926 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,926 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,926 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,927 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,927 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,927 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,930 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,930 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,930 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,931 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,931 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,932 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,932 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,932 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,932 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,933 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,933 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,933 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,933 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,933 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,935 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,935 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,935 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,935 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,935 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,938 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,938 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:17,942 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-09 13:49:17,942 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:49:17,942 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:49:17,942 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:49:17,942 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:49:17,942 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:49:17,942 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:49:17,943 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:49:17,943 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:49:17,944 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:49:17,944 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-09 13:49:17,944 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-09 13:49:17,945 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-10-09 13:49:17,963 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-09 13:49:17,963 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-09 13:49:17,964 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. [2020-10-09 13:49:17,966 INFO L117 LiptonReduction]: Number of co-enabled transitions 1308 [2020-10-09 13:49:19,272 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-09 13:49:19,521 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-09 13:49:19,655 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-09 13:49:19,661 INFO L132 LiptonReduction]: Checked pairs total: 1841 [2020-10-09 13:49:19,661 INFO L134 LiptonReduction]: Total number of compositions: 79 [2020-10-09 13:49:19,662 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-09 13:49:19,687 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-09 13:49:19,688 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-09 13:49:19,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-09 13:49:19,688 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:19,688 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-09 13:49:19,688 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:19,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:19,689 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-10-09 13:49:19,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:19,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197855610] [2020-10-09 13:49:19,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:19,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:19,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197855610] [2020-10-09 13:49:19,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:19,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-09 13:49:19,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400852265] [2020-10-09 13:49:19,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:49:19,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:19,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:49:19,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:49:19,718 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-09 13:49:19,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:19,757 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-09 13:49:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:49:19,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-09 13:49:19,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:19,783 INFO L225 Difference]: With dead ends: 600 [2020-10-09 13:49:19,784 INFO L226 Difference]: Without dead ends: 559 [2020-10-09 13:49:19,785 INFO L673 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 [2020-10-09 13:49:19,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-09 13:49:19,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-09 13:49:19,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-09 13:49:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-09 13:49:19,851 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-09 13:49:19,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:19,851 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-09 13:49:19,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:49:19,851 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-09 13:49:19,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 13:49:19,852 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:19,852 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:19,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-09 13:49:19,853 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:19,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:19,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-10-09 13:49:19,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:19,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057656978] [2020-10-09 13:49:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:19,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057656978] [2020-10-09 13:49:19,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:19,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:19,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563871604] [2020-10-09 13:49:19,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:49:19,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:19,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:49:19,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:49:19,925 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-09 13:49:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:20,015 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-09 13:49:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:49:20,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-09 13:49:20,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:20,023 INFO L225 Difference]: With dead ends: 817 [2020-10-09 13:49:20,023 INFO L226 Difference]: Without dead ends: 812 [2020-10-09 13:49:20,023 INFO L673 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 [2020-10-09 13:49:20,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-09 13:49:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-09 13:49:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-09 13:49:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-09 13:49:20,050 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-09 13:49:20,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:20,050 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-09 13:49:20,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:49:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-09 13:49:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 13:49:20,052 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:20,052 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:20,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-09 13:49:20,052 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:20,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:20,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-10-09 13:49:20,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:20,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271492089] [2020-10-09 13:49:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:20,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271492089] [2020-10-09 13:49:20,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:20,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:20,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923855225] [2020-10-09 13:49:20,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:49:20,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:20,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:49:20,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:49:20,100 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-09 13:49:20,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:20,190 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-09 13:49:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:49:20,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-09 13:49:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:20,198 INFO L225 Difference]: With dead ends: 843 [2020-10-09 13:49:20,198 INFO L226 Difference]: Without dead ends: 836 [2020-10-09 13:49:20,198 INFO L673 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 [2020-10-09 13:49:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-09 13:49:20,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-09 13:49:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-09 13:49:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-09 13:49:20,225 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-09 13:49:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:20,226 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-09 13:49:20,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:49:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-09 13:49:20,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 13:49:20,228 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:20,228 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:20,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-09 13:49:20,228 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:20,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:20,229 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-10-09 13:49:20,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:20,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662503597] [2020-10-09 13:49:20,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:20,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662503597] [2020-10-09 13:49:20,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104705416] [2020-10-09 13:49:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-09 13:49:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:20,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:49:20,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:20,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:20,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:49:20,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670032912] [2020-10-09 13:49:20,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:49:20,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:20,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:49:20,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:49:20,449 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-10-09 13:49:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:20,720 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-09 13:49:20,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:20,721 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-09 13:49:20,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:20,728 INFO L225 Difference]: With dead ends: 1059 [2020-10-09 13:49:20,728 INFO L226 Difference]: Without dead ends: 1052 [2020-10-09 13:49:20,729 INFO L673 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 [2020-10-09 13:49:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-09 13:49:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-09 13:49:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-09 13:49:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-09 13:49:20,755 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-09 13:49:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:20,755 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-09 13:49:20,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:49:20,756 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-09 13:49:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 13:49:20,757 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:20,757 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:20,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-09 13:49:20,973 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:20,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:20,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-10-09 13:49:20,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:20,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783819685] [2020-10-09 13:49:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:21,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783819685] [2020-10-09 13:49:21,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:21,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:49:21,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960236543] [2020-10-09 13:49:21,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:49:21,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:21,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:49:21,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:49:21,026 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-09 13:49:21,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:21,262 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-09 13:49:21,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:21,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-09 13:49:21,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:21,270 INFO L225 Difference]: With dead ends: 1053 [2020-10-09 13:49:21,270 INFO L226 Difference]: Without dead ends: 1045 [2020-10-09 13:49:21,271 INFO L673 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 [2020-10-09 13:49:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-09 13:49:21,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-09 13:49:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-09 13:49:21,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-09 13:49:21,295 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-09 13:49:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:21,295 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-09 13:49:21,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:49:21,296 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-09 13:49:21,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-09 13:49:21,296 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:21,297 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:21,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-09 13:49:21,297 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:21,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:21,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-10-09 13:49:21,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:21,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115724550] [2020-10-09 13:49:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:49:21,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115724550] [2020-10-09 13:49:21,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:21,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:21,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427051831] [2020-10-09 13:49:21,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:49:21,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:21,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:49:21,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:49:21,362 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-09 13:49:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:21,444 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-09 13:49:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:49:21,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-09 13:49:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:21,450 INFO L225 Difference]: With dead ends: 736 [2020-10-09 13:49:21,451 INFO L226 Difference]: Without dead ends: 728 [2020-10-09 13:49:21,451 INFO L673 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 [2020-10-09 13:49:21,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-09 13:49:21,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-09 13:49:21,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-09 13:49:21,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-09 13:49:21,474 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-09 13:49:21,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:21,474 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-09 13:49:21,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:49:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-09 13:49:21,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-09 13:49:21,475 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:21,476 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:21,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-09 13:49:21,476 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:49:21,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:21,476 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-10-09 13:49:21,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:21,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620508552] [2020-10-09 13:49:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:49:21,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:49:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:49:21,510 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:49:21,523 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-09 13:49:21,523 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 13:49:21,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-09 13:49:21,524 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-09 13:49:21,524 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-09 13:49:21,525 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-09 13:49:21,542 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,542 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,542 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,542 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,543 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,543 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,543 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,543 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,543 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,545 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,545 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,545 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,545 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,545 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,546 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,546 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,546 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,546 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,546 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,547 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,547 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,547 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,547 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,549 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,549 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,549 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,549 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,549 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,550 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,550 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,550 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,550 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,550 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,551 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,551 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,552 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,552 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,552 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,552 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,552 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,552 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,552 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,553 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,553 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,554 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,554 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,555 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,555 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,555 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,555 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,561 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,562 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,562 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,564 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,564 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,564 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,564 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,565 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,567 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,567 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,567 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,567 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,568 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,570 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,573 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,573 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,573 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,574 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,574 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,574 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,575 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,576 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,576 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,576 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,576 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,576 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,579 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,580 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,580 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:21,581 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-09 13:49:21,582 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:49:21,582 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:49:21,582 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:49:21,582 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:49:21,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:49:21,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:49:21,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:49:21,583 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:49:21,584 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:49:21,584 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-09 13:49:21,585 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-09 13:49:21,585 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-10-09 13:49:21,626 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-09 13:49:21,626 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-09 13:49:21,630 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. [2020-10-09 13:49:21,633 INFO L117 LiptonReduction]: Number of co-enabled transitions 1756 [2020-10-09 13:49:23,476 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-09 13:49:23,636 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-09 13:49:23,727 INFO L132 LiptonReduction]: Checked pairs total: 2590 [2020-10-09 13:49:23,728 INFO L134 LiptonReduction]: Total number of compositions: 92 [2020-10-09 13:49:23,728 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-09 13:49:23,841 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-09 13:49:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-09 13:49:23,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-09 13:49:23,842 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:23,842 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-09 13:49:23,842 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]=== [2020-10-09 13:49:23,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:23,843 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-10-09 13:49:23,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:23,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313590363] [2020-10-09 13:49:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:23,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313590363] [2020-10-09 13:49:23,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:23,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-09 13:49:23,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754954804] [2020-10-09 13:49:23,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:49:23,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:23,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:49:23,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:49:23,863 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-09 13:49:23,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:23,908 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-09 13:49:23,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:49:23,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-09 13:49:23,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:23,926 INFO L225 Difference]: With dead ends: 1889 [2020-10-09 13:49:23,926 INFO L226 Difference]: Without dead ends: 1767 [2020-10-09 13:49:23,926 INFO L673 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 [2020-10-09 13:49:23,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-09 13:49:23,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-09 13:49:23,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-09 13:49:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-09 13:49:24,008 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-09 13:49:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:24,008 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-09 13:49:24,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:49:24,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-09 13:49:24,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 13:49:24,009 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:24,009 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:24,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-09 13:49:24,009 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]=== [2020-10-09 13:49:24,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:24,009 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-10-09 13:49:24,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:24,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722661790] [2020-10-09 13:49:24,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:24,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722661790] [2020-10-09 13:49:24,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:24,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:24,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823465349] [2020-10-09 13:49:24,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:49:24,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:24,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:49:24,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:49:24,048 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-09 13:49:24,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:24,142 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-09 13:49:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:49:24,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-09 13:49:24,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:24,166 INFO L225 Difference]: With dead ends: 2905 [2020-10-09 13:49:24,166 INFO L226 Difference]: Without dead ends: 2899 [2020-10-09 13:49:24,166 INFO L673 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 [2020-10-09 13:49:24,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-09 13:49:24,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-09 13:49:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-09 13:49:24,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-09 13:49:24,265 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-09 13:49:24,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:24,265 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-09 13:49:24,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:49:24,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-09 13:49:24,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 13:49:24,266 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:24,266 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:24,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-09 13:49:24,267 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]=== [2020-10-09 13:49:24,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:24,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-10-09 13:49:24,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:24,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861545354] [2020-10-09 13:49:24,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:24,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861545354] [2020-10-09 13:49:24,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:24,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:24,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296384978] [2020-10-09 13:49:24,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:49:24,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:24,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:49:24,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:49:24,307 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-09 13:49:24,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:24,406 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-09 13:49:24,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:49:24,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-09 13:49:24,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:24,433 INFO L225 Difference]: With dead ends: 3204 [2020-10-09 13:49:24,433 INFO L226 Difference]: Without dead ends: 3194 [2020-10-09 13:49:24,433 INFO L673 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 [2020-10-09 13:49:24,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-09 13:49:24,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-09 13:49:24,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-09 13:49:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-09 13:49:24,534 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-09 13:49:24,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:24,534 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-09 13:49:24,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:49:24,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-09 13:49:24,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 13:49:24,535 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:24,535 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:24,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-09 13:49:24,536 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]=== [2020-10-09 13:49:24,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:24,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-10-09 13:49:24,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:24,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303292834] [2020-10-09 13:49:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:24,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303292834] [2020-10-09 13:49:24,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848699092] [2020-10-09 13:49:24,593 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 [2020-10-09 13:49:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:24,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:49:24,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:24,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:24,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:49:24,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6213261] [2020-10-09 13:49:24,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:49:24,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:24,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:49:24,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:49:24,778 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-10-09 13:49:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:25,120 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-09 13:49:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:25,121 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-09 13:49:25,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:25,145 INFO L225 Difference]: With dead ends: 4556 [2020-10-09 13:49:25,145 INFO L226 Difference]: Without dead ends: 4546 [2020-10-09 13:49:25,146 INFO L673 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 [2020-10-09 13:49:25,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-09 13:49:25,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-09 13:49:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-09 13:49:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-09 13:49:25,263 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-09 13:49:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:25,264 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-09 13:49:25,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:49:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-09 13:49:25,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 13:49:25,265 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:25,265 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:25,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-09 13:49:25,479 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]=== [2020-10-09 13:49:25,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:25,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-10-09 13:49:25,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:25,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212452419] [2020-10-09 13:49:25,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:25,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212452419] [2020-10-09 13:49:25,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:25,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:49:25,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028638774] [2020-10-09 13:49:25,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:49:25,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:25,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:49:25,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:49:25,535 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-09 13:49:25,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:25,824 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-09 13:49:25,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:25,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-09 13:49:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:25,842 INFO L225 Difference]: With dead ends: 4612 [2020-10-09 13:49:25,843 INFO L226 Difference]: Without dead ends: 4601 [2020-10-09 13:49:25,843 INFO L673 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 [2020-10-09 13:49:25,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-09 13:49:25,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-09 13:49:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-09 13:49:25,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-09 13:49:25,946 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-09 13:49:25,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:25,946 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-09 13:49:25,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:49:25,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-09 13:49:25,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-09 13:49:25,948 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:25,948 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:25,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-09 13:49:25,948 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]=== [2020-10-09 13:49:25,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:25,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-10-09 13:49:25,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:25,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183464353] [2020-10-09 13:49:25,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:49:25,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183464353] [2020-10-09 13:49:25,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:25,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:25,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395353520] [2020-10-09 13:49:25,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:49:25,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:25,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:49:25,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:49:25,989 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-09 13:49:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:26,106 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-09 13:49:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:49:26,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-09 13:49:26,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:26,119 INFO L225 Difference]: With dead ends: 3265 [2020-10-09 13:49:26,119 INFO L226 Difference]: Without dead ends: 3250 [2020-10-09 13:49:26,120 INFO L673 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 [2020-10-09 13:49:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-09 13:49:26,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-09 13:49:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-09 13:49:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-09 13:49:26,266 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-09 13:49:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:26,266 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-09 13:49:26,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:49:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-09 13:49:26,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:49:26,268 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:26,268 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:26,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-09 13:49:26,268 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]=== [2020-10-09 13:49:26,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:26,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-10-09 13:49:26,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:26,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147829] [2020-10-09 13:49:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:49:26,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147829] [2020-10-09 13:49:26,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693829133] [2020-10-09 13:49:26,318 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 [2020-10-09 13:49:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:26,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:49:26,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:49:26,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:26,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:49:26,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611870195] [2020-10-09 13:49:26,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:49:26,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:26,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:49:26,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:49:26,439 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-10-09 13:49:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:26,799 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-09 13:49:26,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:26,799 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-09 13:49:26,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:26,815 INFO L225 Difference]: With dead ends: 4825 [2020-10-09 13:49:26,815 INFO L226 Difference]: Without dead ends: 4813 [2020-10-09 13:49:26,816 INFO L673 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 [2020-10-09 13:49:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-09 13:49:26,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-09 13:49:26,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-09 13:49:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-09 13:49:26,915 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-09 13:49:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:26,916 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-09 13:49:26,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:49:26,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-09 13:49:26,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:49:26,917 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:26,917 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:27,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:49:27,132 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]=== [2020-10-09 13:49:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:27,132 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-10-09 13:49:27,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:27,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671917066] [2020-10-09 13:49:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:27,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671917066] [2020-10-09 13:49:27,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585600737] [2020-10-09 13:49:27,183 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 [2020-10-09 13:49:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:27,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:49:27,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:27,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:27,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:49:27,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941807240] [2020-10-09 13:49:27,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:49:27,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:27,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:49:27,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:49:27,342 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-10-09 13:49:27,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:27,710 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-09 13:49:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:27,710 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-09 13:49:27,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:27,725 INFO L225 Difference]: With dead ends: 4942 [2020-10-09 13:49:27,725 INFO L226 Difference]: Without dead ends: 4925 [2020-10-09 13:49:27,726 INFO L673 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 [2020-10-09 13:49:27,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-09 13:49:27,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-09 13:49:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-09 13:49:27,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-09 13:49:27,814 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-09 13:49:27,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:27,815 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-09 13:49:27,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:49:27,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-09 13:49:27,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:49:27,816 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:27,816 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:28,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:49:28,031 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]=== [2020-10-09 13:49:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:28,031 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-10-09 13:49:28,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:28,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624760795] [2020-10-09 13:49:28,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:49:28,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624760795] [2020-10-09 13:49:28,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:28,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:49:28,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401150477] [2020-10-09 13:49:28,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:49:28,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:28,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:49:28,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:49:28,086 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-09 13:49:28,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:28,458 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-09 13:49:28,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:28,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-09 13:49:28,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:28,481 INFO L225 Difference]: With dead ends: 4934 [2020-10-09 13:49:28,481 INFO L226 Difference]: Without dead ends: 4917 [2020-10-09 13:49:28,481 INFO L673 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 [2020-10-09 13:49:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-09 13:49:28,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-09 13:49:28,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-09 13:49:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-09 13:49:28,606 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-09 13:49:28,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:28,606 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-09 13:49:28,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:49:28,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-09 13:49:28,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:49:28,609 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:28,609 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:28,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-09 13:49:28,609 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]=== [2020-10-09 13:49:28,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:28,610 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-10-09 13:49:28,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:28,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996021009] [2020-10-09 13:49:28,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:49:28,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996021009] [2020-10-09 13:49:28,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:28,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:49:28,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613339455] [2020-10-09 13:49:28,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:49:28,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:28,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:49:28,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:49:28,699 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-09 13:49:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:28,935 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-09 13:49:28,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:28,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-09 13:49:28,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:28,948 INFO L225 Difference]: With dead ends: 4774 [2020-10-09 13:49:28,948 INFO L226 Difference]: Without dead ends: 4757 [2020-10-09 13:49:28,948 INFO L673 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 [2020-10-09 13:49:28,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-09 13:49:29,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-09 13:49:29,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-09 13:49:29,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-09 13:49:29,041 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-09 13:49:29,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:29,041 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-09 13:49:29,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:49:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-09 13:49:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:29,044 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:29,044 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:29,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-09 13:49:29,044 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]=== [2020-10-09 13:49:29,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:29,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-10-09 13:49:29,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:29,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099549993] [2020-10-09 13:49:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:29,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099549993] [2020-10-09 13:49:29,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210173551] [2020-10-09 13:49:29,125 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 [2020-10-09 13:49:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:29,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:49:29,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:29,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:29,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:49:29,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175101420] [2020-10-09 13:49:29,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:49:29,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:29,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:49:29,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:49:29,318 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-10-09 13:49:30,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:30,073 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-09 13:49:30,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:49:30,073 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-09 13:49:30,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:30,089 INFO L225 Difference]: With dead ends: 6025 [2020-10-09 13:49:30,089 INFO L226 Difference]: Without dead ends: 6017 [2020-10-09 13:49:30,091 INFO L673 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 [2020-10-09 13:49:30,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-09 13:49:30,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-09 13:49:30,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-09 13:49:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-09 13:49:30,187 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-09 13:49:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:30,190 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-09 13:49:30,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:49:30,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-09 13:49:30,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:30,191 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:30,191 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:30,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-09 13:49:30,405 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]=== [2020-10-09 13:49:30,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:30,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-10-09 13:49:30,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:30,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739274972] [2020-10-09 13:49:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:49:30,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739274972] [2020-10-09 13:49:30,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961607808] [2020-10-09 13:49:30,492 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 [2020-10-09 13:49:30,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:49:30,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:49:30,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:49:30,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:49:30,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:30,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:49:30,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172476911] [2020-10-09 13:49:30,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:49:30,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:30,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:49:30,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:49:30,720 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-10-09 13:49:31,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:31,433 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-09 13:49:31,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:49:31,434 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-09 13:49:31,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:31,444 INFO L225 Difference]: With dead ends: 5914 [2020-10-09 13:49:31,444 INFO L226 Difference]: Without dead ends: 5903 [2020-10-09 13:49:31,445 INFO L673 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 [2020-10-09 13:49:31,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-09 13:49:31,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-09 13:49:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-09 13:49:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-09 13:49:31,543 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-09 13:49:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:31,543 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-09 13:49:31,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:49:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-09 13:49:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:31,546 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:31,546 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:31,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:49:31,760 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]=== [2020-10-09 13:49:31,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:31,760 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-10-09 13:49:31,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:31,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429081864] [2020-10-09 13:49:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:31,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429081864] [2020-10-09 13:49:31,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761456480] [2020-10-09 13:49:31,827 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 [2020-10-09 13:49:31,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 13:49:31,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:49:31,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:49:31,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:31,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:31,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:49:31,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380320144] [2020-10-09 13:49:31,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:49:31,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:31,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:49:31,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:49:31,983 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-10-09 13:49:32,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:32,828 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-09 13:49:32,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:49:32,828 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-09 13:49:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:32,837 INFO L225 Difference]: With dead ends: 5907 [2020-10-09 13:49:32,837 INFO L226 Difference]: Without dead ends: 5899 [2020-10-09 13:49:32,838 INFO L673 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 [2020-10-09 13:49:32,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-09 13:49:32,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-09 13:49:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-09 13:49:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-09 13:49:32,913 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-09 13:49:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:32,913 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-09 13:49:32,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:49:32,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-09 13:49:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:32,915 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:32,915 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:33,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-09 13:49:33,130 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]=== [2020-10-09 13:49:33,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:33,131 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-10-09 13:49:33,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:33,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439501386] [2020-10-09 13:49:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:33,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439501386] [2020-10-09 13:49:33,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523222929] [2020-10-09 13:49:33,240 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 [2020-10-09 13:49:33,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:49:33,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:49:33,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:49:33,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:33,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:33,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:49:33,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068106493] [2020-10-09 13:49:33,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:49:33,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:33,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:49:33,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:49:33,420 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-10-09 13:49:34,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:34,224 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-09 13:49:34,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:49:34,226 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-09 13:49:34,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:34,235 INFO L225 Difference]: With dead ends: 5835 [2020-10-09 13:49:34,236 INFO L226 Difference]: Without dead ends: 5824 [2020-10-09 13:49:34,236 INFO L673 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 [2020-10-09 13:49:34,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-09 13:49:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-09 13:49:34,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-09 13:49:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-09 13:49:34,322 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-09 13:49:34,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:34,323 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-09 13:49:34,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:49:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-09 13:49:34,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:34,325 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:34,325 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:34,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-09 13:49:34,541 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]=== [2020-10-09 13:49:34,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:34,541 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-10-09 13:49:34,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:34,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253362999] [2020-10-09 13:49:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:49:34,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253362999] [2020-10-09 13:49:34,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:34,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:49:34,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678549120] [2020-10-09 13:49:34,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:49:34,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:34,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:49:34,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:49:34,709 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-10-09 13:49:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:35,403 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-10-09 13:49:35,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:49:35,403 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-09 13:49:35,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:35,417 INFO L225 Difference]: With dead ends: 5820 [2020-10-09 13:49:35,417 INFO L226 Difference]: Without dead ends: 5812 [2020-10-09 13:49:35,418 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-09 13:49:35,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-10-09 13:49:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-10-09 13:49:35,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-10-09 13:49:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-10-09 13:49:35,508 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-10-09 13:49:35,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:35,508 INFO L481 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-10-09 13:49:35,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:49:35,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-10-09 13:49:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:35,510 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:35,511 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:35,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-09 13:49:35,511 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]=== [2020-10-09 13:49:35,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:35,511 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-10-09 13:49:35,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:35,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128043653] [2020-10-09 13:49:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:35,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:49:35,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128043653] [2020-10-09 13:49:35,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:35,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:49:35,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741523355] [2020-10-09 13:49:35,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:49:35,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:35,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:49:35,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:49:35,584 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-10-09 13:49:36,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:36,298 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-10-09 13:49:36,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:49:36,298 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-09 13:49:36,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:36,308 INFO L225 Difference]: With dead ends: 5717 [2020-10-09 13:49:36,309 INFO L226 Difference]: Without dead ends: 5705 [2020-10-09 13:49:36,309 INFO L673 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 [2020-10-09 13:49:36,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-10-09 13:49:36,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-10-09 13:49:36,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-10-09 13:49:36,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-10-09 13:49:36,396 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-10-09 13:49:36,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:36,396 INFO L481 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-10-09 13:49:36,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:49:36,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-10-09 13:49:36,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:36,398 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:36,398 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:36,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-09 13:49:36,398 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]=== [2020-10-09 13:49:36,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:36,399 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-10-09 13:49:36,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:36,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328027952] [2020-10-09 13:49:36,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:49:36,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328027952] [2020-10-09 13:49:36,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:36,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:36,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379528280] [2020-10-09 13:49:36,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:49:36,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:36,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:49:36,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:49:36,434 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-10-09 13:49:36,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:36,537 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-10-09 13:49:36,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:49:36,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-09 13:49:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:36,545 INFO L225 Difference]: With dead ends: 2762 [2020-10-09 13:49:36,545 INFO L226 Difference]: Without dead ends: 2746 [2020-10-09 13:49:36,546 INFO L673 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 [2020-10-09 13:49:36,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-10-09 13:49:36,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-10-09 13:49:36,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-09 13:49:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-09 13:49:36,612 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-09 13:49:36,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:36,612 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-09 13:49:36,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:49:36,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-09 13:49:36,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-09 13:49:36,615 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:36,615 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:36,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-09 13:49:36,617 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]=== [2020-10-09 13:49:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:36,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-10-09 13:49:36,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:36,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063982818] [2020-10-09 13:49:36,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:49:36,642 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:49:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:49:36,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:49:36,672 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-09 13:49:36,672 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 13:49:36,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-09 13:49:36,672 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-09 13:49:36,674 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-09 13:49:36,674 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-09 13:49:36,693 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,693 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,693 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,694 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,694 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,694 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,694 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,694 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,694 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,694 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,695 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,695 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,695 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,695 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,695 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,698 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,698 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,698 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,699 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,699 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,700 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,700 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,702 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,702 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,702 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,702 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,702 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,702 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,702 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,704 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,704 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,704 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,705 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,705 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,707 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,707 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,710 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,710 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,710 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,710 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,710 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,715 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,716 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,716 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,718 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,718 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,718 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,718 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,718 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,719 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,720 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,720 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,720 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,720 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,722 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,722 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:49:36,734 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-09 13:49:36,735 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:49:36,735 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:49:36,735 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:49:36,735 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:49:36,735 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:49:36,735 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:49:36,735 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:49:36,736 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:49:36,740 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:49:36,740 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-09 13:49:36,740 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-09 13:49:36,740 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-10-09 13:49:36,786 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-09 13:49:36,786 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-09 13:49:36,789 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. [2020-10-09 13:49:36,794 INFO L117 LiptonReduction]: Number of co-enabled transitions 2264 [2020-10-09 13:49:38,493 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-09 13:49:38,725 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-09 13:49:38,939 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-09 13:49:39,023 INFO L132 LiptonReduction]: Checked pairs total: 4038 [2020-10-09 13:49:39,023 INFO L134 LiptonReduction]: Total number of compositions: 111 [2020-10-09 13:49:39,024 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-09 13:49:39,401 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-09 13:49:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-09 13:49:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-09 13:49:39,401 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:39,401 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-09 13:49:39,401 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]=== [2020-10-09 13:49:39,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:39,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-10-09 13:49:39,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:39,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877167768] [2020-10-09 13:49:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:39,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877167768] [2020-10-09 13:49:39,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:39,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-09 13:49:39,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116765247] [2020-10-09 13:49:39,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:49:39,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:39,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:49:39,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:49:39,416 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-09 13:49:39,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:39,486 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-09 13:49:39,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:49:39,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-09 13:49:39,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:39,509 INFO L225 Difference]: With dead ends: 5844 [2020-10-09 13:49:39,510 INFO L226 Difference]: Without dead ends: 5479 [2020-10-09 13:49:39,512 INFO L673 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 [2020-10-09 13:49:39,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-09 13:49:39,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-09 13:49:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-09 13:49:39,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-09 13:49:39,825 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-09 13:49:39,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:39,825 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-09 13:49:39,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:49:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-09 13:49:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 13:49:39,825 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:39,825 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:39,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-09 13:49:39,826 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]=== [2020-10-09 13:49:39,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:39,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-10-09 13:49:39,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:39,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218844222] [2020-10-09 13:49:39,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:39,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218844222] [2020-10-09 13:49:39,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:39,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:39,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816046159] [2020-10-09 13:49:39,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:49:39,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:39,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:49:39,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:49:39,868 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-09 13:49:40,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:40,039 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-09 13:49:40,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:49:40,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-09 13:49:40,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:40,079 INFO L225 Difference]: With dead ends: 9673 [2020-10-09 13:49:40,079 INFO L226 Difference]: Without dead ends: 9666 [2020-10-09 13:49:40,081 INFO L673 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 [2020-10-09 13:49:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-09 13:49:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-09 13:49:40,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-09 13:49:40,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-09 13:49:40,367 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-09 13:49:40,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:40,367 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-09 13:49:40,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:49:40,367 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-09 13:49:40,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 13:49:40,368 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:40,368 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:40,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-09 13:49:40,368 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]=== [2020-10-09 13:49:40,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:40,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-10-09 13:49:40,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:40,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350538575] [2020-10-09 13:49:40,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:40,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350538575] [2020-10-09 13:49:40,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:40,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:40,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594063874] [2020-10-09 13:49:40,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:49:40,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:40,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:49:40,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:49:40,409 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-09 13:49:40,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:40,565 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-09 13:49:40,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:49:40,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-09 13:49:40,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:40,590 INFO L225 Difference]: With dead ends: 11081 [2020-10-09 13:49:40,590 INFO L226 Difference]: Without dead ends: 11068 [2020-10-09 13:49:40,590 INFO L673 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 [2020-10-09 13:49:40,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-09 13:49:40,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-09 13:49:40,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-09 13:49:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-09 13:49:40,822 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-09 13:49:40,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:40,822 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-09 13:49:40,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:49:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-09 13:49:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 13:49:40,823 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:40,823 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:40,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-09 13:49:40,823 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]=== [2020-10-09 13:49:40,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:40,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-10-09 13:49:40,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:40,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341822790] [2020-10-09 13:49:40,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:40,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341822790] [2020-10-09 13:49:40,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305010537] [2020-10-09 13:49:40,871 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 [2020-10-09 13:49:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:40,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:49:40,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:41,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:41,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:49:41,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842623309] [2020-10-09 13:49:41,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:49:41,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:41,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:49:41,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:49:41,020 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-10-09 13:49:41,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:41,548 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-09 13:49:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:41,548 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-09 13:49:41,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:41,584 INFO L225 Difference]: With dead ends: 16749 [2020-10-09 13:49:41,584 INFO L226 Difference]: Without dead ends: 16736 [2020-10-09 13:49:41,585 INFO L673 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 [2020-10-09 13:49:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-09 13:49:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-09 13:49:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-09 13:49:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-09 13:49:41,857 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-09 13:49:41,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:41,858 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-09 13:49:41,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:49:41,858 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-09 13:49:41,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 13:49:41,858 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:41,858 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:42,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:49:42,059 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]=== [2020-10-09 13:49:42,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:42,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-10-09 13:49:42,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:42,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168757640] [2020-10-09 13:49:42,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:42,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168757640] [2020-10-09 13:49:42,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:42,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:49:42,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591667804] [2020-10-09 13:49:42,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:49:42,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:42,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:49:42,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:49:42,113 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-09 13:49:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:42,459 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-09 13:49:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:42,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-09 13:49:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:42,496 INFO L225 Difference]: With dead ends: 17085 [2020-10-09 13:49:42,496 INFO L226 Difference]: Without dead ends: 17071 [2020-10-09 13:49:42,497 INFO L673 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 [2020-10-09 13:49:42,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-09 13:49:42,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-09 13:49:42,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-09 13:49:42,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-09 13:49:42,960 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-09 13:49:42,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:42,960 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-09 13:49:42,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:49:42,961 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-09 13:49:42,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-09 13:49:42,961 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:42,961 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:42,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-09 13:49:42,961 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]=== [2020-10-09 13:49:42,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:42,962 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-10-09 13:49:42,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:42,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347686251] [2020-10-09 13:49:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:49:43,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347686251] [2020-10-09 13:49:43,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:43,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:43,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518298658] [2020-10-09 13:49:43,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:49:43,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:43,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:49:43,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:49:43,004 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-09 13:49:43,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:43,150 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-09 13:49:43,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:49:43,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-09 13:49:43,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:43,178 INFO L225 Difference]: With dead ends: 12234 [2020-10-09 13:49:43,178 INFO L226 Difference]: Without dead ends: 12212 [2020-10-09 13:49:43,179 INFO L673 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 [2020-10-09 13:49:43,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-09 13:49:43,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-09 13:49:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-09 13:49:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-09 13:49:43,410 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-09 13:49:43,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:43,410 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-09 13:49:43,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:49:43,411 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-09 13:49:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:49:43,412 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:43,412 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:43,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-09 13:49:43,412 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]=== [2020-10-09 13:49:43,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:43,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-10-09 13:49:43,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:43,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633533572] [2020-10-09 13:49:43,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-09 13:49:43,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633533572] [2020-10-09 13:49:43,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142121812] [2020-10-09 13:49:43,468 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 [2020-10-09 13:49:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:43,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:49:43,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-09 13:49:43,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:43,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:49:43,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112073235] [2020-10-09 13:49:43,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:49:43,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:43,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:49:43,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:49:43,604 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-10-09 13:49:43,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:43,957 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-09 13:49:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:43,958 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-09 13:49:43,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:43,998 INFO L225 Difference]: With dead ends: 19016 [2020-10-09 13:49:43,998 INFO L226 Difference]: Without dead ends: 18998 [2020-10-09 13:49:43,998 INFO L673 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 [2020-10-09 13:49:44,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-09 13:49:44,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-09 13:49:44,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-09 13:49:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-09 13:49:44,317 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-09 13:49:44,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:44,318 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-09 13:49:44,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:49:44,318 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-09 13:49:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:49:44,319 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:44,319 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:44,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-09 13:49:44,528 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]=== [2020-10-09 13:49:44,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:44,528 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-10-09 13:49:44,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:44,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042284413] [2020-10-09 13:49:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:44,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042284413] [2020-10-09 13:49:44,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556598988] [2020-10-09 13:49:44,576 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 [2020-10-09 13:49:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:44,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:49:44,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:44,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:44,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:49:44,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859214829] [2020-10-09 13:49:44,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:49:44,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:44,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:49:44,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:49:44,724 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-10-09 13:49:45,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:45,162 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-10-09 13:49:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:45,162 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-09 13:49:45,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:45,238 INFO L225 Difference]: With dead ends: 19670 [2020-10-09 13:49:45,238 INFO L226 Difference]: Without dead ends: 19645 [2020-10-09 13:49:45,238 INFO L673 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 [2020-10-09 13:49:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-10-09 13:49:45,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-10-09 13:49:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-10-09 13:49:45,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-10-09 13:49:45,716 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-10-09 13:49:45,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:45,716 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-10-09 13:49:45,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:49:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-10-09 13:49:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:49:45,717 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:45,717 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:45,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-09 13:49:45,931 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]=== [2020-10-09 13:49:45,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:45,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-10-09 13:49:45,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:45,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575079003] [2020-10-09 13:49:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:49:45,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575079003] [2020-10-09 13:49:45,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:45,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:49:45,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084713467] [2020-10-09 13:49:45,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:49:45,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:45,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:49:45,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:49:45,984 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-10-09 13:49:46,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:46,342 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-10-09 13:49:46,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:46,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-09 13:49:46,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:46,384 INFO L225 Difference]: With dead ends: 19852 [2020-10-09 13:49:46,384 INFO L226 Difference]: Without dead ends: 19827 [2020-10-09 13:49:46,385 INFO L673 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 [2020-10-09 13:49:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-09 13:49:46,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-10-09 13:49:46,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-10-09 13:49:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-10-09 13:49:46,875 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-10-09 13:49:46,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:46,875 INFO L481 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-10-09 13:49:46,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:49:46,875 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-10-09 13:49:46,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:49:46,876 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:46,876 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:46,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-09 13:49:46,876 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]=== [2020-10-09 13:49:46,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:46,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-10-09 13:49:46,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:46,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710498844] [2020-10-09 13:49:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:49:46,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710498844] [2020-10-09 13:49:46,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:46,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:49:46,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401847544] [2020-10-09 13:49:46,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:49:46,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:46,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:49:46,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:49:46,927 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-10-09 13:49:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:47,284 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-09 13:49:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:47,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-09 13:49:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:47,332 INFO L225 Difference]: With dead ends: 19555 [2020-10-09 13:49:47,332 INFO L226 Difference]: Without dead ends: 19530 [2020-10-09 13:49:47,333 INFO L673 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 [2020-10-09 13:49:47,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-09 13:49:47,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-09 13:49:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-09 13:49:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-09 13:49:47,661 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-09 13:49:47,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:47,661 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-09 13:49:47,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:49:47,661 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-09 13:49:47,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:47,663 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:47,663 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:47,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-09 13:49:47,663 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]=== [2020-10-09 13:49:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:47,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-10-09 13:49:47,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:47,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177956728] [2020-10-09 13:49:47,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:47,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177956728] [2020-10-09 13:49:47,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324700990] [2020-10-09 13:49:47,728 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 [2020-10-09 13:49:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:47,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:49:47,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:49:47,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:47,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:49:47,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540776027] [2020-10-09 13:49:47,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:49:47,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:47,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:49:47,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:49:47,909 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-10-09 13:49:48,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:48,915 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-09 13:49:48,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:49:48,915 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-09 13:49:48,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:48,984 INFO L225 Difference]: With dead ends: 26969 [2020-10-09 13:49:48,984 INFO L226 Difference]: Without dead ends: 26957 [2020-10-09 13:49:48,985 INFO L673 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 [2020-10-09 13:49:49,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-09 13:49:49,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-10-09 13:49:49,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-10-09 13:49:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-10-09 13:49:49,585 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-10-09 13:49:49,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:49,585 INFO L481 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-10-09 13:49:49,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:49:49,585 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-10-09 13:49:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:49,586 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:49,587 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:49,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:49:49,787 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]=== [2020-10-09 13:49:49,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:49,788 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-10-09 13:49:49,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:49,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442889732] [2020-10-09 13:49:49,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-09 13:49:49,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442889732] [2020-10-09 13:49:49,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461474607] [2020-10-09 13:49:49,871 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 [2020-10-09 13:49:49,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:49:49,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:49:49,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:49:49,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:50,042 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-09 13:49:50,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:50,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:49:50,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957634154] [2020-10-09 13:49:50,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:49:50,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:50,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:49:50,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:49:50,045 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-10-09 13:49:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:50,981 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-10-09 13:49:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:49:50,981 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-09 13:49:50,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:51,036 INFO L225 Difference]: With dead ends: 26661 [2020-10-09 13:49:51,036 INFO L226 Difference]: Without dead ends: 26645 [2020-10-09 13:49:51,037 INFO L673 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 [2020-10-09 13:49:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-10-09 13:49:51,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-10-09 13:49:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-09 13:49:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-09 13:49:51,397 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-09 13:49:51,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:51,397 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-09 13:49:51,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:49:51,397 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-09 13:49:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:51,399 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:51,399 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:51,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-09 13:49:51,612 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]=== [2020-10-09 13:49:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:51,613 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-10-09 13:49:51,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:51,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076510774] [2020-10-09 13:49:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:51,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076510774] [2020-10-09 13:49:51,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007171836] [2020-10-09 13:49:51,673 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 [2020-10-09 13:49:51,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 13:49:51,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:49:51,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:49:51,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:51,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:51,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:49:51,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968285498] [2020-10-09 13:49:51,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:49:51,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:51,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:49:51,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:49:51,854 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-10-09 13:49:52,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:52,863 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-10-09 13:49:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:49:52,863 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-09 13:49:52,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:52,935 INFO L225 Difference]: With dead ends: 26686 [2020-10-09 13:49:52,935 INFO L226 Difference]: Without dead ends: 26674 [2020-10-09 13:49:52,936 INFO L673 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 [2020-10-09 13:49:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-10-09 13:49:53,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-10-09 13:49:53,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-10-09 13:49:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-10-09 13:49:53,329 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-10-09 13:49:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:53,330 INFO L481 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-10-09 13:49:53,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:49:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-10-09 13:49:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:53,331 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:53,331 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:53,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:49:53,532 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]=== [2020-10-09 13:49:53,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:53,532 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-10-09 13:49:53,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:53,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731072357] [2020-10-09 13:49:53,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:53,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731072357] [2020-10-09 13:49:53,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014577473] [2020-10-09 13:49:53,596 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 [2020-10-09 13:49:53,667 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:49:53,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:49:53,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:49:53,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:49:53,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:53,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:49:53,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325139766] [2020-10-09 13:49:53,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:49:53,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:53,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:49:53,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:49:53,768 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-10-09 13:49:54,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:54,771 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-10-09 13:49:54,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:49:54,772 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-09 13:49:54,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:54,836 INFO L225 Difference]: With dead ends: 26489 [2020-10-09 13:49:54,836 INFO L226 Difference]: Without dead ends: 26473 [2020-10-09 13:49:54,837 INFO L673 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 [2020-10-09 13:49:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-10-09 13:49:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-10-09 13:49:55,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-10-09 13:49:55,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-10-09 13:49:55,210 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-10-09 13:49:55,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:55,210 INFO L481 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-10-09 13:49:55,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:49:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-10-09 13:49:55,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:55,212 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:55,212 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:55,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-09 13:49:55,420 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]=== [2020-10-09 13:49:55,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:55,420 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-10-09 13:49:55,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:55,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404762271] [2020-10-09 13:49:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:49:55,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404762271] [2020-10-09 13:49:55,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:55,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:49:55,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606210070] [2020-10-09 13:49:55,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:49:55,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:55,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:49:55,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:49:55,458 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-10-09 13:49:55,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:55,660 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-10-09 13:49:55,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:49:55,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-09 13:49:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:55,690 INFO L225 Difference]: With dead ends: 13251 [2020-10-09 13:49:55,690 INFO L226 Difference]: Without dead ends: 13220 [2020-10-09 13:49:55,691 INFO L673 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 [2020-10-09 13:49:55,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-10-09 13:49:55,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-10-09 13:49:55,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-10-09 13:49:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-10-09 13:49:55,952 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-10-09 13:49:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:55,953 INFO L481 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-10-09 13:49:55,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:49:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-10-09 13:49:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:55,954 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:55,954 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:55,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-09 13:49:55,954 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]=== [2020-10-09 13:49:55,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:55,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-10-09 13:49:55,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:55,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457939374] [2020-10-09 13:49:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:56,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:49:56,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457939374] [2020-10-09 13:49:56,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:56,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:49:56,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832019662] [2020-10-09 13:49:56,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:49:56,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:56,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:49:56,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:49:56,020 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-10-09 13:49:56,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:56,848 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-10-09 13:49:56,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:49:56,848 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-09 13:49:56,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:56,908 INFO L225 Difference]: With dead ends: 29788 [2020-10-09 13:49:56,909 INFO L226 Difference]: Without dead ends: 29770 [2020-10-09 13:49:56,909 INFO L673 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 [2020-10-09 13:49:57,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-10-09 13:49:57,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-10-09 13:49:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-10-09 13:49:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-10-09 13:49:57,317 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-10-09 13:49:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:57,317 INFO L481 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-10-09 13:49:57,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:49:57,317 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-10-09 13:49:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:49:57,319 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:57,319 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:57,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-09 13:49:57,319 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]=== [2020-10-09 13:49:57,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:57,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-10-09 13:49:57,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:57,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210459406] [2020-10-09 13:49:57,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:49:57,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210459406] [2020-10-09 13:49:57,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:49:57,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:49:57,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158205325] [2020-10-09 13:49:57,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:49:57,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:57,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:49:57,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:49:57,387 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-10-09 13:49:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:58,272 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-10-09 13:49:58,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:49:58,272 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-09 13:49:58,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:58,498 INFO L225 Difference]: With dead ends: 29379 [2020-10-09 13:49:58,498 INFO L226 Difference]: Without dead ends: 29356 [2020-10-09 13:49:58,498 INFO L673 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 [2020-10-09 13:49:58,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-09 13:49:58,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-10-09 13:49:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-09 13:49:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-09 13:49:58,882 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-09 13:49:58,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:58,882 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-09 13:49:58,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:49:58,882 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-09 13:49:58,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 13:49:58,884 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:58,884 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:49:58,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-09 13:49:58,884 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]=== [2020-10-09 13:49:58,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:49:58,884 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-10-09 13:49:58,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:49:58,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72172859] [2020-10-09 13:49:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:49:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:49:58,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72172859] [2020-10-09 13:49:58,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116195477] [2020-10-09 13:49:58,930 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 [2020-10-09 13:49:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:49:59,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:49:59,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:49:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:49:59,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:49:59,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:49:59,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025775327] [2020-10-09 13:49:59,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:49:59,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:49:59,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:49:59,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:49:59,079 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-10-09 13:49:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:49:59,490 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-09 13:49:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:49:59,491 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-09 13:49:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:49:59,534 INFO L225 Difference]: With dead ends: 19727 [2020-10-09 13:49:59,535 INFO L226 Difference]: Without dead ends: 19703 [2020-10-09 13:49:59,535 INFO L673 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 [2020-10-09 13:49:59,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-09 13:49:59,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-09 13:49:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-09 13:49:59,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-09 13:49:59,846 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-09 13:49:59,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:49:59,846 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-09 13:49:59,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:49:59,846 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-09 13:49:59,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 13:49:59,848 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:49:59,848 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:00,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-09 13:50:00,049 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]=== [2020-10-09 13:50:00,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:00,050 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-10-09 13:50:00,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:00,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099394327] [2020-10-09 13:50:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:50:00,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099394327] [2020-10-09 13:50:00,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411389370] [2020-10-09 13:50:00,100 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 [2020-10-09 13:50:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:00,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:50:00,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:50:00,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:00,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:50:00,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71343784] [2020-10-09 13:50:00,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:50:00,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:00,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:50:00,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:50:00,239 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-10-09 13:50:00,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:00,632 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-10-09 13:50:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:50:00,633 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-09 13:50:00,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:00,684 INFO L225 Difference]: With dead ends: 20694 [2020-10-09 13:50:00,685 INFO L226 Difference]: Without dead ends: 20666 [2020-10-09 13:50:00,685 INFO L673 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 [2020-10-09 13:50:00,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-10-09 13:50:00,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-10-09 13:50:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-09 13:50:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-10-09 13:50:01,026 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-10-09 13:50:01,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:01,026 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-10-09 13:50:01,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:50:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-10-09 13:50:01,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 13:50:01,030 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:01,030 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:01,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:50:01,245 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]=== [2020-10-09 13:50:01,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:01,246 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-10-09 13:50:01,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:01,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558461228] [2020-10-09 13:50:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:01,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558461228] [2020-10-09 13:50:01,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31917046] [2020-10-09 13:50:01,297 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 [2020-10-09 13:50:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:01,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:50:01,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:01,435 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:01,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:01,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:50:01,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512129553] [2020-10-09 13:50:01,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:50:01,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:01,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:50:01,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:50:01,437 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-10-09 13:50:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:01,994 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-10-09 13:50:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:50:01,995 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-09 13:50:01,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:02,048 INFO L225 Difference]: With dead ends: 21396 [2020-10-09 13:50:02,048 INFO L226 Difference]: Without dead ends: 21359 [2020-10-09 13:50:02,048 INFO L673 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 [2020-10-09 13:50:02,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-10-09 13:50:02,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-10-09 13:50:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-09 13:50:02,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-09 13:50:02,403 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-09 13:50:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:02,404 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-09 13:50:02,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:50:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-09 13:50:02,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 13:50:02,406 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:02,406 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:02,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-09 13:50:02,607 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]=== [2020-10-09 13:50:02,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:02,607 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-10-09 13:50:02,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:02,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157321352] [2020-10-09 13:50:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:50:02,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157321352] [2020-10-09 13:50:02,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:02,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:50:02,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077038683] [2020-10-09 13:50:02,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:50:02,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:02,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:50:02,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:50:02,655 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-09 13:50:03,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:03,015 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-10-09 13:50:03,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:50:03,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-09 13:50:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:03,061 INFO L225 Difference]: With dead ends: 21489 [2020-10-09 13:50:03,061 INFO L226 Difference]: Without dead ends: 21452 [2020-10-09 13:50:03,062 INFO L673 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 [2020-10-09 13:50:03,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-10-09 13:50:03,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-10-09 13:50:03,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-09 13:50:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-09 13:50:03,392 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-09 13:50:03,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:03,393 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-09 13:50:03,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:50:03,393 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-09 13:50:03,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 13:50:03,395 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:03,395 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:03,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-09 13:50:03,395 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]=== [2020-10-09 13:50:03,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:03,395 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-10-09 13:50:03,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:03,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157690093] [2020-10-09 13:50:03,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:03,446 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:50:03,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157690093] [2020-10-09 13:50:03,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:03,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:50:03,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645346814] [2020-10-09 13:50:03,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:50:03,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:03,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:50:03,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:50:03,448 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-09 13:50:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:03,833 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-10-09 13:50:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:50:03,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-09 13:50:03,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:03,885 INFO L225 Difference]: With dead ends: 21198 [2020-10-09 13:50:03,885 INFO L226 Difference]: Without dead ends: 21161 [2020-10-09 13:50:03,885 INFO L673 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 [2020-10-09 13:50:04,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-10-09 13:50:04,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-10-09 13:50:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-09 13:50:04,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-09 13:50:04,247 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-09 13:50:04,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:04,247 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-09 13:50:04,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:50:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-09 13:50:04,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 13:50:04,249 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:04,249 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:04,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-09 13:50:04,250 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]=== [2020-10-09 13:50:04,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:04,250 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-10-09 13:50:04,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:04,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685877572] [2020-10-09 13:50:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:50:04,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685877572] [2020-10-09 13:50:04,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:04,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:50:04,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703918841] [2020-10-09 13:50:04,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:50:04,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:04,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:50:04,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:50:04,307 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-09 13:50:04,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:04,765 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-10-09 13:50:04,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:50:04,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-09 13:50:04,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:04,818 INFO L225 Difference]: With dead ends: 21067 [2020-10-09 13:50:04,818 INFO L226 Difference]: Without dead ends: 21030 [2020-10-09 13:50:04,819 INFO L673 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 [2020-10-09 13:50:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-10-09 13:50:05,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-10-09 13:50:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-09 13:50:05,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-09 13:50:05,166 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-09 13:50:05,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:05,166 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-09 13:50:05,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:50:05,166 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-09 13:50:05,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:05,169 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:05,169 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:05,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-09 13:50:05,169 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]=== [2020-10-09 13:50:05,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:05,169 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-10-09 13:50:05,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:05,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792865523] [2020-10-09 13:50:05,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:50:05,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792865523] [2020-10-09 13:50:05,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799401358] [2020-10-09 13:50:05,230 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 [2020-10-09 13:50:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:05,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:50:05,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:50:05,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:05,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:50:05,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819142104] [2020-10-09 13:50:05,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:50:05,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:05,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:50:05,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:50:05,396 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-10-09 13:50:06,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:06,473 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-09 13:50:06,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:06,474 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:50:06,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:06,542 INFO L225 Difference]: With dead ends: 30145 [2020-10-09 13:50:06,542 INFO L226 Difference]: Without dead ends: 30125 [2020-10-09 13:50:06,543 INFO L673 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 [2020-10-09 13:50:06,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-09 13:50:06,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-10-09 13:50:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-10-09 13:50:06,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-10-09 13:50:06,991 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-10-09 13:50:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:06,991 INFO L481 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-10-09 13:50:06,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:50:06,991 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-10-09 13:50:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:06,994 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:06,994 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:07,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-09 13:50:07,195 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]=== [2020-10-09 13:50:07,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:07,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-10-09 13:50:07,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:07,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159985223] [2020-10-09 13:50:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:07,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:50:07,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159985223] [2020-10-09 13:50:07,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732929557] [2020-10-09 13:50:07,257 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 [2020-10-09 13:50:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:07,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:50:07,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:50:07,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:07,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:50:07,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478325299] [2020-10-09 13:50:07,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:50:07,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:07,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:50:07,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:50:07,446 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-10-09 13:50:08,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:08,424 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-10-09 13:50:08,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:08,425 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:50:08,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:08,503 INFO L225 Difference]: With dead ends: 29696 [2020-10-09 13:50:08,503 INFO L226 Difference]: Without dead ends: 29676 [2020-10-09 13:50:08,503 INFO L673 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 [2020-10-09 13:50:08,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-10-09 13:50:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-10-09 13:50:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-09 13:50:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-09 13:50:09,058 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-09 13:50:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:09,059 INFO L481 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-09 13:50:09,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:50:09,059 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-09 13:50:09,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:09,061 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:09,062 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:09,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-09 13:50:09,262 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]=== [2020-10-09 13:50:09,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:09,263 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-10-09 13:50:09,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:09,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221054729] [2020-10-09 13:50:09,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:09,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221054729] [2020-10-09 13:50:09,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952942714] [2020-10-09 13:50:09,327 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 [2020-10-09 13:50:09,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:50:09,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:50:09,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:50:09,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:09,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:09,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:50:09,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937164371] [2020-10-09 13:50:09,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:50:09,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:09,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:50:09,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:50:09,508 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-10-09 13:50:10,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:10,463 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-09 13:50:10,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:10,464 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:50:10,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:10,525 INFO L225 Difference]: With dead ends: 29267 [2020-10-09 13:50:10,525 INFO L226 Difference]: Without dead ends: 29245 [2020-10-09 13:50:10,525 INFO L673 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 [2020-10-09 13:50:10,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-09 13:50:10,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-09 13:50:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-09 13:50:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-09 13:50:10,939 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-09 13:50:10,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:10,939 INFO L481 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-09 13:50:10,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:50:10,940 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-09 13:50:10,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:10,942 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:10,942 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:11,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-09 13:50:11,149 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]=== [2020-10-09 13:50:11,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:11,149 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-10-09 13:50:11,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:11,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183167917] [2020-10-09 13:50:11,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:11,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183167917] [2020-10-09 13:50:11,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493048500] [2020-10-09 13:50:11,212 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 [2020-10-09 13:50:11,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:50:11,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:50:11,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:50:11,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:11,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:11,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:50:11,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969532175] [2020-10-09 13:50:11,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:50:11,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:11,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:50:11,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:50:11,382 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-10-09 13:50:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:12,490 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-09 13:50:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:12,490 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:50:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:12,549 INFO L225 Difference]: With dead ends: 28920 [2020-10-09 13:50:12,549 INFO L226 Difference]: Without dead ends: 28898 [2020-10-09 13:50:12,550 INFO L673 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 [2020-10-09 13:50:12,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-09 13:50:13,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-09 13:50:13,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-09 13:50:13,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-09 13:50:13,114 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-09 13:50:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:13,114 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-09 13:50:13,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:50:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-09 13:50:13,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:13,117 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:13,117 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:13,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:50:13,318 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]=== [2020-10-09 13:50:13,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:13,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-10-09 13:50:13,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:13,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286402883] [2020-10-09 13:50:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:13,382 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-09 13:50:13,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286402883] [2020-10-09 13:50:13,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929797197] [2020-10-09 13:50:13,383 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 [2020-10-09 13:50:13,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 13:50:13,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:50:13,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:50:13,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-09 13:50:13,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:13,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:50:13,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431506333] [2020-10-09 13:50:13,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:50:13,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:13,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:50:13,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:50:13,565 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-10-09 13:50:14,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:14,512 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-10-09 13:50:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:14,513 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:50:14,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:14,581 INFO L225 Difference]: With dead ends: 29038 [2020-10-09 13:50:14,581 INFO L226 Difference]: Without dead ends: 29018 [2020-10-09 13:50:14,581 INFO L673 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 [2020-10-09 13:50:14,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-10-09 13:50:14,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-10-09 13:50:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-09 13:50:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-10-09 13:50:14,990 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-10-09 13:50:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:14,990 INFO L481 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-10-09 13:50:14,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:50:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-10-09 13:50:14,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:14,993 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:14,993 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:15,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-09 13:50:15,194 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]=== [2020-10-09 13:50:15,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:15,195 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-10-09 13:50:15,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:15,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838962582] [2020-10-09 13:50:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-09 13:50:15,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838962582] [2020-10-09 13:50:15,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665194487] [2020-10-09 13:50:15,261 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 [2020-10-09 13:50:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:15,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:50:15,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-09 13:50:15,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:15,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:50:15,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361304308] [2020-10-09 13:50:15,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:50:15,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:15,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:50:15,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:50:15,442 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-10-09 13:50:16,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:16,517 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-10-09 13:50:16,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:16,517 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:50:16,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:16,580 INFO L225 Difference]: With dead ends: 29417 [2020-10-09 13:50:16,580 INFO L226 Difference]: Without dead ends: 29397 [2020-10-09 13:50:16,580 INFO L673 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 [2020-10-09 13:50:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-10-09 13:50:16,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-10-09 13:50:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-10-09 13:50:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-10-09 13:50:16,986 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-10-09 13:50:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:16,987 INFO L481 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-10-09 13:50:16,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:50:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-10-09 13:50:16,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:16,989 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:16,990 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:17,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:50:17,190 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]=== [2020-10-09 13:50:17,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:17,191 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-10-09 13:50:17,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:17,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044824230] [2020-10-09 13:50:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:50:17,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044824230] [2020-10-09 13:50:17,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830936601] [2020-10-09 13:50:17,252 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 [2020-10-09 13:50:17,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:50:17,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:50:17,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:50:17,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:17,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:50:17,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:17,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:50:17,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531306422] [2020-10-09 13:50:17,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:50:17,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:17,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:50:17,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:50:17,427 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-10-09 13:50:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:18,545 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-10-09 13:50:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:18,546 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:50:18,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:18,609 INFO L225 Difference]: With dead ends: 29064 [2020-10-09 13:50:18,609 INFO L226 Difference]: Without dead ends: 29037 [2020-10-09 13:50:18,609 INFO L673 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 [2020-10-09 13:50:18,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-10-09 13:50:18,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-10-09 13:50:18,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-10-09 13:50:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-10-09 13:50:19,015 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-10-09 13:50:19,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:19,015 INFO L481 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-10-09 13:50:19,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:50:19,015 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-10-09 13:50:19,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:19,018 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:19,018 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:19,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-10-09 13:50:19,219 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]=== [2020-10-09 13:50:19,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:19,219 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-10-09 13:50:19,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:19,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340929171] [2020-10-09 13:50:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:50:19,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340929171] [2020-10-09 13:50:19,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443646988] [2020-10-09 13:50:19,279 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 [2020-10-09 13:50:19,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:50:19,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:50:19,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:50:19,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:50:19,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:19,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:50:19,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306023432] [2020-10-09 13:50:19,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:50:19,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:19,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:50:19,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:50:19,464 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-10-09 13:50:20,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:20,429 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-10-09 13:50:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:20,429 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:50:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:20,492 INFO L225 Difference]: With dead ends: 28523 [2020-10-09 13:50:20,492 INFO L226 Difference]: Without dead ends: 28501 [2020-10-09 13:50:20,493 INFO L673 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 [2020-10-09 13:50:20,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-10-09 13:50:20,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-10-09 13:50:20,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-09 13:50:20,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-10-09 13:50:20,902 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-10-09 13:50:20,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:20,902 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-10-09 13:50:20,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:50:20,903 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-10-09 13:50:20,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:20,907 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:20,907 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:21,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:50:21,107 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]=== [2020-10-09 13:50:21,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:21,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-10-09 13:50:21,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:21,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733653489] [2020-10-09 13:50:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:21,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733653489] [2020-10-09 13:50:21,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896742874] [2020-10-09 13:50:21,170 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 [2020-10-09 13:50:21,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 13:50:21,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:50:21,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:50:21,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:21,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:21,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:50:21,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805310791] [2020-10-09 13:50:21,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:50:21,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:21,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:50:21,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:50:21,421 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-10-09 13:50:22,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:22,468 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-09 13:50:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:22,469 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:50:22,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:22,530 INFO L225 Difference]: With dead ends: 28636 [2020-10-09 13:50:22,530 INFO L226 Difference]: Without dead ends: 28616 [2020-10-09 13:50:22,531 INFO L673 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 [2020-10-09 13:50:22,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-09 13:50:22,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-10-09 13:50:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-10-09 13:50:22,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-10-09 13:50:22,920 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-10-09 13:50:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:22,921 INFO L481 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-10-09 13:50:22,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:50:22,921 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-10-09 13:50:22,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:22,923 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:22,924 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:23,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-09 13:50:23,130 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]=== [2020-10-09 13:50:23,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:23,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-10-09 13:50:23,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:23,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234497037] [2020-10-09 13:50:23,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:23,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234497037] [2020-10-09 13:50:23,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088076949] [2020-10-09 13:50:23,191 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 [2020-10-09 13:50:23,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 13:50:23,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:50:23,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:50:23,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:23,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:23,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:50:23,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126400562] [2020-10-09 13:50:23,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:50:23,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:23,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:50:23,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:50:23,572 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-10-09 13:50:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:24,589 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-09 13:50:24,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:24,589 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:50:24,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:24,649 INFO L225 Difference]: With dead ends: 28297 [2020-10-09 13:50:24,649 INFO L226 Difference]: Without dead ends: 28277 [2020-10-09 13:50:24,650 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-09 13:50:24,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-09 13:50:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-10-09 13:50:25,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-09 13:50:25,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-10-09 13:50:25,040 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-10-09 13:50:25,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:25,040 INFO L481 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-10-09 13:50:25,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:50:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-10-09 13:50:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:25,043 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:25,043 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:25,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:50:25,244 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]=== [2020-10-09 13:50:25,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:25,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-10-09 13:50:25,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:25,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318982204] [2020-10-09 13:50:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:25,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318982204] [2020-10-09 13:50:25,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023809881] [2020-10-09 13:50:25,310 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 [2020-10-09 13:50:25,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:50:25,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:50:25,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:50:25,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:25,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:25,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:50:25,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668102613] [2020-10-09 13:50:25,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:50:25,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:25,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:50:25,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:50:25,488 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-10-09 13:50:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:26,605 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-09 13:50:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:26,606 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:50:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:26,667 INFO L225 Difference]: With dead ends: 28565 [2020-10-09 13:50:26,667 INFO L226 Difference]: Without dead ends: 28538 [2020-10-09 13:50:26,667 INFO L673 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 [2020-10-09 13:50:26,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-09 13:50:27,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-09 13:50:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-09 13:50:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-09 13:50:27,062 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-09 13:50:27,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:27,063 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-09 13:50:27,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:50:27,063 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-09 13:50:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:27,066 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:27,066 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:27,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-09 13:50:27,267 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]=== [2020-10-09 13:50:27,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:27,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-10-09 13:50:27,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:27,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862601108] [2020-10-09 13:50:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:27,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862601108] [2020-10-09 13:50:27,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334849062] [2020-10-09 13:50:27,327 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 [2020-10-09 13:50:27,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:50:27,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:50:27,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:50:27,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-09 13:50:27,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:27,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:50:27,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565736788] [2020-10-09 13:50:27,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:50:27,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:27,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:50:27,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:50:27,522 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-10-09 13:50:28,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:28,558 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-09 13:50:28,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:28,559 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:50:28,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:28,628 INFO L225 Difference]: With dead ends: 28213 [2020-10-09 13:50:28,629 INFO L226 Difference]: Without dead ends: 28186 [2020-10-09 13:50:28,629 INFO L673 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 [2020-10-09 13:50:28,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-09 13:50:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-09 13:50:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-09 13:50:29,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-09 13:50:29,040 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-09 13:50:29,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:29,040 INFO L481 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-09 13:50:29,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:50:29,040 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-09 13:50:29,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:29,043 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:29,043 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:29,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:50:29,244 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]=== [2020-10-09 13:50:29,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:29,245 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-10-09 13:50:29,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:29,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895190536] [2020-10-09 13:50:29,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:50:29,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895190536] [2020-10-09 13:50:29,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:29,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:50:29,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267529040] [2020-10-09 13:50:29,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:50:29,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:29,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:50:29,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:50:29,308 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-10-09 13:50:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:30,243 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-10-09 13:50:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:30,243 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-09 13:50:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:30,305 INFO L225 Difference]: With dead ends: 28226 [2020-10-09 13:50:30,305 INFO L226 Difference]: Without dead ends: 28206 [2020-10-09 13:50:30,306 INFO L673 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 [2020-10-09 13:50:30,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-10-09 13:50:30,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-10-09 13:50:30,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-10-09 13:50:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-10-09 13:50:30,691 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-10-09 13:50:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:30,691 INFO L481 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-10-09 13:50:30,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:50:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-10-09 13:50:30,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:30,695 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:30,695 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:30,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-09 13:50:30,695 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]=== [2020-10-09 13:50:30,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:30,695 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-10-09 13:50:30,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:30,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056150411] [2020-10-09 13:50:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:50:30,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056150411] [2020-10-09 13:50:30,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:30,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:50:30,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785220244] [2020-10-09 13:50:30,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:50:30,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:30,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:50:30,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:50:30,763 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-10-09 13:50:31,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:31,652 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-10-09 13:50:31,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:31,652 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-09 13:50:31,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:31,712 INFO L225 Difference]: With dead ends: 27801 [2020-10-09 13:50:31,713 INFO L226 Difference]: Without dead ends: 27781 [2020-10-09 13:50:31,713 INFO L673 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 [2020-10-09 13:50:31,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-10-09 13:50:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-10-09 13:50:32,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-10-09 13:50:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-10-09 13:50:32,135 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-10-09 13:50:32,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:32,135 INFO L481 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-10-09 13:50:32,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:50:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-10-09 13:50:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:32,138 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:32,138 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:32,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-09 13:50:32,138 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]=== [2020-10-09 13:50:32,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:32,139 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-10-09 13:50:32,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:32,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109632663] [2020-10-09 13:50:32,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:50:32,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109632663] [2020-10-09 13:50:32,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:32,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:50:32,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576565305] [2020-10-09 13:50:32,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:50:32,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:32,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:50:32,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:50:32,222 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-10-09 13:50:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:33,413 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-10-09 13:50:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:33,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-09 13:50:33,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:33,498 INFO L225 Difference]: With dead ends: 27548 [2020-10-09 13:50:33,498 INFO L226 Difference]: Without dead ends: 27521 [2020-10-09 13:50:33,499 INFO L673 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 [2020-10-09 13:50:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-10-09 13:50:33,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-10-09 13:50:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-10-09 13:50:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-10-09 13:50:33,952 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-10-09 13:50:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:33,952 INFO L481 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-10-09 13:50:33,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:50:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-10-09 13:50:33,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:33,955 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:33,955 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:33,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-09 13:50:33,955 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]=== [2020-10-09 13:50:33,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:33,955 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-10-09 13:50:33,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:33,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973146745] [2020-10-09 13:50:33,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:50:34,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973146745] [2020-10-09 13:50:34,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:34,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:50:34,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619597332] [2020-10-09 13:50:34,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:50:34,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:34,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:50:34,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:50:34,021 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-10-09 13:50:34,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:34,912 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-10-09 13:50:34,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:34,912 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-09 13:50:34,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:34,972 INFO L225 Difference]: With dead ends: 27167 [2020-10-09 13:50:34,972 INFO L226 Difference]: Without dead ends: 27147 [2020-10-09 13:50:34,972 INFO L673 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 [2020-10-09 13:50:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-10-09 13:50:35,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-10-09 13:50:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-10-09 13:50:35,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-10-09 13:50:35,455 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-10-09 13:50:35,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:35,456 INFO L481 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-10-09 13:50:35,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:50:35,456 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-10-09 13:50:35,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:35,459 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:35,459 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:35,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-09 13:50:35,459 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]=== [2020-10-09 13:50:35,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:35,459 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-10-09 13:50:35,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:35,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111583023] [2020-10-09 13:50:35,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:50:35,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111583023] [2020-10-09 13:50:35,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:35,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:50:35,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523906054] [2020-10-09 13:50:35,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:50:35,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:35,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:50:35,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:50:35,531 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-10-09 13:50:36,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:36,488 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-10-09 13:50:36,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:36,489 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-09 13:50:36,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:36,562 INFO L225 Difference]: With dead ends: 26955 [2020-10-09 13:50:36,562 INFO L226 Difference]: Without dead ends: 26928 [2020-10-09 13:50:36,562 INFO L673 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 [2020-10-09 13:50:36,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-10-09 13:50:36,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-10-09 13:50:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-10-09 13:50:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-10-09 13:50:36,933 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-10-09 13:50:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:36,933 INFO L481 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-10-09 13:50:36,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:50:36,933 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-10-09 13:50:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:36,937 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:36,937 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:36,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-09 13:50:36,937 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]=== [2020-10-09 13:50:36,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:36,937 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-10-09 13:50:36,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:36,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179250539] [2020-10-09 13:50:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:50:37,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179250539] [2020-10-09 13:50:37,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:37,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:50:37,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239098763] [2020-10-09 13:50:37,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:50:37,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:37,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:50:37,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:50:37,009 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-10-09 13:50:38,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:38,037 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-10-09 13:50:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:50:38,038 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-09 13:50:38,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:38,094 INFO L225 Difference]: With dead ends: 26632 [2020-10-09 13:50:38,094 INFO L226 Difference]: Without dead ends: 26605 [2020-10-09 13:50:38,094 INFO L673 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 [2020-10-09 13:50:38,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-10-09 13:50:38,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-10-09 13:50:38,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-10-09 13:50:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-10-09 13:50:38,445 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-10-09 13:50:38,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:38,445 INFO L481 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-10-09 13:50:38,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:50:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-10-09 13:50:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:50:38,449 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:38,449 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:38,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-09 13:50:38,449 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]=== [2020-10-09 13:50:38,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:38,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-10-09 13:50:38,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:38,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773379838] [2020-10-09 13:50:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 13:50:38,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773379838] [2020-10-09 13:50:38,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:38,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:50:38,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426573876] [2020-10-09 13:50:38,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:50:38,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:38,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:50:38,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:50:38,482 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-10-09 13:50:38,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:38,638 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-10-09 13:50:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:50:38,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-09 13:50:38,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:38,664 INFO L225 Difference]: With dead ends: 11919 [2020-10-09 13:50:38,665 INFO L226 Difference]: Without dead ends: 11887 [2020-10-09 13:50:38,665 INFO L673 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 [2020-10-09 13:50:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-10-09 13:50:38,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-10-09 13:50:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-09 13:50:38,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-09 13:50:38,895 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-09 13:50:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:38,896 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-09 13:50:38,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:50:38,896 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-09 13:50:38,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-09 13:50:38,899 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:38,899 INFO L421 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:38,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-09 13:50:38,899 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]=== [2020-10-09 13:50:38,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:38,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-10-09 13:50:38,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:38,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644478276] [2020-10-09 13:50:38,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:50:38,907 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:50:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 13:50:38,912 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 13:50:38,919 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-09 13:50:38,920 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 13:50:38,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-09 13:50:38,920 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-09 13:50:38,921 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-09 13:50:38,921 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-09 13:50:38,943 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,943 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,943 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,943 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,943 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,943 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,944 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,944 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,944 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,944 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,944 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,944 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,944 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,944 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,945 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,945 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,945 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,945 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,945 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,945 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,945 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,946 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,946 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,946 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,946 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,946 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,946 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,946 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,946 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,947 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,947 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,948 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,949 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,949 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,949 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,949 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,951 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,951 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,951 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,951 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,952 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,952 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,957 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,957 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,957 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,957 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,957 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,957 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,959 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,959 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,959 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,959 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,959 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,960 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,961 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,961 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,961 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,961 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,962 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,962 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,962 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,962 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,963 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,964 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,964 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,964 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,964 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,964 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,965 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,965 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,965 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,966 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,966 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,967 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,967 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,967 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,967 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,968 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,968 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,969 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,969 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,969 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,975 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,975 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,975 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:50:38,976 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-09 13:50:38,977 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:50:38,977 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:50:38,977 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:50:38,977 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:50:38,977 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:50:38,977 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:50:38,977 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:50:38,977 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:50:38,979 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:50:38,979 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-09 13:50:38,979 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-09 13:50:38,979 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-10-09 13:50:38,998 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-10-09 13:50:38,998 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-09 13:50:38,999 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. [2020-10-09 13:50:39,005 INFO L117 LiptonReduction]: Number of co-enabled transitions 2832 [2020-10-09 13:50:41,021 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-09 13:50:41,359 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-09 13:50:41,529 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-09 13:50:41,547 INFO L132 LiptonReduction]: Checked pairs total: 4694 [2020-10-09 13:50:41,548 INFO L134 LiptonReduction]: Total number of compositions: 121 [2020-10-09 13:50:41,548 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-09 13:50:43,184 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-09 13:50:43,184 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-09 13:50:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-09 13:50:43,185 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:43,185 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-09 13:50:43,185 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]=== [2020-10-09 13:50:43,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:43,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-10-09 13:50:43,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:43,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42790197] [2020-10-09 13:50:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:50:43,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42790197] [2020-10-09 13:50:43,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:43,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-09 13:50:43,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677601123] [2020-10-09 13:50:43,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 13:50:43,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:43,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 13:50:43,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 13:50:43,208 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-09 13:50:43,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:43,346 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-09 13:50:43,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 13:50:43,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-09 13:50:43,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:43,393 INFO L225 Difference]: With dead ends: 17885 [2020-10-09 13:50:43,393 INFO L226 Difference]: Without dead ends: 16791 [2020-10-09 13:50:43,393 INFO L673 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 [2020-10-09 13:50:43,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-09 13:50:44,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-09 13:50:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-09 13:50:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-09 13:50:44,138 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-09 13:50:44,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:44,138 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-09 13:50:44,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 13:50:44,138 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-09 13:50:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 13:50:44,139 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:44,139 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:44,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-09 13:50:44,139 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]=== [2020-10-09 13:50:44,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:44,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-10-09 13:50:44,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:44,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014269487] [2020-10-09 13:50:44,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:50:44,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014269487] [2020-10-09 13:50:44,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:44,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:50:44,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895926427] [2020-10-09 13:50:44,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:50:44,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:44,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:50:44,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:50:44,167 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-09 13:50:44,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:44,431 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-09 13:50:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:50:44,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-09 13:50:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:44,519 INFO L225 Difference]: With dead ends: 30985 [2020-10-09 13:50:44,519 INFO L226 Difference]: Without dead ends: 30977 [2020-10-09 13:50:44,519 INFO L673 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 [2020-10-09 13:50:45,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-09 13:50:47,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-09 13:50:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-09 13:50:47,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-09 13:50:47,298 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-09 13:50:47,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:47,298 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-09 13:50:47,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:50:47,298 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-09 13:50:47,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 13:50:47,298 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:47,299 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:47,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-09 13:50:47,299 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]=== [2020-10-09 13:50:47,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:47,299 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-10-09 13:50:47,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:47,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015216495] [2020-10-09 13:50:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:50:47,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015216495] [2020-10-09 13:50:47,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:47,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:50:47,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576968849] [2020-10-09 13:50:47,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:50:47,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:47,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:50:47,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:50:47,333 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-09 13:50:47,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:47,634 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-09 13:50:47,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:50:47,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-09 13:50:47,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:47,736 INFO L225 Difference]: With dead ends: 36296 [2020-10-09 13:50:47,736 INFO L226 Difference]: Without dead ends: 36280 [2020-10-09 13:50:47,736 INFO L673 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 [2020-10-09 13:50:48,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-09 13:50:48,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-09 13:50:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-09 13:50:48,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-09 13:50:48,888 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-09 13:50:48,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:48,888 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-09 13:50:48,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:50:48,889 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-09 13:50:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 13:50:48,889 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:48,889 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:48,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-09 13:50:48,890 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]=== [2020-10-09 13:50:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:48,890 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-10-09 13:50:48,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:48,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646786235] [2020-10-09 13:50:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:50:48,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646786235] [2020-10-09 13:50:48,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791047814] [2020-10-09 13:50:48,938 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 [2020-10-09 13:50:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:49,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:50:49,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:50:49,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:49,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:50:49,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735314143] [2020-10-09 13:50:49,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:50:49,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:49,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:50:49,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:50:49,095 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-10-09 13:50:49,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:49,767 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-09 13:50:49,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:50:49,768 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-09 13:50:49,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:49,927 INFO L225 Difference]: With dead ends: 56720 [2020-10-09 13:50:49,928 INFO L226 Difference]: Without dead ends: 56704 [2020-10-09 13:50:49,928 INFO L673 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 [2020-10-09 13:50:52,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-09 13:50:53,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-09 13:50:53,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-09 13:50:53,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-09 13:50:53,521 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-09 13:50:53,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:53,521 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-09 13:50:53,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:50:53,521 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-09 13:50:53,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 13:50:53,521 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:53,522 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:53,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-09 13:50:53,722 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]=== [2020-10-09 13:50:53,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:53,723 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-10-09 13:50:53,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:53,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135833511] [2020-10-09 13:50:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:50:53,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135833511] [2020-10-09 13:50:53,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:53,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:50:53,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564463645] [2020-10-09 13:50:53,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:50:53,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:53,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:50:53,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:50:53,766 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-09 13:50:54,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:54,383 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-09 13:50:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:50:54,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-09 13:50:54,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:54,546 INFO L225 Difference]: With dead ends: 58078 [2020-10-09 13:50:54,546 INFO L226 Difference]: Without dead ends: 58061 [2020-10-09 13:50:54,546 INFO L673 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 [2020-10-09 13:50:55,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-09 13:50:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-09 13:50:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-09 13:50:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-09 13:50:56,652 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-09 13:50:56,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:56,652 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-09 13:50:56,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:50:56,652 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-09 13:50:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-09 13:50:56,653 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:56,653 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:56,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-09 13:50:56,653 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]=== [2020-10-09 13:50:56,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:56,653 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-10-09 13:50:56,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:56,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524573665] [2020-10-09 13:50:56,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:50:56,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524573665] [2020-10-09 13:50:56,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:50:56,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:50:56,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789178682] [2020-10-09 13:50:56,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:50:56,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:56,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:50:56,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:50:56,687 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-09 13:50:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:57,014 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-09 13:50:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:50:57,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-09 13:50:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:57,134 INFO L225 Difference]: With dead ends: 41885 [2020-10-09 13:50:57,134 INFO L226 Difference]: Without dead ends: 41856 [2020-10-09 13:50:57,134 INFO L673 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 [2020-10-09 13:50:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-09 13:50:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-09 13:50:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-09 13:50:58,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-09 13:50:58,416 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-09 13:50:58,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:50:58,416 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-09 13:50:58,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:50:58,416 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-09 13:50:58,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:50:58,417 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:50:58,417 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:50:58,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-09 13:50:58,417 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]=== [2020-10-09 13:50:58,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:50:58,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-10-09 13:50:58,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:50:58,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151520479] [2020-10-09 13:50:58,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:50:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:50:58,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151520479] [2020-10-09 13:50:58,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865607506] [2020-10-09 13:50:58,467 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 [2020-10-09 13:50:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:50:58,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:50:58,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:50:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:50:58,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:50:58,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:50:58,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494684706] [2020-10-09 13:50:58,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:50:58,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:50:58,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:50:58,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:50:58,610 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-10-09 13:50:59,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:50:59,258 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-09 13:50:59,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:50:59,259 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-09 13:50:59,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:50:59,454 INFO L225 Difference]: With dead ends: 66831 [2020-10-09 13:50:59,454 INFO L226 Difference]: Without dead ends: 66807 [2020-10-09 13:50:59,455 INFO L673 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 [2020-10-09 13:51:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-09 13:51:03,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-09 13:51:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-09 13:51:03,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-09 13:51:03,767 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-09 13:51:03,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:03,768 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-09 13:51:03,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:51:03,768 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-09 13:51:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:51:03,768 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:03,769 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:03,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-09 13:51:03,982 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]=== [2020-10-09 13:51:03,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:03,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-10-09 13:51:03,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:03,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275117420] [2020-10-09 13:51:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:51:04,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275117420] [2020-10-09 13:51:04,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384596714] [2020-10-09 13:51:04,026 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 [2020-10-09 13:51:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:04,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:51:04,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:51:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:51:04,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:51:04,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:51:04,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536409793] [2020-10-09 13:51:04,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:51:04,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:04,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:51:04,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:51:04,175 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-10-09 13:51:04,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:04,892 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-10-09 13:51:04,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:51:04,893 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-09 13:51:04,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:05,099 INFO L225 Difference]: With dead ends: 69484 [2020-10-09 13:51:05,100 INFO L226 Difference]: Without dead ends: 69451 [2020-10-09 13:51:05,100 INFO L673 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 [2020-10-09 13:51:05,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-09 13:51:06,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-10-09 13:51:06,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-10-09 13:51:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-10-09 13:51:06,841 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-10-09 13:51:06,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:06,841 INFO L481 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-10-09 13:51:06,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:51:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-10-09 13:51:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:51:06,842 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:06,842 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:07,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:51:07,043 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]=== [2020-10-09 13:51:07,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:07,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-10-09 13:51:07,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:07,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343405837] [2020-10-09 13:51:07,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:51:07,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343405837] [2020-10-09 13:51:07,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:51:07,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:51:07,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665930086] [2020-10-09 13:51:07,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:51:07,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:07,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:51:07,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:51:07,088 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-10-09 13:51:08,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:08,307 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-10-09 13:51:08,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:51:08,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-09 13:51:08,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:08,520 INFO L225 Difference]: With dead ends: 70510 [2020-10-09 13:51:08,521 INFO L226 Difference]: Without dead ends: 70477 [2020-10-09 13:51:08,521 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-09 13:51:09,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-10-09 13:51:10,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-10-09 13:51:10,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-10-09 13:51:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-10-09 13:51:10,307 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-10-09 13:51:10,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:10,307 INFO L481 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-10-09 13:51:10,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:51:10,307 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-10-09 13:51:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 13:51:10,308 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:10,308 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:10,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-09 13:51:10,308 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]=== [2020-10-09 13:51:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:10,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-10-09 13:51:10,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:10,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872441518] [2020-10-09 13:51:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:51:10,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872441518] [2020-10-09 13:51:10,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:51:10,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:51:10,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811063858] [2020-10-09 13:51:10,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:51:10,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:10,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:51:10,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:51:10,357 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-10-09 13:51:11,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:11,017 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-09 13:51:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:51:11,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-09 13:51:11,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:11,219 INFO L225 Difference]: With dead ends: 70096 [2020-10-09 13:51:11,219 INFO L226 Difference]: Without dead ends: 70063 [2020-10-09 13:51:11,219 INFO L673 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 [2020-10-09 13:51:12,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-09 13:51:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-09 13:51:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-09 13:51:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-09 13:51:13,569 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-09 13:51:13,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:13,570 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-09 13:51:13,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:51:13,570 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-09 13:51:13,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:51:13,571 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:13,571 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:13,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-09 13:51:13,571 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]=== [2020-10-09 13:51:13,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:13,571 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-10-09 13:51:13,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:13,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174243824] [2020-10-09 13:51:13,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:51:13,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174243824] [2020-10-09 13:51:13,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957354443] [2020-10-09 13:51:13,657 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 [2020-10-09 13:51:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:13,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:51:13,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:51:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:51:13,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:51:13,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:51:13,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825243671] [2020-10-09 13:51:13,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:51:13,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:13,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:51:13,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:51:13,851 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-10-09 13:51:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:15,307 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-09 13:51:15,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:51:15,308 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-09 13:51:15,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:15,594 INFO L225 Difference]: With dead ends: 100731 [2020-10-09 13:51:15,595 INFO L226 Difference]: Without dead ends: 100715 [2020-10-09 13:51:15,595 INFO L673 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 [2020-10-09 13:51:16,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-09 13:51:18,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-10-09 13:51:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-10-09 13:51:18,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-10-09 13:51:18,742 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-10-09 13:51:18,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:18,742 INFO L481 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-10-09 13:51:18,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:51:18,742 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-10-09 13:51:18,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:51:18,743 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:18,743 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:18,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-10-09 13:51:18,944 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]=== [2020-10-09 13:51:18,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:18,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-10-09 13:51:18,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:18,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196019983] [2020-10-09 13:51:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:51:19,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196019983] [2020-10-09 13:51:19,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442608083] [2020-10-09 13:51:19,009 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 [2020-10-09 13:51:19,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:51:19,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:51:19,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:51:19,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:51:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:51:19,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:51:19,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:51:19,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053105472] [2020-10-09 13:51:19,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:51:19,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:19,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:51:19,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:51:19,204 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-10-09 13:51:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:20,654 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-10-09 13:51:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:51:20,654 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-09 13:51:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:20,930 INFO L225 Difference]: With dead ends: 99876 [2020-10-09 13:51:20,930 INFO L226 Difference]: Without dead ends: 99855 [2020-10-09 13:51:20,931 INFO L673 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 [2020-10-09 13:51:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-10-09 13:51:23,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-10-09 13:51:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-09 13:51:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-09 13:51:23,153 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-09 13:51:23,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:23,153 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-09 13:51:23,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:51:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-09 13:51:23,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:51:23,154 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:23,154 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:23,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:51:23,355 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]=== [2020-10-09 13:51:23,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:23,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-10-09 13:51:23,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:23,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876658932] [2020-10-09 13:51:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:51:23,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876658932] [2020-10-09 13:51:23,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552713213] [2020-10-09 13:51:23,423 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 [2020-10-09 13:51:23,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 13:51:23,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:51:23,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:51:23,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:51:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:51:23,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:51:23,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:51:23,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309882039] [2020-10-09 13:51:23,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:51:23,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:23,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:51:23,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:51:23,615 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-10-09 13:51:25,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:25,543 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-10-09 13:51:25,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:51:25,544 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-09 13:51:25,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:25,827 INFO L225 Difference]: With dead ends: 100071 [2020-10-09 13:51:25,827 INFO L226 Difference]: Without dead ends: 100055 [2020-10-09 13:51:25,827 INFO L673 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 [2020-10-09 13:51:26,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-10-09 13:51:28,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-10-09 13:51:28,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-09 13:51:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-10-09 13:51:28,109 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-10-09 13:51:28,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:28,109 INFO L481 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-10-09 13:51:28,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:51:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-10-09 13:51:28,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:51:28,110 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:28,110 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:28,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-09 13:51:28,312 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]=== [2020-10-09 13:51:28,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:28,313 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-10-09 13:51:28,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:28,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138556682] [2020-10-09 13:51:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:51:28,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138556682] [2020-10-09 13:51:28,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782816636] [2020-10-09 13:51:28,385 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 [2020-10-09 13:51:28,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:51:28,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:51:28,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:51:28,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:51:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:51:28,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:51:28,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:51:28,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095546174] [2020-10-09 13:51:28,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:51:28,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:28,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:51:28,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:51:28,580 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-10-09 13:51:29,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:29,992 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-10-09 13:51:29,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:51:29,992 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-09 13:51:29,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:30,276 INFO L225 Difference]: With dead ends: 99523 [2020-10-09 13:51:30,276 INFO L226 Difference]: Without dead ends: 99502 [2020-10-09 13:51:30,277 INFO L673 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 [2020-10-09 13:51:31,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-10-09 13:51:32,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-10-09 13:51:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-10-09 13:51:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-10-09 13:51:32,974 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-10-09 13:51:32,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:32,974 INFO L481 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-10-09 13:51:32,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:51:32,975 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-10-09 13:51:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:51:32,975 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:32,976 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:33,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-09 13:51:33,176 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]=== [2020-10-09 13:51:33,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:33,177 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-10-09 13:51:33,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:33,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366512459] [2020-10-09 13:51:33,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:51:33,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366512459] [2020-10-09 13:51:33,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:51:33,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:51:33,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924940422] [2020-10-09 13:51:33,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:51:33,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:33,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:51:33,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:51:33,243 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-10-09 13:51:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:34,670 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-10-09 13:51:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:51:34,670 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-09 13:51:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:34,949 INFO L225 Difference]: With dead ends: 99710 [2020-10-09 13:51:34,950 INFO L226 Difference]: Without dead ends: 99694 [2020-10-09 13:51:34,950 INFO L673 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 [2020-10-09 13:51:35,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-10-09 13:51:37,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-10-09 13:51:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-10-09 13:51:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-10-09 13:51:37,647 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-10-09 13:51:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:37,647 INFO L481 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-10-09 13:51:37,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:51:37,647 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-10-09 13:51:37,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:51:37,648 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:37,648 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:37,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-09 13:51:37,649 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]=== [2020-10-09 13:51:37,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:37,649 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-10-09 13:51:37,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:37,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363115271] [2020-10-09 13:51:37,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:51:37,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363115271] [2020-10-09 13:51:37,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:51:37,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:51:37,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447404530] [2020-10-09 13:51:37,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:51:37,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:37,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:51:37,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:51:37,715 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-10-09 13:51:39,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:39,120 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-10-09 13:51:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:51:39,121 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-09 13:51:39,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:39,396 INFO L225 Difference]: With dead ends: 98863 [2020-10-09 13:51:39,397 INFO L226 Difference]: Without dead ends: 98841 [2020-10-09 13:51:39,397 INFO L673 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 [2020-10-09 13:51:40,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-10-09 13:51:41,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-10-09 13:51:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-10-09 13:51:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-10-09 13:51:41,592 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-10-09 13:51:41,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:41,592 INFO L481 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-10-09 13:51:41,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:51:41,592 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-10-09 13:51:41,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-09 13:51:41,593 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:41,594 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:41,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-09 13:51:41,594 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]=== [2020-10-09 13:51:41,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:41,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-10-09 13:51:41,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:41,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583323712] [2020-10-09 13:51:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:51:41,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583323712] [2020-10-09 13:51:41,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:51:41,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:51:41,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653798364] [2020-10-09 13:51:41,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:51:41,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:41,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:51:41,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:51:41,624 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-10-09 13:51:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:41,978 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-10-09 13:51:41,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:51:41,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-09 13:51:41,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:42,119 INFO L225 Difference]: With dead ends: 46463 [2020-10-09 13:51:42,119 INFO L226 Difference]: Without dead ends: 46417 [2020-10-09 13:51:42,119 INFO L673 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 [2020-10-09 13:51:42,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-10-09 13:51:43,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-10-09 13:51:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-09 13:51:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-09 13:51:43,930 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-09 13:51:43,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:43,930 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-09 13:51:43,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:51:43,930 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-09 13:51:43,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 13:51:43,932 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:43,932 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:43,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-09 13:51:43,932 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]=== [2020-10-09 13:51:43,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:43,932 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-10-09 13:51:43,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:43,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699208628] [2020-10-09 13:51:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:51:43,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699208628] [2020-10-09 13:51:43,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330811193] [2020-10-09 13:51:43,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-09 13:51:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:44,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:51:44,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:51:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:51:44,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:51:44,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:51:44,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251461988] [2020-10-09 13:51:44,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:51:44,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:44,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:51:44,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:51:44,135 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-10-09 13:51:44,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:44,985 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-09 13:51:44,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:51:44,986 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-09 13:51:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:45,210 INFO L225 Difference]: With dead ends: 75380 [2020-10-09 13:51:45,210 INFO L226 Difference]: Without dead ends: 75344 [2020-10-09 13:51:45,210 INFO L673 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 [2020-10-09 13:51:46,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-09 13:51:46,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-09 13:51:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-09 13:51:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-09 13:51:47,114 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-09 13:51:47,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:47,114 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-09 13:51:47,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:51:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-09 13:51:47,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 13:51:47,116 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:47,116 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:47,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:51:47,317 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]=== [2020-10-09 13:51:47,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:47,317 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-10-09 13:51:47,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:47,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481320185] [2020-10-09 13:51:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:51:47,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481320185] [2020-10-09 13:51:47,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175716550] [2020-10-09 13:51:47,363 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 [2020-10-09 13:51:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:47,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:51:47,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:51:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:51:47,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:51:47,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:51:47,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998124269] [2020-10-09 13:51:47,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:51:47,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:47,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:51:47,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:51:47,516 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-10-09 13:51:48,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:48,285 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-10-09 13:51:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:51:48,285 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-09 13:51:48,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:48,523 INFO L225 Difference]: With dead ends: 79487 [2020-10-09 13:51:48,523 INFO L226 Difference]: Without dead ends: 79445 [2020-10-09 13:51:48,523 INFO L673 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 [2020-10-09 13:51:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-10-09 13:51:50,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-10-09 13:51:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-10-09 13:51:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-10-09 13:51:50,987 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-10-09 13:51:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:50,988 INFO L481 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-10-09 13:51:50,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:51:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-10-09 13:51:50,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 13:51:50,989 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:50,990 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:51,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:51:51,190 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]=== [2020-10-09 13:51:51,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:51,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-10-09 13:51:51,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:51,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744786753] [2020-10-09 13:51:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:51:51,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744786753] [2020-10-09 13:51:51,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442193525] [2020-10-09 13:51:51,243 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 [2020-10-09 13:51:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:51,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:51:51,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:51:51,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:51:51,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:51:51,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:51:51,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133088866] [2020-10-09 13:51:51,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:51:51,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:51,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:51:51,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:51:51,402 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-10-09 13:51:52,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:52,184 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-10-09 13:51:52,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:51:52,185 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-09 13:51:52,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:52,436 INFO L225 Difference]: With dead ends: 82728 [2020-10-09 13:51:52,436 INFO L226 Difference]: Without dead ends: 82673 [2020-10-09 13:51:52,436 INFO L673 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 [2020-10-09 13:51:53,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-10-09 13:51:54,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-10-09 13:51:54,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-10-09 13:51:54,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-10-09 13:51:54,533 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-10-09 13:51:54,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:54,533 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-10-09 13:51:54,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:51:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-10-09 13:51:54,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 13:51:54,535 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:54,535 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:54,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:51:54,736 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]=== [2020-10-09 13:51:54,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:54,737 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-10-09 13:51:54,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:54,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616466463] [2020-10-09 13:51:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:51:54,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616466463] [2020-10-09 13:51:54,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:51:54,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:51:54,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754456765] [2020-10-09 13:51:54,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:51:54,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:54,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:51:54,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:51:54,785 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-10-09 13:51:55,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:55,513 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-10-09 13:51:55,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:51:55,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-09 13:51:55,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:55,766 INFO L225 Difference]: With dead ends: 83507 [2020-10-09 13:51:55,766 INFO L226 Difference]: Without dead ends: 83452 [2020-10-09 13:51:55,766 INFO L673 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 [2020-10-09 13:51:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-10-09 13:51:58,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-10-09 13:51:58,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-10-09 13:51:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-10-09 13:51:58,374 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-10-09 13:51:58,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:51:58,375 INFO L481 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-10-09 13:51:58,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:51:58,375 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-10-09 13:51:58,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 13:51:58,377 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:51:58,377 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:51:58,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-09 13:51:58,377 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]=== [2020-10-09 13:51:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:51:58,377 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-10-09 13:51:58,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:51:58,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413027960] [2020-10-09 13:51:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:51:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:51:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:51:58,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413027960] [2020-10-09 13:51:58,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:51:58,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:51:58,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395651448] [2020-10-09 13:51:58,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:51:58,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:51:58,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:51:58,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:51:58,420 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-10-09 13:51:59,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:51:59,234 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-10-09 13:51:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:51:59,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-09 13:51:59,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:51:59,490 INFO L225 Difference]: With dead ends: 83523 [2020-10-09 13:51:59,491 INFO L226 Difference]: Without dead ends: 83468 [2020-10-09 13:51:59,491 INFO L673 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 [2020-10-09 13:52:00,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-10-09 13:52:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-10-09 13:52:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-10-09 13:52:01,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-10-09 13:52:01,536 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-10-09 13:52:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:52:01,536 INFO L481 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-10-09 13:52:01,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:52:01,536 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-10-09 13:52:01,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-09 13:52:01,538 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:52:01,538 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:52:01,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-09 13:52:01,539 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]=== [2020-10-09 13:52:01,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:52:01,539 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-10-09 13:52:01,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:52:01,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326132822] [2020-10-09 13:52:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:52:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:52:01,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326132822] [2020-10-09 13:52:01,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:52:01,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:52:01,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024188679] [2020-10-09 13:52:01,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:52:01,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:52:01,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:52:01,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:52:01,584 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-10-09 13:52:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:52:02,322 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-10-09 13:52:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:52:02,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-09 13:52:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:52:02,572 INFO L225 Difference]: With dead ends: 83918 [2020-10-09 13:52:02,572 INFO L226 Difference]: Without dead ends: 83863 [2020-10-09 13:52:02,573 INFO L673 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 [2020-10-09 13:52:03,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-10-09 13:52:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-10-09 13:52:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-09 13:52:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-09 13:52:05,150 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-09 13:52:05,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:52:05,150 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-09 13:52:05,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:52:05,150 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-09 13:52:05,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:52:05,153 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:52:05,153 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:52:05,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-09 13:52:05,154 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]=== [2020-10-09 13:52:05,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:52:05,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-10-09 13:52:05,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:52:05,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880118738] [2020-10-09 13:52:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:52:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:52:05,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880118738] [2020-10-09 13:52:05,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061876136] [2020-10-09 13:52:05,218 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 [2020-10-09 13:52:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:05,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:52:05,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:52:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:52:05,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:52:05,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:52:05,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965043853] [2020-10-09 13:52:05,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:52:05,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:52:05,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:52:05,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:52:05,412 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-10-09 13:52:07,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:52:07,181 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-09 13:52:07,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:52:07,182 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:52:07,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:52:07,572 INFO L225 Difference]: With dead ends: 122892 [2020-10-09 13:52:07,573 INFO L226 Difference]: Without dead ends: 122862 [2020-10-09 13:52:07,575 INFO L673 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 [2020-10-09 13:52:08,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-09 13:52:10,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-10-09 13:52:10,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-10-09 13:52:10,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-10-09 13:52:10,345 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-10-09 13:52:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:52:10,345 INFO L481 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-10-09 13:52:10,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:52:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-10-09 13:52:10,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:52:10,348 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:52:10,348 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:52:10,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-09 13:52:10,549 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]=== [2020-10-09 13:52:10,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:52:10,550 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-10-09 13:52:10,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:52:10,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317511563] [2020-10-09 13:52:10,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:52:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:52:10,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317511563] [2020-10-09 13:52:10,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753491532] [2020-10-09 13:52:10,614 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 [2020-10-09 13:52:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:10,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:52:10,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:52:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:52:10,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:52:10,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:52:10,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249983078] [2020-10-09 13:52:10,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:52:10,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:52:10,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:52:10,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:52:10,808 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-10-09 13:52:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:52:12,955 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-10-09 13:52:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:52:12,956 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:52:12,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:52:13,316 INFO L225 Difference]: With dead ends: 121590 [2020-10-09 13:52:13,316 INFO L226 Difference]: Without dead ends: 121560 [2020-10-09 13:52:13,316 INFO L673 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 [2020-10-09 13:52:14,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-10-09 13:52:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-10-09 13:52:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-10-09 13:52:16,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-10-09 13:52:16,053 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-10-09 13:52:16,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:52:16,054 INFO L481 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-10-09 13:52:16,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:52:16,054 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-10-09 13:52:16,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:52:16,057 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:52:16,057 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:52:16,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:52:16,264 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]=== [2020-10-09 13:52:16,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:52:16,264 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-10-09 13:52:16,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:52:16,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534615926] [2020-10-09 13:52:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:52:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:52:16,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534615926] [2020-10-09 13:52:16,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121472320] [2020-10-09 13:52:16,331 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 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 [2020-10-09 13:52:16,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:52:16,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:52:16,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:52:16,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:52:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:52:16,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:52:16,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:52:16,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18531842] [2020-10-09 13:52:16,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:52:16,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:52:16,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:52:16,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:52:16,524 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-10-09 13:52:18,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:52:18,115 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-10-09 13:52:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:52:18,115 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:52:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:52:18,461 INFO L225 Difference]: With dead ends: 120395 [2020-10-09 13:52:18,461 INFO L226 Difference]: Without dead ends: 120362 [2020-10-09 13:52:18,462 INFO L673 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 [2020-10-09 13:52:19,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-10-09 13:52:21,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-10-09 13:52:21,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-10-09 13:52:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-10-09 13:52:21,727 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-10-09 13:52:21,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:52:21,727 INFO L481 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-10-09 13:52:21,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:52:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-10-09 13:52:21,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:52:21,730 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:52:21,730 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:52:21,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-09 13:52:21,931 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]=== [2020-10-09 13:52:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:52:21,932 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-10-09 13:52:21,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:52:21,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270653164] [2020-10-09 13:52:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:52:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:52:22,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270653164] [2020-10-09 13:52:22,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146915833] [2020-10-09 13:52:22,001 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 [2020-10-09 13:52:22,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:52:22,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:52:22,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:52:22,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:52:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:52:22,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:52:22,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:52:22,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51129498] [2020-10-09 13:52:22,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:52:22,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:52:22,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:52:22,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:52:22,200 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-10-09 13:52:23,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:52:23,865 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-10-09 13:52:23,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:52:23,866 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:52:23,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:52:24,220 INFO L225 Difference]: With dead ends: 119346 [2020-10-09 13:52:24,221 INFO L226 Difference]: Without dead ends: 119313 [2020-10-09 13:52:24,221 INFO L673 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 [2020-10-09 13:52:25,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-10-09 13:52:26,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-10-09 13:52:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-09 13:52:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-09 13:52:26,870 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-09 13:52:26,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:52:26,870 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-09 13:52:26,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:52:26,871 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-09 13:52:26,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:52:26,873 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:52:26,873 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:52:27,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-09 13:52:27,074 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]=== [2020-10-09 13:52:27,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:52:27,074 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-10-09 13:52:27,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:52:27,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112539127] [2020-10-09 13:52:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:52:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:52:27,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112539127] [2020-10-09 13:52:27,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495040623] [2020-10-09 13:52:27,143 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 [2020-10-09 13:52:27,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 13:52:27,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:52:27,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:52:27,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:52:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:52:27,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:52:27,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:52:27,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908002153] [2020-10-09 13:52:27,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:52:27,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:52:27,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:52:27,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:52:27,341 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-10-09 13:52:29,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:52:29,108 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-10-09 13:52:29,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:52:29,109 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:52:29,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:52:29,460 INFO L225 Difference]: With dead ends: 119770 [2020-10-09 13:52:29,460 INFO L226 Difference]: Without dead ends: 119740 [2020-10-09 13:52:29,461 INFO L673 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 [2020-10-09 13:52:31,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-10-09 13:52:32,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-10-09 13:52:32,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-10-09 13:52:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-10-09 13:52:32,696 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-10-09 13:52:32,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:52:32,696 INFO L481 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-10-09 13:52:32,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:52:32,696 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-10-09 13:52:32,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:52:32,698 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:52:32,698 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:52:32,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-09 13:52:32,899 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]=== [2020-10-09 13:52:32,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:52:32,900 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-10-09 13:52:32,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:52:32,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318798580] [2020-10-09 13:52:32,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:52:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:52:32,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318798580] [2020-10-09 13:52:32,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299691203] [2020-10-09 13:52:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-09 13:52:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:33,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:52:33,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:52:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:52:33,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:52:33,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:52:33,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388007511] [2020-10-09 13:52:33,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:52:33,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:52:33,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:52:33,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:52:33,171 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-10-09 13:52:34,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:52:34,829 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-10-09 13:52:34,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:52:34,830 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:52:34,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:52:35,198 INFO L225 Difference]: With dead ends: 121131 [2020-10-09 13:52:35,199 INFO L226 Difference]: Without dead ends: 121101 [2020-10-09 13:52:35,199 INFO L673 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 [2020-10-09 13:52:36,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-10-09 13:52:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-10-09 13:52:37,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-10-09 13:52:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-10-09 13:52:37,910 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-10-09 13:52:37,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:52:37,910 INFO L481 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-10-09 13:52:37,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:52:37,910 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-10-09 13:52:37,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:52:37,912 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:52:37,912 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:52:38,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-09 13:52:38,113 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]=== [2020-10-09 13:52:38,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:52:38,114 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-10-09 13:52:38,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:52:38,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898961711] [2020-10-09 13:52:38,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:52:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:38,182 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:52:38,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898961711] [2020-10-09 13:52:38,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358238471] [2020-10-09 13:52:38,183 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 [2020-10-09 13:52:38,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:52:38,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:52:38,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:52:38,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:52:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:52:38,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:52:38,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:52:38,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191449007] [2020-10-09 13:52:38,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:52:38,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:52:38,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:52:38,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:52:38,386 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-10-09 13:52:40,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:52:40,402 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-10-09 13:52:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:52:40,402 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:52:40,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:52:40,760 INFO L225 Difference]: With dead ends: 120194 [2020-10-09 13:52:40,760 INFO L226 Difference]: Without dead ends: 120154 [2020-10-09 13:52:40,760 INFO L673 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 [2020-10-09 13:52:41,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-10-09 13:52:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-10-09 13:52:43,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-10-09 13:52:43,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-10-09 13:52:43,364 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-10-09 13:52:43,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:52:43,364 INFO L481 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-10-09 13:52:43,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:52:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-10-09 13:52:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:52:43,366 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:52:43,367 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:52:43,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:52:43,567 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]=== [2020-10-09 13:52:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:52:43,568 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-10-09 13:52:43,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:52:43,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471321189] [2020-10-09 13:52:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:52:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:52:43,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471321189] [2020-10-09 13:52:43,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627893713] [2020-10-09 13:52:43,633 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 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 [2020-10-09 13:52:43,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:52:43,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:52:43,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:52:43,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:52:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:52:43,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:52:43,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:52:43,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282709658] [2020-10-09 13:52:43,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:52:43,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:52:43,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:52:43,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:52:43,833 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-10-09 13:52:45,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:52:45,417 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-10-09 13:52:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:52:45,418 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:52:45,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:52:45,757 INFO L225 Difference]: With dead ends: 118559 [2020-10-09 13:52:45,757 INFO L226 Difference]: Without dead ends: 118526 [2020-10-09 13:52:45,757 INFO L673 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 [2020-10-09 13:52:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-10-09 13:52:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118526 to 34815. [2020-10-09 13:52:48,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-10-09 13:52:49,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-10-09 13:52:49,327 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-10-09 13:52:49,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:52:49,327 INFO L481 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-10-09 13:52:49,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:52:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-10-09 13:52:49,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:52:49,330 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:52:49,330 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:52:49,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-09 13:52:49,537 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]=== [2020-10-09 13:52:49,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:52:49,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1056609241, now seen corresponding path program 3 times [2020-10-09 13:52:49,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:52:49,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584754319] [2020-10-09 13:52:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:52:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:52:49,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584754319] [2020-10-09 13:52:49,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816866905] [2020-10-09 13:52:49,607 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 [2020-10-09 13:52:49,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 13:52:49,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:52:49,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:52:49,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:52:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:52:49,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:52:49,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:52:49,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686103903] [2020-10-09 13:52:49,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:52:49,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:52:49,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:52:49,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:52:49,797 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 16 states. [2020-10-09 13:52:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:52:51,527 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-10-09 13:52:51,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:52:51,528 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:52:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:52:51,927 INFO L225 Difference]: With dead ends: 118955 [2020-10-09 13:52:51,927 INFO L226 Difference]: Without dead ends: 118925 [2020-10-09 13:52:51,927 INFO L673 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 [2020-10-09 13:52:53,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-10-09 13:52:54,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-10-09 13:52:54,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-10-09 13:52:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-10-09 13:52:54,557 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-10-09 13:52:54,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:52:54,557 INFO L481 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-10-09 13:52:54,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:52:54,557 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-10-09 13:52:54,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:52:54,560 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:52:54,560 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:52:54,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-09 13:52:54,761 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]=== [2020-10-09 13:52:54,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:52:54,761 INFO L82 PathProgramCache]: Analyzing trace with hash -989383992, now seen corresponding path program 3 times [2020-10-09 13:52:54,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:52:54,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214743620] [2020-10-09 13:52:54,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:52:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:52:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:52:54,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214743620] [2020-10-09 13:52:54,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346649842] [2020-10-09 13:52:54,829 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 [2020-10-09 13:52:54,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 13:52:54,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:52:54,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:52:54,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:52:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:52:55,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:52:55,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:52:55,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734929478] [2020-10-09 13:52:55,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:52:55,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:52:55,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:52:55,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:52:55,028 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 16 states. [2020-10-09 13:52:56,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:52:56,833 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-10-09 13:52:56,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:52:56,834 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:52:56,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:52:57,183 INFO L225 Difference]: With dead ends: 117996 [2020-10-09 13:52:57,183 INFO L226 Difference]: Without dead ends: 117966 [2020-10-09 13:52:57,183 INFO L673 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 [2020-10-09 13:52:58,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-10-09 13:53:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117966 to 34024. [2020-10-09 13:53:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34024 states. [2020-10-09 13:53:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 181250 transitions. [2020-10-09 13:53:00,431 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 181250 transitions. Word has length 25 [2020-10-09 13:53:00,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:53:00,431 INFO L481 AbstractCegarLoop]: Abstraction has 34024 states and 181250 transitions. [2020-10-09 13:53:00,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:53:00,431 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 181250 transitions. [2020-10-09 13:53:00,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:53:00,434 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:53:00,434 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:53:00,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-09 13:53:00,635 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]=== [2020-10-09 13:53:00,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:53:00,635 INFO L82 PathProgramCache]: Analyzing trace with hash 507575079, now seen corresponding path program 4 times [2020-10-09 13:53:00,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:53:00,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242957959] [2020-10-09 13:53:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:53:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:53:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:53:00,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242957959] [2020-10-09 13:53:00,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600168122] [2020-10-09 13:53:00,701 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 [2020-10-09 13:53:00,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:53:00,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:53:00,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:53:00,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:53:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:53:00,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:53:00,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:53:00,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753697934] [2020-10-09 13:53:00,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:53:00,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:53:00,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:53:00,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:53:00,897 INFO L87 Difference]: Start difference. First operand 34024 states and 181250 transitions. Second operand 16 states. [2020-10-09 13:53:02,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:53:02,689 INFO L93 Difference]: Finished difference Result 119076 states and 543105 transitions. [2020-10-09 13:53:02,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:53:02,690 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:53:02,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:53:03,056 INFO L225 Difference]: With dead ends: 119076 [2020-10-09 13:53:03,056 INFO L226 Difference]: Without dead ends: 119036 [2020-10-09 13:53:03,056 INFO L673 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 [2020-10-09 13:53:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119036 states. [2020-10-09 13:53:05,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119036 to 33873. [2020-10-09 13:53:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33873 states. [2020-10-09 13:53:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33873 states to 33873 states and 180354 transitions. [2020-10-09 13:53:05,766 INFO L78 Accepts]: Start accepts. Automaton has 33873 states and 180354 transitions. Word has length 25 [2020-10-09 13:53:05,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:53:05,766 INFO L481 AbstractCegarLoop]: Abstraction has 33873 states and 180354 transitions. [2020-10-09 13:53:05,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:53:05,766 INFO L276 IsEmpty]: Start isEmpty. Operand 33873 states and 180354 transitions. [2020-10-09 13:53:05,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:53:05,768 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:53:05,768 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:53:05,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-09 13:53:05,969 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]=== [2020-10-09 13:53:05,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:53:05,969 INFO L82 PathProgramCache]: Analyzing trace with hash 507547272, now seen corresponding path program 4 times [2020-10-09 13:53:05,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:53:05,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138010279] [2020-10-09 13:53:05,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:53:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:53:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:53:06,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138010279] [2020-10-09 13:53:06,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488829798] [2020-10-09 13:53:06,044 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 [2020-10-09 13:53:06,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:53:06,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:53:06,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:53:06,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:53:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:53:06,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:53:06,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:53:06,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88082004] [2020-10-09 13:53:06,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:53:06,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:53:06,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:53:06,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:53:06,232 INFO L87 Difference]: Start difference. First operand 33873 states and 180354 transitions. Second operand 16 states. [2020-10-09 13:53:07,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:53:07,843 INFO L93 Difference]: Finished difference Result 118020 states and 538147 transitions. [2020-10-09 13:53:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:53:07,843 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 13:53:07,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:53:08,180 INFO L225 Difference]: With dead ends: 118020 [2020-10-09 13:53:08,180 INFO L226 Difference]: Without dead ends: 117980 [2020-10-09 13:53:08,181 INFO L673 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 [2020-10-09 13:53:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117980 states. [2020-10-09 13:53:11,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117980 to 33387. [2020-10-09 13:53:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33387 states. [2020-10-09 13:53:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33387 states to 33387 states and 177693 transitions. [2020-10-09 13:53:11,304 INFO L78 Accepts]: Start accepts. Automaton has 33387 states and 177693 transitions. Word has length 25 [2020-10-09 13:53:11,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:53:11,305 INFO L481 AbstractCegarLoop]: Abstraction has 33387 states and 177693 transitions. [2020-10-09 13:53:11,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:53:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 33387 states and 177693 transitions. [2020-10-09 13:53:11,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:53:11,307 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:53:11,307 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:53:11,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:53:11,508 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]=== [2020-10-09 13:53:11,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:53:11,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1147615783, now seen corresponding path program 5 times [2020-10-09 13:53:11,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:53:11,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502027358] [2020-10-09 13:53:11,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:53:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:53:11,571 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:53:11,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502027358] [2020-10-09 13:53:11,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:53:11,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:53:11,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7012502] [2020-10-09 13:53:11,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:53:11,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:53:11,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:53:11,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:53:11,572 INFO L87 Difference]: Start difference. First operand 33387 states and 177693 transitions. Second operand 9 states. [2020-10-09 13:53:13,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:53:13,200 INFO L93 Difference]: Finished difference Result 118363 states and 539792 transitions. [2020-10-09 13:53:13,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:53:13,200 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-09 13:53:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:53:13,550 INFO L225 Difference]: With dead ends: 118363 [2020-10-09 13:53:13,551 INFO L226 Difference]: Without dead ends: 118333 [2020-10-09 13:53:13,551 INFO L673 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 [2020-10-09 13:53:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118333 states. [2020-10-09 13:53:15,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118333 to 32908. [2020-10-09 13:53:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32908 states. [2020-10-09 13:53:16,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 175152 transitions. [2020-10-09 13:53:16,068 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 175152 transitions. Word has length 25 [2020-10-09 13:53:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:53:16,069 INFO L481 AbstractCegarLoop]: Abstraction has 32908 states and 175152 transitions. [2020-10-09 13:53:16,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:53:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 175152 transitions. [2020-10-09 13:53:16,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:53:16,071 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:53:16,072 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:53:16,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-10-09 13:53:16,072 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]=== [2020-10-09 13:53:16,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:53:16,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1147599384, now seen corresponding path program 5 times [2020-10-09 13:53:16,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:53:16,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354192666] [2020-10-09 13:53:16,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:53:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:53:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:53:16,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354192666] [2020-10-09 13:53:16,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:53:16,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:53:16,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500742223] [2020-10-09 13:53:16,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:53:16,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:53:16,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:53:16,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:53:16,147 INFO L87 Difference]: Start difference. First operand 32908 states and 175152 transitions. Second operand 9 states. [2020-10-09 13:53:17,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:53:17,701 INFO L93 Difference]: Finished difference Result 117027 states and 533313 transitions. [2020-10-09 13:53:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:53:17,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-09 13:53:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:53:18,039 INFO L225 Difference]: With dead ends: 117027 [2020-10-09 13:53:18,039 INFO L226 Difference]: Without dead ends: 116997 [2020-10-09 13:53:18,039 INFO L673 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 [2020-10-09 13:53:19,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116997 states. [2020-10-09 13:53:20,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116997 to 32394. [2020-10-09 13:53:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32394 states. [2020-10-09 13:53:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32394 states to 32394 states and 172458 transitions. [2020-10-09 13:53:21,101 INFO L78 Accepts]: Start accepts. Automaton has 32394 states and 172458 transitions. Word has length 25 [2020-10-09 13:53:21,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:53:21,102 INFO L481 AbstractCegarLoop]: Abstraction has 32394 states and 172458 transitions. [2020-10-09 13:53:21,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:53:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 32394 states and 172458 transitions. [2020-10-09 13:53:21,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:53:21,104 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:53:21,104 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:53:21,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-10-09 13:53:21,105 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]=== [2020-10-09 13:53:21,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:53:21,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1136664103, now seen corresponding path program 6 times [2020-10-09 13:53:21,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:53:21,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939069844] [2020-10-09 13:53:21,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:53:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:53:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:53:21,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939069844] [2020-10-09 13:53:21,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:53:21,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:53:21,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095759638] [2020-10-09 13:53:21,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:53:21,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:53:21,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:53:21,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:53:21,174 INFO L87 Difference]: Start difference. First operand 32394 states and 172458 transitions. Second operand 9 states. [2020-10-09 13:53:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:53:22,653 INFO L93 Difference]: Finished difference Result 116213 states and 529114 transitions. [2020-10-09 13:53:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:53:22,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-09 13:53:22,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:53:23,005 INFO L225 Difference]: With dead ends: 116213 [2020-10-09 13:53:23,005 INFO L226 Difference]: Without dead ends: 116173 [2020-10-09 13:53:23,005 INFO L673 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 [2020-10-09 13:53:24,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116173 states. [2020-10-09 13:53:25,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116173 to 31530. [2020-10-09 13:53:25,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31530 states. [2020-10-09 13:53:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31530 states to 31530 states and 168028 transitions. [2020-10-09 13:53:25,525 INFO L78 Accepts]: Start accepts. Automaton has 31530 states and 168028 transitions. Word has length 25 [2020-10-09 13:53:25,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:53:25,525 INFO L481 AbstractCegarLoop]: Abstraction has 31530 states and 168028 transitions. [2020-10-09 13:53:25,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:53:25,525 INFO L276 IsEmpty]: Start isEmpty. Operand 31530 states and 168028 transitions. [2020-10-09 13:53:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:53:25,528 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:53:25,528 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:53:25,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-10-09 13:53:25,528 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]=== [2020-10-09 13:53:25,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:53:25,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1136636296, now seen corresponding path program 5 times [2020-10-09 13:53:25,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:53:25,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530529504] [2020-10-09 13:53:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:53:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:53:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:53:25,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530529504] [2020-10-09 13:53:25,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:53:25,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:53:25,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001360361] [2020-10-09 13:53:25,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:53:25,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:53:25,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:53:25,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:53:25,608 INFO L87 Difference]: Start difference. First operand 31530 states and 168028 transitions. Second operand 9 states. [2020-10-09 13:53:27,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:53:27,226 INFO L93 Difference]: Finished difference Result 115048 states and 523573 transitions. [2020-10-09 13:53:27,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:53:27,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-09 13:53:27,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:53:27,570 INFO L225 Difference]: With dead ends: 115048 [2020-10-09 13:53:27,570 INFO L226 Difference]: Without dead ends: 115018 [2020-10-09 13:53:27,570 INFO L673 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 [2020-10-09 13:53:28,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115018 states. [2020-10-09 13:53:30,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115018 to 31199. [2020-10-09 13:53:30,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31199 states. [2020-10-09 13:53:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31199 states to 31199 states and 166334 transitions. [2020-10-09 13:53:30,630 INFO L78 Accepts]: Start accepts. Automaton has 31199 states and 166334 transitions. Word has length 25 [2020-10-09 13:53:30,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:53:30,630 INFO L481 AbstractCegarLoop]: Abstraction has 31199 states and 166334 transitions. [2020-10-09 13:53:30,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:53:30,631 INFO L276 IsEmpty]: Start isEmpty. Operand 31199 states and 166334 transitions. [2020-10-09 13:53:30,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:53:30,633 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:53:30,633 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:53:30,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-10-09 13:53:30,633 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]=== [2020-10-09 13:53:30,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:53:30,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1120904664, now seen corresponding path program 6 times [2020-10-09 13:53:30,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:53:30,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175082096] [2020-10-09 13:53:30,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:53:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:53:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:53:30,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175082096] [2020-10-09 13:53:30,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:53:30,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:53:30,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17318996] [2020-10-09 13:53:30,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:53:30,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:53:30,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:53:30,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:53:30,707 INFO L87 Difference]: Start difference. First operand 31199 states and 166334 transitions. Second operand 9 states. [2020-10-09 13:53:32,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:53:32,229 INFO L93 Difference]: Finished difference Result 114413 states and 520399 transitions. [2020-10-09 13:53:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:53:32,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-09 13:53:32,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:53:32,565 INFO L225 Difference]: With dead ends: 114413 [2020-10-09 13:53:32,566 INFO L226 Difference]: Without dead ends: 114373 [2020-10-09 13:53:32,566 INFO L673 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 [2020-10-09 13:53:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114373 states. [2020-10-09 13:53:34,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114373 to 30592. [2020-10-09 13:53:34,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30592 states. [2020-10-09 13:53:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30592 states to 30592 states and 163260 transitions. [2020-10-09 13:53:35,001 INFO L78 Accepts]: Start accepts. Automaton has 30592 states and 163260 transitions. Word has length 25 [2020-10-09 13:53:35,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:53:35,001 INFO L481 AbstractCegarLoop]: Abstraction has 30592 states and 163260 transitions. [2020-10-09 13:53:35,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:53:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 30592 states and 163260 transitions. [2020-10-09 13:53:35,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:53:35,003 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:53:35,004 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:53:35,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-10-09 13:53:35,004 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]=== [2020-10-09 13:53:35,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:53:35,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1120893256, now seen corresponding path program 6 times [2020-10-09 13:53:35,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:53:35,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396988054] [2020-10-09 13:53:35,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:53:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:53:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:53:35,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396988054] [2020-10-09 13:53:35,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:53:35,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 13:53:35,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462288970] [2020-10-09 13:53:35,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 13:53:35,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:53:35,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 13:53:35,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 13:53:35,074 INFO L87 Difference]: Start difference. First operand 30592 states and 163260 transitions. Second operand 9 states. [2020-10-09 13:53:36,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:53:36,579 INFO L93 Difference]: Finished difference Result 113466 states and 515911 transitions. [2020-10-09 13:53:36,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:53:36,579 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-09 13:53:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:53:36,917 INFO L225 Difference]: With dead ends: 113466 [2020-10-09 13:53:36,917 INFO L226 Difference]: Without dead ends: 113426 [2020-10-09 13:53:36,918 INFO L673 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 [2020-10-09 13:53:38,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113426 states. [2020-10-09 13:53:39,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113426 to 29802. [2020-10-09 13:53:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-10-09 13:53:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 159321 transitions. [2020-10-09 13:53:39,967 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 159321 transitions. Word has length 25 [2020-10-09 13:53:39,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:53:39,967 INFO L481 AbstractCegarLoop]: Abstraction has 29802 states and 159321 transitions. [2020-10-09 13:53:39,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 13:53:39,967 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 159321 transitions. [2020-10-09 13:53:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 13:53:39,969 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:53:39,969 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:53:39,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-10-09 13:53:39,969 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]=== [2020-10-09 13:53:39,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:53:39,970 INFO L82 PathProgramCache]: Analyzing trace with hash 123792641, now seen corresponding path program 1 times [2020-10-09 13:53:39,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:53:39,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006529256] [2020-10-09 13:53:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:53:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:53:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 13:53:40,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006529256] [2020-10-09 13:53:40,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:53:40,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:53:40,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927648764] [2020-10-09 13:53:40,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:53:40,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:53:40,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:53:40,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:53:40,004 INFO L87 Difference]: Start difference. First operand 29802 states and 159321 transitions. Second operand 5 states. [2020-10-09 13:53:40,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:53:40,434 INFO L93 Difference]: Finished difference Result 53165 states and 272731 transitions. [2020-10-09 13:53:40,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:53:40,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-09 13:53:40,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:53:40,603 INFO L225 Difference]: With dead ends: 53165 [2020-10-09 13:53:40,604 INFO L226 Difference]: Without dead ends: 53102 [2020-10-09 13:53:40,604 INFO L673 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 [2020-10-09 13:53:41,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53102 states. [2020-10-09 13:53:42,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53102 to 37675. [2020-10-09 13:53:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-10-09 13:53:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-10-09 13:53:42,200 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-10-09 13:53:42,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:53:42,200 INFO L481 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-10-09 13:53:42,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:53:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-10-09 13:53:42,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:53:42,203 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:53:42,203 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:53:42,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-10-09 13:53:42,204 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]=== [2020-10-09 13:53:42,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:53:42,204 INFO L82 PathProgramCache]: Analyzing trace with hash -480284107, now seen corresponding path program 1 times [2020-10-09 13:53:42,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:53:42,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134823562] [2020-10-09 13:53:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:53:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:53:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:53:42,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134823562] [2020-10-09 13:53:42,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889258807] [2020-10-09 13:53:42,302 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 [2020-10-09 13:53:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:53:42,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:53:42,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:53:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:53:42,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:53:42,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:53:42,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077302719] [2020-10-09 13:53:42,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:53:42,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:53:42,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:53:42,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:53:42,562 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 20 states. [2020-10-09 13:53:46,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:53:46,262 INFO L93 Difference]: Finished difference Result 186148 states and 815009 transitions. [2020-10-09 13:53:46,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:53:46,263 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:53:46,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:53:46,780 INFO L225 Difference]: With dead ends: 186148 [2020-10-09 13:53:46,780 INFO L226 Difference]: Without dead ends: 186130 [2020-10-09 13:53:46,781 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1848 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-09 13:53:48,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186130 states. [2020-10-09 13:53:51,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186130 to 37780. [2020-10-09 13:53:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37780 states. [2020-10-09 13:53:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37780 states to 37780 states and 201508 transitions. [2020-10-09 13:53:51,351 INFO L78 Accepts]: Start accepts. Automaton has 37780 states and 201508 transitions. Word has length 27 [2020-10-09 13:53:51,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:53:51,352 INFO L481 AbstractCegarLoop]: Abstraction has 37780 states and 201508 transitions. [2020-10-09 13:53:51,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:53:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 37780 states and 201508 transitions. [2020-10-09 13:53:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:53:51,356 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:53:51,356 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:53:51,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-10-09 13:53:51,563 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]=== [2020-10-09 13:53:51,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:53:51,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1807002315, now seen corresponding path program 2 times [2020-10-09 13:53:51,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:53:51,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828618443] [2020-10-09 13:53:51,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:53:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:53:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:53:51,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828618443] [2020-10-09 13:53:51,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170438965] [2020-10-09 13:53:51,658 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 [2020-10-09 13:53:51,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:53:51,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:53:51,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:53:51,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:53:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:53:51,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:53:51,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:53:51,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792689966] [2020-10-09 13:53:51,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:53:51,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:53:51,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:53:51,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:53:51,932 INFO L87 Difference]: Start difference. First operand 37780 states and 201508 transitions. Second operand 20 states. [2020-10-09 13:53:55,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:53:55,694 INFO L93 Difference]: Finished difference Result 185731 states and 813247 transitions. [2020-10-09 13:53:55,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:53:55,694 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:53:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:53:56,220 INFO L225 Difference]: With dead ends: 185731 [2020-10-09 13:53:56,220 INFO L226 Difference]: Without dead ends: 185707 [2020-10-09 13:53:56,221 INFO L673 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 [2020-10-09 13:53:57,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185707 states. [2020-10-09 13:53:59,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185707 to 37506. [2020-10-09 13:53:59,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37506 states. [2020-10-09 13:54:00,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 200034 transitions. [2020-10-09 13:54:00,048 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 200034 transitions. Word has length 27 [2020-10-09 13:54:00,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:54:00,048 INFO L481 AbstractCegarLoop]: Abstraction has 37506 states and 200034 transitions. [2020-10-09 13:54:00,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:54:00,048 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 200034 transitions. [2020-10-09 13:54:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:54:00,052 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:54:00,052 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:54:00,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-09 13:54:00,252 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]=== [2020-10-09 13:54:00,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:54:00,253 INFO L82 PathProgramCache]: Analyzing trace with hash 2078895349, now seen corresponding path program 3 times [2020-10-09 13:54:00,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:54:00,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452999953] [2020-10-09 13:54:00,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:54:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:54:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:54:00,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452999953] [2020-10-09 13:54:00,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730116709] [2020-10-09 13:54:00,347 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 [2020-10-09 13:54:00,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 13:54:00,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:54:00,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:54:00,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:54:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:54:01,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:54:01,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:54:01,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248253817] [2020-10-09 13:54:01,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:54:01,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:54:01,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:54:01,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:54:01,154 INFO L87 Difference]: Start difference. First operand 37506 states and 200034 transitions. Second operand 20 states. [2020-10-09 13:54:04,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:54:04,813 INFO L93 Difference]: Finished difference Result 185071 states and 810108 transitions. [2020-10-09 13:54:04,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:54:04,814 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:54:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:54:05,328 INFO L225 Difference]: With dead ends: 185071 [2020-10-09 13:54:05,329 INFO L226 Difference]: Without dead ends: 185053 [2020-10-09 13:54:05,329 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1842 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-09 13:54:06,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185053 states. [2020-10-09 13:54:08,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185053 to 37607. [2020-10-09 13:54:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37607 states. [2020-10-09 13:54:09,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37607 states to 37607 states and 200519 transitions. [2020-10-09 13:54:09,044 INFO L78 Accepts]: Start accepts. Automaton has 37607 states and 200519 transitions. Word has length 27 [2020-10-09 13:54:09,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:54:09,045 INFO L481 AbstractCegarLoop]: Abstraction has 37607 states and 200519 transitions. [2020-10-09 13:54:09,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:54:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 37607 states and 200519 transitions. [2020-10-09 13:54:09,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:54:09,048 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:54:09,048 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:54:09,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:54:09,249 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]=== [2020-10-09 13:54:09,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:54:09,249 INFO L82 PathProgramCache]: Analyzing trace with hash -651887627, now seen corresponding path program 4 times [2020-10-09 13:54:09,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:54:09,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057185825] [2020-10-09 13:54:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:54:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:54:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:54:09,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057185825] [2020-10-09 13:54:09,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267549374] [2020-10-09 13:54:09,347 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 [2020-10-09 13:54:09,435 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:54:09,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:54:09,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:54:09,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:54:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 13:54:09,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:54:09,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:54:09,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099424670] [2020-10-09 13:54:09,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:54:09,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:54:09,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:54:09,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:54:09,610 INFO L87 Difference]: Start difference. First operand 37607 states and 200519 transitions. Second operand 20 states. [2020-10-09 13:54:13,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:54:13,858 INFO L93 Difference]: Finished difference Result 184772 states and 808751 transitions. [2020-10-09 13:54:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:54:13,858 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:54:13,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:54:14,366 INFO L225 Difference]: With dead ends: 184772 [2020-10-09 13:54:14,366 INFO L226 Difference]: Without dead ends: 184748 [2020-10-09 13:54:14,367 INFO L673 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 [2020-10-09 13:54:15,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184748 states. [2020-10-09 13:54:17,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184748 to 37341. [2020-10-09 13:54:17,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37341 states. [2020-10-09 13:54:17,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37341 states to 37341 states and 199065 transitions. [2020-10-09 13:54:17,987 INFO L78 Accepts]: Start accepts. Automaton has 37341 states and 199065 transitions. Word has length 27 [2020-10-09 13:54:17,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:54:17,988 INFO L481 AbstractCegarLoop]: Abstraction has 37341 states and 199065 transitions. [2020-10-09 13:54:17,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:54:17,988 INFO L276 IsEmpty]: Start isEmpty. Operand 37341 states and 199065 transitions. [2020-10-09 13:54:17,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:54:17,991 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:54:17,991 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:54:18,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:54:18,192 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]=== [2020-10-09 13:54:18,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:54:18,192 INFO L82 PathProgramCache]: Analyzing trace with hash -11846923, now seen corresponding path program 5 times [2020-10-09 13:54:18,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:54:18,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494959413] [2020-10-09 13:54:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:54:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:54:18,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:54:18,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494959413] [2020-10-09 13:54:18,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961667822] [2020-10-09 13:54:18,291 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 [2020-10-09 13:54:18,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-09 13:54:18,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:54:18,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:54:18,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:54:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:54:18,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:54:18,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:54:18,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714563377] [2020-10-09 13:54:18,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:54:18,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:54:18,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:54:18,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:54:18,565 INFO L87 Difference]: Start difference. First operand 37341 states and 199065 transitions. Second operand 20 states. [2020-10-09 13:54:22,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:54:22,280 INFO L93 Difference]: Finished difference Result 184120 states and 805632 transitions. [2020-10-09 13:54:22,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:54:22,281 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:54:22,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:54:22,815 INFO L225 Difference]: With dead ends: 184120 [2020-10-09 13:54:22,815 INFO L226 Difference]: Without dead ends: 184102 [2020-10-09 13:54:22,816 INFO L673 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 [2020-10-09 13:54:25,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184102 states. [2020-10-09 13:54:26,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184102 to 37438. [2020-10-09 13:54:26,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37438 states. [2020-10-09 13:54:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37438 states to 37438 states and 199538 transitions. [2020-10-09 13:54:27,122 INFO L78 Accepts]: Start accepts. Automaton has 37438 states and 199538 transitions. Word has length 27 [2020-10-09 13:54:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:54:27,122 INFO L481 AbstractCegarLoop]: Abstraction has 37438 states and 199538 transitions. [2020-10-09 13:54:27,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:54:27,123 INFO L276 IsEmpty]: Start isEmpty. Operand 37438 states and 199538 transitions. [2020-10-09 13:54:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:54:27,126 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:54:27,126 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:54:27,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:54:27,327 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]=== [2020-10-09 13:54:27,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:54:27,327 INFO L82 PathProgramCache]: Analyzing trace with hash -22798603, now seen corresponding path program 6 times [2020-10-09 13:54:27,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:54:27,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412797591] [2020-10-09 13:54:27,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:54:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:54:27,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:54:27,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412797591] [2020-10-09 13:54:27,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193067051] [2020-10-09 13:54:27,426 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 [2020-10-09 13:54:27,519 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-09 13:54:27,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:54:27,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:54:27,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:54:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:54:27,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:54:27,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:54:27,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644424726] [2020-10-09 13:54:27,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:54:27,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:54:27,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:54:27,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:54:27,698 INFO L87 Difference]: Start difference. First operand 37438 states and 199538 transitions. Second operand 20 states. [2020-10-09 13:54:31,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:54:31,421 INFO L93 Difference]: Finished difference Result 183711 states and 803890 transitions. [2020-10-09 13:54:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:54:31,422 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:54:31,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:54:31,934 INFO L225 Difference]: With dead ends: 183711 [2020-10-09 13:54:31,934 INFO L226 Difference]: Without dead ends: 183683 [2020-10-09 13:54:31,935 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-09 13:54:33,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183683 states. [2020-10-09 13:54:36,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183683 to 37176. [2020-10-09 13:54:36,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37176 states. [2020-10-09 13:54:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37176 states to 37176 states and 198103 transitions. [2020-10-09 13:54:36,386 INFO L78 Accepts]: Start accepts. Automaton has 37176 states and 198103 transitions. Word has length 27 [2020-10-09 13:54:36,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:54:36,386 INFO L481 AbstractCegarLoop]: Abstraction has 37176 states and 198103 transitions. [2020-10-09 13:54:36,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:54:36,386 INFO L276 IsEmpty]: Start isEmpty. Operand 37176 states and 198103 transitions. [2020-10-09 13:54:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:54:36,389 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:54:36,389 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:54:36,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-09 13:54:36,590 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]=== [2020-10-09 13:54:36,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:54:36,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1035670065, now seen corresponding path program 1 times [2020-10-09 13:54:36,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:54:36,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032986479] [2020-10-09 13:54:36,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:54:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:54:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-09 13:54:36,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032986479] [2020-10-09 13:54:36,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048019835] [2020-10-09 13:54:36,642 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 [2020-10-09 13:54:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:54:36,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:54:36,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:54:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-09 13:54:36,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:54:36,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:54:36,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833385587] [2020-10-09 13:54:36,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:54:36,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:54:36,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:54:36,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:54:36,799 INFO L87 Difference]: Start difference. First operand 37176 states and 198103 transitions. Second operand 12 states. [2020-10-09 13:54:37,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:54:37,595 INFO L93 Difference]: Finished difference Result 82213 states and 399726 transitions. [2020-10-09 13:54:37,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:54:37,595 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-09 13:54:37,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:54:37,845 INFO L225 Difference]: With dead ends: 82213 [2020-10-09 13:54:37,846 INFO L226 Difference]: Without dead ends: 82165 [2020-10-09 13:54:37,846 INFO L673 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 [2020-10-09 13:54:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-10-09 13:54:39,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 38439. [2020-10-09 13:54:39,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-10-09 13:54:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-10-09 13:54:39,891 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-10-09 13:54:39,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:54:39,891 INFO L481 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-10-09 13:54:39,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:54:39,891 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-10-09 13:54:39,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:54:39,895 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:54:39,895 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:54:40,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-10-09 13:54:40,096 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]=== [2020-10-09 13:54:40,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:54:40,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1753210507, now seen corresponding path program 7 times [2020-10-09 13:54:40,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:54:40,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640768645] [2020-10-09 13:54:40,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:54:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:54:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:54:40,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640768645] [2020-10-09 13:54:40,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016797678] [2020-10-09 13:54:40,195 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 [2020-10-09 13:54:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:54:40,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:54:40,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:54:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:54:40,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:54:40,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:54:40,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109433027] [2020-10-09 13:54:40,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:54:40,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:54:40,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:54:40,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:54:40,459 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 20 states. [2020-10-09 13:54:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:54:43,965 INFO L93 Difference]: Finished difference Result 183266 states and 800955 transitions. [2020-10-09 13:54:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:54:43,966 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:54:43,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:54:44,481 INFO L225 Difference]: With dead ends: 183266 [2020-10-09 13:54:44,481 INFO L226 Difference]: Without dead ends: 183248 [2020-10-09 13:54:44,482 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-09 13:54:47,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2020-10-09 13:54:48,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 38274. [2020-10-09 13:54:48,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38274 states. [2020-10-09 13:54:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38274 states to 38274 states and 203647 transitions. [2020-10-09 13:54:48,962 INFO L78 Accepts]: Start accepts. Automaton has 38274 states and 203647 transitions. Word has length 27 [2020-10-09 13:54:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:54:48,962 INFO L481 AbstractCegarLoop]: Abstraction has 38274 states and 203647 transitions. [2020-10-09 13:54:48,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:54:48,962 INFO L276 IsEmpty]: Start isEmpty. Operand 38274 states and 203647 transitions. [2020-10-09 13:54:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:54:48,966 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:54:48,966 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:54:49,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-09 13:54:49,167 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]=== [2020-10-09 13:54:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:54:49,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1215038581, now seen corresponding path program 8 times [2020-10-09 13:54:49,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:54:49,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42669847] [2020-10-09 13:54:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:54:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:54:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:54:49,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42669847] [2020-10-09 13:54:49,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290782877] [2020-10-09 13:54:49,266 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 [2020-10-09 13:54:49,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:54:49,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:54:49,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:54:49,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:54:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:54:49,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:54:49,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:54:49,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651592795] [2020-10-09 13:54:49,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:54:49,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:54:49,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:54:49,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:54:49,529 INFO L87 Difference]: Start difference. First operand 38274 states and 203647 transitions. Second operand 20 states. [2020-10-09 13:54:53,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:54:53,786 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-10-09 13:54:53,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:54:53,787 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:54:53,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:54:54,303 INFO L225 Difference]: With dead ends: 182849 [2020-10-09 13:54:54,303 INFO L226 Difference]: Without dead ends: 182825 [2020-10-09 13:54:54,304 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-09 13:54:55,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-10-09 13:54:58,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37880. [2020-10-09 13:54:58,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37880 states. [2020-10-09 13:54:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37880 states to 37880 states and 201614 transitions. [2020-10-09 13:54:58,927 INFO L78 Accepts]: Start accepts. Automaton has 37880 states and 201614 transitions. Word has length 27 [2020-10-09 13:54:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:54:58,927 INFO L481 AbstractCegarLoop]: Abstraction has 37880 states and 201614 transitions. [2020-10-09 13:54:58,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:54:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand 37880 states and 201614 transitions. [2020-10-09 13:54:58,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:54:58,931 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:54:58,931 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:54:59,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-09 13:54:59,132 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]=== [2020-10-09 13:54:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:54:59,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1641326347, now seen corresponding path program 9 times [2020-10-09 13:54:59,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:54:59,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491104711] [2020-10-09 13:54:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:54:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:54:59,231 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:54:59,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491104711] [2020-10-09 13:54:59,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445839891] [2020-10-09 13:54:59,232 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 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 [2020-10-09 13:54:59,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 13:54:59,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:54:59,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:54:59,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:54:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:54:59,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:54:59,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:54:59,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892987719] [2020-10-09 13:54:59,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:54:59,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:54:59,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:54:59,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:54:59,503 INFO L87 Difference]: Start difference. First operand 37880 states and 201614 transitions. Second operand 20 states. [2020-10-09 13:55:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:55:03,472 INFO L93 Difference]: Finished difference Result 183813 states and 803277 transitions. [2020-10-09 13:55:03,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:55:03,473 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:55:03,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:55:03,994 INFO L225 Difference]: With dead ends: 183813 [2020-10-09 13:55:03,994 INFO L226 Difference]: Without dead ends: 183795 [2020-10-09 13:55:03,995 INFO L673 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 [2020-10-09 13:55:05,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183795 states. [2020-10-09 13:55:08,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183795 to 37981. [2020-10-09 13:55:08,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-10-09 13:55:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202099 transitions. [2020-10-09 13:55:08,883 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202099 transitions. Word has length 27 [2020-10-09 13:55:08,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:55:08,883 INFO L481 AbstractCegarLoop]: Abstraction has 37981 states and 202099 transitions. [2020-10-09 13:55:08,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:55:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202099 transitions. [2020-10-09 13:55:08,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:55:08,887 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:55:08,888 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:55:09,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-10-09 13:55:09,095 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]=== [2020-10-09 13:55:09,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:55:09,096 INFO L82 PathProgramCache]: Analyzing trace with hash -144395083, now seen corresponding path program 10 times [2020-10-09 13:55:09,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:55:09,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62074345] [2020-10-09 13:55:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:55:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:55:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:55:09,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62074345] [2020-10-09 13:55:09,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454545744] [2020-10-09 13:55:09,195 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 [2020-10-09 13:55:09,284 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:55:09,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:55:09,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:55:09,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:55:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 13:55:09,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:55:09,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:55:09,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227706841] [2020-10-09 13:55:09,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:55:09,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:55:09,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:55:09,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:55:09,468 INFO L87 Difference]: Start difference. First operand 37981 states and 202099 transitions. Second operand 20 states. [2020-10-09 13:55:13,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:55:13,754 INFO L93 Difference]: Finished difference Result 184566 states and 806586 transitions. [2020-10-09 13:55:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:55:13,755 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:55:13,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:55:14,282 INFO L225 Difference]: With dead ends: 184566 [2020-10-09 13:55:14,283 INFO L226 Difference]: Without dead ends: 184542 [2020-10-09 13:55:14,283 INFO L673 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 [2020-10-09 13:55:15,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184542 states. [2020-10-09 13:55:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184542 to 37715. [2020-10-09 13:55:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2020-10-09 13:55:18,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 200645 transitions. [2020-10-09 13:55:18,150 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 200645 transitions. Word has length 27 [2020-10-09 13:55:18,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:55:18,150 INFO L481 AbstractCegarLoop]: Abstraction has 37715 states and 200645 transitions. [2020-10-09 13:55:18,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:55:18,151 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 200645 transitions. [2020-10-09 13:55:18,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:55:18,155 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:55:18,156 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:55:18,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:55:18,371 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]=== [2020-10-09 13:55:18,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:55:18,371 INFO L82 PathProgramCache]: Analyzing trace with hash 484693941, now seen corresponding path program 11 times [2020-10-09 13:55:18,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:55:18,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862897257] [2020-10-09 13:55:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:55:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:55:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:55:18,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862897257] [2020-10-09 13:55:18,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717993111] [2020-10-09 13:55:18,478 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 [2020-10-09 13:55:18,570 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-09 13:55:18,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:55:18,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:55:18,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:55:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:55:18,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:55:18,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:55:18,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588058112] [2020-10-09 13:55:18,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:55:18,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:55:18,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:55:18,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:55:18,754 INFO L87 Difference]: Start difference. First operand 37715 states and 200645 transitions. Second operand 20 states. [2020-10-09 13:55:22,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:55:22,948 INFO L93 Difference]: Finished difference Result 183914 states and 803467 transitions. [2020-10-09 13:55:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:55:22,949 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:55:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:55:23,473 INFO L225 Difference]: With dead ends: 183914 [2020-10-09 13:55:23,473 INFO L226 Difference]: Without dead ends: 183896 [2020-10-09 13:55:23,474 INFO L673 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 [2020-10-09 13:55:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183896 states. [2020-10-09 13:55:27,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183896 to 37812. [2020-10-09 13:55:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37812 states. [2020-10-09 13:55:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37812 states to 37812 states and 201118 transitions. [2020-10-09 13:55:27,326 INFO L78 Accepts]: Start accepts. Automaton has 37812 states and 201118 transitions. Word has length 27 [2020-10-09 13:55:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:55:27,326 INFO L481 AbstractCegarLoop]: Abstraction has 37812 states and 201118 transitions. [2020-10-09 13:55:27,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:55:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 37812 states and 201118 transitions. [2020-10-09 13:55:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:55:27,330 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:55:27,330 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:55:27,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-09 13:55:27,531 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]=== [2020-10-09 13:55:27,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:55:27,532 INFO L82 PathProgramCache]: Analyzing trace with hash 468950901, now seen corresponding path program 12 times [2020-10-09 13:55:27,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:55:27,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970863205] [2020-10-09 13:55:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:55:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:55:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:55:27,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970863205] [2020-10-09 13:55:27,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841403081] [2020-10-09 13:55:27,634 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 [2020-10-09 13:55:27,718 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 13:55:27,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:55:27,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:55:27,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:55:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:55:27,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:55:27,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:55:27,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094515487] [2020-10-09 13:55:27,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:55:27,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:55:27,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:55:27,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:55:27,893 INFO L87 Difference]: Start difference. First operand 37812 states and 201118 transitions. Second operand 20 states. [2020-10-09 13:55:32,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:55:32,940 INFO L93 Difference]: Finished difference Result 182421 states and 796955 transitions. [2020-10-09 13:55:32,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:55:32,941 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:55:32,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:55:33,449 INFO L225 Difference]: With dead ends: 182421 [2020-10-09 13:55:33,450 INFO L226 Difference]: Without dead ends: 182393 [2020-10-09 13:55:33,450 INFO L673 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 [2020-10-09 13:55:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182393 states. [2020-10-09 13:55:37,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182393 to 37550. [2020-10-09 13:55:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37550 states. [2020-10-09 13:55:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37550 states to 37550 states and 199683 transitions. [2020-10-09 13:55:37,152 INFO L78 Accepts]: Start accepts. Automaton has 37550 states and 199683 transitions. Word has length 27 [2020-10-09 13:55:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:55:37,152 INFO L481 AbstractCegarLoop]: Abstraction has 37550 states and 199683 transitions. [2020-10-09 13:55:37,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:55:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 37550 states and 199683 transitions. [2020-10-09 13:55:37,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:55:37,156 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:55:37,156 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:55:37,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-10-09 13:55:37,357 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]=== [2020-10-09 13:55:37,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:55:37,357 INFO L82 PathProgramCache]: Analyzing trace with hash -528149714, now seen corresponding path program 1 times [2020-10-09 13:55:37,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:55:37,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206113179] [2020-10-09 13:55:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:55:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:55:37,406 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-09 13:55:37,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206113179] [2020-10-09 13:55:37,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961600222] [2020-10-09 13:55:37,406 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 [2020-10-09 13:55:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:55:37,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:55:37,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:55:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-09 13:55:37,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:55:37,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:55:37,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514084505] [2020-10-09 13:55:37,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:55:37,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:55:37,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:55:37,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:55:37,570 INFO L87 Difference]: Start difference. First operand 37550 states and 199683 transitions. Second operand 12 states. [2020-10-09 13:55:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:55:38,484 INFO L93 Difference]: Finished difference Result 86095 states and 418282 transitions. [2020-10-09 13:55:38,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:55:38,485 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-09 13:55:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:55:38,747 INFO L225 Difference]: With dead ends: 86095 [2020-10-09 13:55:38,748 INFO L226 Difference]: Without dead ends: 86043 [2020-10-09 13:55:38,748 INFO L673 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 [2020-10-09 13:55:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86043 states. [2020-10-09 13:55:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86043 to 39046. [2020-10-09 13:55:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-10-09 13:55:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207545 transitions. [2020-10-09 13:55:41,517 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207545 transitions. Word has length 27 [2020-10-09 13:55:41,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:55:41,517 INFO L481 AbstractCegarLoop]: Abstraction has 39046 states and 207545 transitions. [2020-10-09 13:55:41,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:55:41,518 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207545 transitions. [2020-10-09 13:55:41,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:55:41,522 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:55:41,522 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:55:41,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:55:41,722 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]=== [2020-10-09 13:55:41,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:55:41,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1008837557, now seen corresponding path program 13 times [2020-10-09 13:55:41,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:55:41,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308784367] [2020-10-09 13:55:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:55:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:55:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:55:41,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308784367] [2020-10-09 13:55:41,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718278280] [2020-10-09 13:55:41,823 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 [2020-10-09 13:55:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:55:41,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:55:41,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:55:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:55:42,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:55:42,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:55:42,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925270947] [2020-10-09 13:55:42,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:55:42,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:55:42,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:55:42,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:55:42,090 INFO L87 Difference]: Start difference. First operand 39046 states and 207545 transitions. Second operand 20 states. [2020-10-09 13:55:45,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:55:45,870 INFO L93 Difference]: Finished difference Result 182203 states and 795088 transitions. [2020-10-09 13:55:45,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:55:45,871 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:55:45,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:55:46,376 INFO L225 Difference]: With dead ends: 182203 [2020-10-09 13:55:46,376 INFO L226 Difference]: Without dead ends: 182185 [2020-10-09 13:55:46,377 INFO L673 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 [2020-10-09 13:55:47,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182185 states. [2020-10-09 13:55:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182185 to 38881. [2020-10-09 13:55:49,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38881 states. [2020-10-09 13:55:50,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38881 states to 38881 states and 206740 transitions. [2020-10-09 13:55:50,122 INFO L78 Accepts]: Start accepts. Automaton has 38881 states and 206740 transitions. Word has length 27 [2020-10-09 13:55:50,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:55:50,123 INFO L481 AbstractCegarLoop]: Abstraction has 38881 states and 206740 transitions. [2020-10-09 13:55:50,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:55:50,123 INFO L276 IsEmpty]: Start isEmpty. Operand 38881 states and 206740 transitions. [2020-10-09 13:55:50,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:55:50,128 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:55:50,128 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:55:50,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:55:50,341 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]=== [2020-10-09 13:55:50,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:55:50,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1789198475, now seen corresponding path program 14 times [2020-10-09 13:55:50,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:55:50,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796623214] [2020-10-09 13:55:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:55:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:55:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:55:50,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796623214] [2020-10-09 13:55:50,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948003258] [2020-10-09 13:55:50,445 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 [2020-10-09 13:55:50,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:55:50,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:55:50,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:55:50,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:55:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:55:50,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:55:50,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:55:50,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995714062] [2020-10-09 13:55:50,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:55:50,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:55:50,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:55:50,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:55:50,720 INFO L87 Difference]: Start difference. First operand 38881 states and 206740 transitions. Second operand 20 states. [2020-10-09 13:55:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:55:54,833 INFO L93 Difference]: Finished difference Result 182814 states and 797848 transitions. [2020-10-09 13:55:54,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:55:54,834 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:55:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:55:55,358 INFO L225 Difference]: With dead ends: 182814 [2020-10-09 13:55:55,358 INFO L226 Difference]: Without dead ends: 182790 [2020-10-09 13:55:55,358 INFO L673 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 [2020-10-09 13:55:56,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182790 states. [2020-10-09 13:55:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182790 to 38491. [2020-10-09 13:55:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38491 states. [2020-10-09 13:55:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 204715 transitions. [2020-10-09 13:55:59,204 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 204715 transitions. Word has length 27 [2020-10-09 13:55:59,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:55:59,204 INFO L481 AbstractCegarLoop]: Abstraction has 38491 states and 204715 transitions. [2020-10-09 13:55:59,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:55:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 204715 transitions. [2020-10-09 13:55:59,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:55:59,210 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:55:59,210 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:55:59,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:55:59,411 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]=== [2020-10-09 13:55:59,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:55:59,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1120567157, now seen corresponding path program 15 times [2020-10-09 13:55:59,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:55:59,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636930763] [2020-10-09 13:55:59,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:55:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:55:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:55:59,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636930763] [2020-10-09 13:55:59,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855443667] [2020-10-09 13:55:59,518 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 [2020-10-09 13:55:59,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 13:55:59,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:55:59,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:55:59,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:55:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:55:59,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:55:59,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:55:59,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470289817] [2020-10-09 13:55:59,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:55:59,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:55:59,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:55:59,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:55:59,798 INFO L87 Difference]: Start difference. First operand 38491 states and 204715 transitions. Second operand 20 states. [2020-10-09 13:56:04,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:56:04,344 INFO L93 Difference]: Finished difference Result 181233 states and 790722 transitions. [2020-10-09 13:56:04,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:56:04,344 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:56:04,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:56:04,841 INFO L225 Difference]: With dead ends: 181233 [2020-10-09 13:56:04,841 INFO L226 Difference]: Without dead ends: 181215 [2020-10-09 13:56:04,841 INFO L673 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 [2020-10-09 13:56:06,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181215 states. [2020-10-09 13:56:08,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181215 to 38192. [2020-10-09 13:56:08,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38192 states. [2020-10-09 13:56:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38192 states to 38192 states and 203358 transitions. [2020-10-09 13:56:08,406 INFO L78 Accepts]: Start accepts. Automaton has 38192 states and 203358 transitions. Word has length 27 [2020-10-09 13:56:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:56:08,406 INFO L481 AbstractCegarLoop]: Abstraction has 38192 states and 203358 transitions. [2020-10-09 13:56:08,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:56:08,406 INFO L276 IsEmpty]: Start isEmpty. Operand 38192 states and 203358 transitions. [2020-10-09 13:56:08,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:56:08,410 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:56:08,410 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:56:08,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-09 13:56:08,611 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]=== [2020-10-09 13:56:08,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:56:08,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1610215819, now seen corresponding path program 16 times [2020-10-09 13:56:08,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:56:08,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433006559] [2020-10-09 13:56:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:56:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:56:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:56:08,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433006559] [2020-10-09 13:56:08,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168914216] [2020-10-09 13:56:08,716 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 [2020-10-09 13:56:08,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:56:08,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:56:08,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:56:08,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:56:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:56:08,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:56:08,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:56:08,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966588502] [2020-10-09 13:56:08,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:56:08,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:56:08,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:56:08,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:56:08,987 INFO L87 Difference]: Start difference. First operand 38192 states and 203358 transitions. Second operand 20 states. [2020-10-09 13:56:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:56:13,193 INFO L93 Difference]: Finished difference Result 181989 states and 794023 transitions. [2020-10-09 13:56:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:56:13,194 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:56:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:56:13,711 INFO L225 Difference]: With dead ends: 181989 [2020-10-09 13:56:13,711 INFO L226 Difference]: Without dead ends: 181965 [2020-10-09 13:56:13,712 INFO L673 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 [2020-10-09 13:56:16,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181965 states. [2020-10-09 13:56:17,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181965 to 37802. [2020-10-09 13:56:17,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37802 states. [2020-10-09 13:56:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37802 states to 37802 states and 201333 transitions. [2020-10-09 13:56:18,006 INFO L78 Accepts]: Start accepts. Automaton has 37802 states and 201333 transitions. Word has length 27 [2020-10-09 13:56:18,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:56:18,006 INFO L481 AbstractCegarLoop]: Abstraction has 37802 states and 201333 transitions. [2020-10-09 13:56:18,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:56:18,006 INFO L276 IsEmpty]: Start isEmpty. Operand 37802 states and 201333 transitions. [2020-10-09 13:56:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:56:18,010 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:56:18,010 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:56:18,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-09 13:56:18,211 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]=== [2020-10-09 13:56:18,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:56:18,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1846620555, now seen corresponding path program 17 times [2020-10-09 13:56:18,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:56:18,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822767241] [2020-10-09 13:56:18,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:56:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:56:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:56:18,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822767241] [2020-10-09 13:56:18,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21684678] [2020-10-09 13:56:18,316 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 [2020-10-09 13:56:18,407 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-09 13:56:18,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:56:18,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:56:18,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:56:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:56:18,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:56:18,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:56:18,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323866016] [2020-10-09 13:56:18,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:56:18,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:56:18,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:56:18,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:56:18,597 INFO L87 Difference]: Start difference. First operand 37802 states and 201333 transitions. Second operand 20 states. [2020-10-09 13:56:22,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:56:22,579 INFO L93 Difference]: Finished difference Result 183299 states and 799959 transitions. [2020-10-09 13:56:22,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:56:22,580 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:56:22,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:56:23,102 INFO L225 Difference]: With dead ends: 183299 [2020-10-09 13:56:23,103 INFO L226 Difference]: Without dead ends: 183281 [2020-10-09 13:56:23,103 INFO L673 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 [2020-10-09 13:56:24,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183281 states. [2020-10-09 13:56:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183281 to 37899. [2020-10-09 13:56:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37899 states. [2020-10-09 13:56:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 201806 transitions. [2020-10-09 13:56:27,742 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 201806 transitions. Word has length 27 [2020-10-09 13:56:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:56:27,742 INFO L481 AbstractCegarLoop]: Abstraction has 37899 states and 201806 transitions. [2020-10-09 13:56:27,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:56:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 201806 transitions. [2020-10-09 13:56:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:56:27,746 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:56:27,746 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:56:27,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-09 13:56:27,947 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]=== [2020-10-09 13:56:27,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:56:27,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1873315275, now seen corresponding path program 18 times [2020-10-09 13:56:27,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:56:27,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910805422] [2020-10-09 13:56:27,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:56:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:56:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:56:28,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910805422] [2020-10-09 13:56:28,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229431914] [2020-10-09 13:56:28,053 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 [2020-10-09 13:56:28,141 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 13:56:28,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:56:28,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 13:56:28,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:56:28,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:56:28,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:56:28,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 13:56:28,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462990939] [2020-10-09 13:56:28,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 13:56:28,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:56:28,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 13:56:28,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-09 13:56:28,330 INFO L87 Difference]: Start difference. First operand 37899 states and 201806 transitions. Second operand 20 states. [2020-10-09 13:56:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:56:32,415 INFO L93 Difference]: Finished difference Result 182890 states and 798217 transitions. [2020-10-09 13:56:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:56:32,416 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-09 13:56:32,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:56:32,939 INFO L225 Difference]: With dead ends: 182890 [2020-10-09 13:56:32,939 INFO L226 Difference]: Without dead ends: 182862 [2020-10-09 13:56:32,940 INFO L673 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 [2020-10-09 13:56:34,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182862 states. [2020-10-09 13:56:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182862 to 37637. [2020-10-09 13:56:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37637 states. [2020-10-09 13:56:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37637 states to 37637 states and 200371 transitions. [2020-10-09 13:56:37,842 INFO L78 Accepts]: Start accepts. Automaton has 37637 states and 200371 transitions. Word has length 27 [2020-10-09 13:56:37,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:56:37,843 INFO L481 AbstractCegarLoop]: Abstraction has 37637 states and 200371 transitions. [2020-10-09 13:56:37,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 13:56:37,843 INFO L276 IsEmpty]: Start isEmpty. Operand 37637 states and 200371 transitions. [2020-10-09 13:56:37,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:56:37,847 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:56:37,847 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:56:38,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-09 13:56:38,048 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]=== [2020-10-09 13:56:38,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:56:38,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1424539998, now seen corresponding path program 1 times [2020-10-09 13:56:38,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:56:38,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925832826] [2020-10-09 13:56:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:56:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:56:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:56:38,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925832826] [2020-10-09 13:56:38,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856590102] [2020-10-09 13:56:38,107 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 [2020-10-09 13:56:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:56:38,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:56:38,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:56:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:56:38,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:56:38,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:56:38,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962001671] [2020-10-09 13:56:38,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:56:38,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:56:38,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:56:38,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:56:38,271 INFO L87 Difference]: Start difference. First operand 37637 states and 200371 transitions. Second operand 12 states. [2020-10-09 13:56:39,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:56:39,302 INFO L93 Difference]: Finished difference Result 88848 states and 432494 transitions. [2020-10-09 13:56:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:56:39,303 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-09 13:56:39,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:56:39,577 INFO L225 Difference]: With dead ends: 88848 [2020-10-09 13:56:39,577 INFO L226 Difference]: Without dead ends: 88788 [2020-10-09 13:56:39,577 INFO L673 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 [2020-10-09 13:56:40,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88788 states. [2020-10-09 13:56:41,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88788 to 39292. [2020-10-09 13:56:41,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39292 states. [2020-10-09 13:56:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39292 states to 39292 states and 209387 transitions. [2020-10-09 13:56:41,726 INFO L78 Accepts]: Start accepts. Automaton has 39292 states and 209387 transitions. Word has length 27 [2020-10-09 13:56:41,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:56:41,726 INFO L481 AbstractCegarLoop]: Abstraction has 39292 states and 209387 transitions. [2020-10-09 13:56:41,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:56:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 39292 states and 209387 transitions. [2020-10-09 13:56:41,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:56:41,730 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:56:41,731 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:56:41,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:56:41,931 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]=== [2020-10-09 13:56:41,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:56:41,932 INFO L82 PathProgramCache]: Analyzing trace with hash -839318940, now seen corresponding path program 1 times [2020-10-09 13:56:41,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:56:41,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427808709] [2020-10-09 13:56:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:56:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:56:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:56:41,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427808709] [2020-10-09 13:56:41,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446615062] [2020-10-09 13:56:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-09 13:56:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:56:42,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 13:56:42,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:56:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:56:42,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:56:42,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 13:56:42,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43818646] [2020-10-09 13:56:42,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 13:56:42,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:56:42,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 13:56:42,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-09 13:56:42,151 INFO L87 Difference]: Start difference. First operand 39292 states and 209387 transitions. Second operand 12 states. [2020-10-09 13:56:43,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:56:43,152 INFO L93 Difference]: Finished difference Result 92913 states and 454143 transitions. [2020-10-09 13:56:43,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:56:43,153 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-09 13:56:43,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:56:43,480 INFO L225 Difference]: With dead ends: 92913 [2020-10-09 13:56:43,480 INFO L226 Difference]: Without dead ends: 92836 [2020-10-09 13:56:43,480 INFO L673 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 [2020-10-09 13:56:44,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92836 states. [2020-10-09 13:56:45,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92836 to 40834. [2020-10-09 13:56:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40834 states. [2020-10-09 13:56:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40834 states to 40834 states and 218021 transitions. [2020-10-09 13:56:45,742 INFO L78 Accepts]: Start accepts. Automaton has 40834 states and 218021 transitions. Word has length 27 [2020-10-09 13:56:45,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:56:45,742 INFO L481 AbstractCegarLoop]: Abstraction has 40834 states and 218021 transitions. [2020-10-09 13:56:45,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 13:56:45,742 INFO L276 IsEmpty]: Start isEmpty. Operand 40834 states and 218021 transitions. [2020-10-09 13:56:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:56:45,747 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:56:45,747 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:56:45,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-09 13:56:45,957 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]=== [2020-10-09 13:56:45,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:56:45,957 INFO L82 PathProgramCache]: Analyzing trace with hash -947827339, now seen corresponding path program 19 times [2020-10-09 13:56:45,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:56:45,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474732658] [2020-10-09 13:56:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:56:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:56:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:56:46,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474732658] [2020-10-09 13:56:46,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:56:46,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-09 13:56:46,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578114836] [2020-10-09 13:56:46,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 13:56:46,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:56:46,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 13:56:46,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-09 13:56:46,080 INFO L87 Difference]: Start difference. First operand 40834 states and 218021 transitions. Second operand 11 states. [2020-10-09 13:56:50,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:56:50,087 INFO L93 Difference]: Finished difference Result 180696 states and 786321 transitions. [2020-10-09 13:56:50,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:56:50,088 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-09 13:56:50,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:56:50,594 INFO L225 Difference]: With dead ends: 180696 [2020-10-09 13:56:50,594 INFO L226 Difference]: Without dead ends: 180678 [2020-10-09 13:56:50,595 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-09 13:56:52,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180678 states. [2020-10-09 13:56:54,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180678 to 40673. [2020-10-09 13:56:54,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40673 states. [2020-10-09 13:56:54,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 217228 transitions. [2020-10-09 13:56:54,394 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 217228 transitions. Word has length 27 [2020-10-09 13:56:54,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:56:54,394 INFO L481 AbstractCegarLoop]: Abstraction has 40673 states and 217228 transitions. [2020-10-09 13:56:54,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 13:56:54,394 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 217228 transitions. [2020-10-09 13:56:54,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:56:54,399 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:56:54,399 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:56:54,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-10-09 13:56:54,399 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]=== [2020-10-09 13:56:54,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:56:54,400 INFO L82 PathProgramCache]: Analyzing trace with hash -963570379, now seen corresponding path program 20 times [2020-10-09 13:56:54,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:56:54,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300027511] [2020-10-09 13:56:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:56:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:56:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:56:54,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300027511] [2020-10-09 13:56:54,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:56:54,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-09 13:56:54,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452866589] [2020-10-09 13:56:54,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 13:56:54,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:56:54,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 13:56:54,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-09 13:56:54,505 INFO L87 Difference]: Start difference. First operand 40673 states and 217228 transitions. Second operand 11 states. [2020-10-09 13:56:59,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:56:59,051 INFO L93 Difference]: Finished difference Result 180287 states and 784579 transitions. [2020-10-09 13:56:59,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:56:59,052 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-09 13:56:59,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:56:59,551 INFO L225 Difference]: With dead ends: 180287 [2020-10-09 13:56:59,551 INFO L226 Difference]: Without dead ends: 180263 [2020-10-09 13:56:59,551 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-09 13:57:01,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180263 states. [2020-10-09 13:57:03,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180263 to 40321. [2020-10-09 13:57:03,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40321 states. [2020-10-09 13:57:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 215433 transitions. [2020-10-09 13:57:03,250 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 215433 transitions. Word has length 27 [2020-10-09 13:57:03,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:57:03,250 INFO L481 AbstractCegarLoop]: Abstraction has 40321 states and 215433 transitions. [2020-10-09 13:57:03,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 13:57:03,250 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 215433 transitions. [2020-10-09 13:57:03,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:57:03,255 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:57:03,255 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:57:03,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-10-09 13:57:03,256 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]=== [2020-10-09 13:57:03,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:57:03,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1412510069, now seen corresponding path program 21 times [2020-10-09 13:57:03,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:57:03,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318425621] [2020-10-09 13:57:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:57:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:57:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:57:03,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318425621] [2020-10-09 13:57:03,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:57:03,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-09 13:57:03,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384542288] [2020-10-09 13:57:03,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 13:57:03,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:57:03,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 13:57:03,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-09 13:57:03,362 INFO L87 Difference]: Start difference. First operand 40321 states and 215433 transitions. Second operand 11 states. [2020-10-09 13:57:07,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:57:07,152 INFO L93 Difference]: Finished difference Result 179815 states and 782456 transitions. [2020-10-09 13:57:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:57:07,153 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-09 13:57:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:57:07,659 INFO L225 Difference]: With dead ends: 179815 [2020-10-09 13:57:07,660 INFO L226 Difference]: Without dead ends: 179797 [2020-10-09 13:57:07,660 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-09 13:57:10,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179797 states. [2020-10-09 13:57:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179797 to 40030. [2020-10-09 13:57:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40030 states. [2020-10-09 13:57:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40030 states to 40030 states and 214096 transitions. [2020-10-09 13:57:12,045 INFO L78 Accepts]: Start accepts. Automaton has 40030 states and 214096 transitions. Word has length 27 [2020-10-09 13:57:12,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:57:12,045 INFO L481 AbstractCegarLoop]: Abstraction has 40030 states and 214096 transitions. [2020-10-09 13:57:12,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 13:57:12,045 INFO L276 IsEmpty]: Start isEmpty. Operand 40030 states and 214096 transitions. [2020-10-09 13:57:12,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:57:12,050 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:57:12,051 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:57:12,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-10-09 13:57:12,051 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]=== [2020-10-09 13:57:12,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:57:12,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1385815349, now seen corresponding path program 22 times [2020-10-09 13:57:12,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:57:12,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649928396] [2020-10-09 13:57:12,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:57:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:57:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:57:12,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649928396] [2020-10-09 13:57:12,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:57:12,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-09 13:57:12,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279498667] [2020-10-09 13:57:12,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 13:57:12,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:57:12,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 13:57:12,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-09 13:57:12,155 INFO L87 Difference]: Start difference. First operand 40030 states and 214096 transitions. Second operand 11 states. [2020-10-09 13:57:16,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:57:16,030 INFO L93 Difference]: Finished difference Result 179585 states and 781438 transitions. [2020-10-09 13:57:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:57:16,031 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-09 13:57:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:57:16,532 INFO L225 Difference]: With dead ends: 179585 [2020-10-09 13:57:16,532 INFO L226 Difference]: Without dead ends: 179561 [2020-10-09 13:57:16,532 INFO L673 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 [2020-10-09 13:57:18,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179561 states. [2020-10-09 13:57:20,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179561 to 39678. [2020-10-09 13:57:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39678 states. [2020-10-09 13:57:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39678 states to 39678 states and 212301 transitions. [2020-10-09 13:57:21,111 INFO L78 Accepts]: Start accepts. Automaton has 39678 states and 212301 transitions. Word has length 27 [2020-10-09 13:57:21,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:57:21,111 INFO L481 AbstractCegarLoop]: Abstraction has 39678 states and 212301 transitions. [2020-10-09 13:57:21,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 13:57:21,111 INFO L276 IsEmpty]: Start isEmpty. Operand 39678 states and 212301 transitions. [2020-10-09 13:57:21,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:57:21,116 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:57:21,116 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:57:21,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-10-09 13:57:21,116 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]=== [2020-10-09 13:57:21,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:57:21,117 INFO L82 PathProgramCache]: Analyzing trace with hash -847392523, now seen corresponding path program 23 times [2020-10-09 13:57:21,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:57:21,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476932676] [2020-10-09 13:57:21,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:57:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:57:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:57:21,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476932676] [2020-10-09 13:57:21,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:57:21,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-09 13:57:21,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308833289] [2020-10-09 13:57:21,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 13:57:21,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:57:21,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 13:57:21,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-09 13:57:21,229 INFO L87 Difference]: Start difference. First operand 39678 states and 212301 transitions. Second operand 11 states. [2020-10-09 13:57:25,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:57:25,163 INFO L93 Difference]: Finished difference Result 179113 states and 779315 transitions. [2020-10-09 13:57:25,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:57:25,165 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-09 13:57:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:57:25,673 INFO L225 Difference]: With dead ends: 179113 [2020-10-09 13:57:25,673 INFO L226 Difference]: Without dead ends: 179095 [2020-10-09 13:57:25,673 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-09 13:57:27,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179095 states. [2020-10-09 13:57:30,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179095 to 39387. [2020-10-09 13:57:30,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39387 states. [2020-10-09 13:57:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39387 states to 39387 states and 210964 transitions. [2020-10-09 13:57:30,419 INFO L78 Accepts]: Start accepts. Automaton has 39387 states and 210964 transitions. Word has length 27 [2020-10-09 13:57:30,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:57:30,419 INFO L481 AbstractCegarLoop]: Abstraction has 39387 states and 210964 transitions. [2020-10-09 13:57:30,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 13:57:30,419 INFO L276 IsEmpty]: Start isEmpty. Operand 39387 states and 210964 transitions. [2020-10-09 13:57:30,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:57:30,424 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:57:30,424 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:57:30,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-10-09 13:57:30,425 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]=== [2020-10-09 13:57:30,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:57:30,425 INFO L82 PathProgramCache]: Analyzing trace with hash -858344203, now seen corresponding path program 24 times [2020-10-09 13:57:30,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:57:30,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36120136] [2020-10-09 13:57:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:57:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:57:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:57:30,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36120136] [2020-10-09 13:57:30,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:57:30,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-09 13:57:30,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854961234] [2020-10-09 13:57:30,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 13:57:30,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:57:30,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 13:57:30,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-09 13:57:30,534 INFO L87 Difference]: Start difference. First operand 39387 states and 210964 transitions. Second operand 11 states. [2020-10-09 13:57:34,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:57:34,538 INFO L93 Difference]: Finished difference Result 178704 states and 777573 transitions. [2020-10-09 13:57:34,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-09 13:57:34,539 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-09 13:57:34,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:57:35,049 INFO L225 Difference]: With dead ends: 178704 [2020-10-09 13:57:35,049 INFO L226 Difference]: Without dead ends: 178675 [2020-10-09 13:57:35,050 INFO L673 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 [2020-10-09 13:57:36,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178675 states. [2020-10-09 13:57:38,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178675 to 38805. [2020-10-09 13:57:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38805 states. [2020-10-09 13:57:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38805 states to 38805 states and 208284 transitions. [2020-10-09 13:57:38,944 INFO L78 Accepts]: Start accepts. Automaton has 38805 states and 208284 transitions. Word has length 27 [2020-10-09 13:57:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:57:38,944 INFO L481 AbstractCegarLoop]: Abstraction has 38805 states and 208284 transitions. [2020-10-09 13:57:38,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 13:57:38,944 INFO L276 IsEmpty]: Start isEmpty. Operand 38805 states and 208284 transitions. [2020-10-09 13:57:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:57:38,949 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:57:38,949 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:57:38,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-10-09 13:57:38,950 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]=== [2020-10-09 13:57:38,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:57:38,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1294328210, now seen corresponding path program 2 times [2020-10-09 13:57:38,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:57:38,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975580894] [2020-10-09 13:57:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:57:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:57:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 13:57:39,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975580894] [2020-10-09 13:57:39,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:57:39,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:57:39,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681098745] [2020-10-09 13:57:39,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:57:39,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:57:39,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:57:39,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:57:39,017 INFO L87 Difference]: Start difference. First operand 38805 states and 208284 transitions. Second operand 7 states. [2020-10-09 13:57:40,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:57:40,511 INFO L93 Difference]: Finished difference Result 90966 states and 445145 transitions. [2020-10-09 13:57:40,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:57:40,512 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-09 13:57:40,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:57:40,806 INFO L225 Difference]: With dead ends: 90966 [2020-10-09 13:57:40,806 INFO L226 Difference]: Without dead ends: 90889 [2020-10-09 13:57:40,806 INFO L673 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 [2020-10-09 13:57:41,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90889 states. [2020-10-09 13:57:42,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90889 to 40453. [2020-10-09 13:57:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40453 states. [2020-10-09 13:57:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 217061 transitions. [2020-10-09 13:57:43,018 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 217061 transitions. Word has length 27 [2020-10-09 13:57:43,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:57:43,018 INFO L481 AbstractCegarLoop]: Abstraction has 40453 states and 217061 transitions. [2020-10-09 13:57:43,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:57:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 217061 transitions. [2020-10-09 13:57:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:57:43,023 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:57:43,023 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:57:43,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-10-09 13:57:43,023 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]=== [2020-10-09 13:57:43,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:57:43,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1294339618, now seen corresponding path program 2 times [2020-10-09 13:57:43,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:57:43,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547928355] [2020-10-09 13:57:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:57:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:57:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 13:57:43,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547928355] [2020-10-09 13:57:43,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:57:43,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:57:43,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670709437] [2020-10-09 13:57:43,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:57:43,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:57:43,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:57:43,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:57:43,076 INFO L87 Difference]: Start difference. First operand 40453 states and 217061 transitions. Second operand 7 states. [2020-10-09 13:57:43,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:57:43,970 INFO L93 Difference]: Finished difference Result 91560 states and 447373 transitions. [2020-10-09 13:57:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:57:43,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-09 13:57:43,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:57:44,264 INFO L225 Difference]: With dead ends: 91560 [2020-10-09 13:57:44,264 INFO L226 Difference]: Without dead ends: 91483 [2020-10-09 13:57:44,264 INFO L673 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 [2020-10-09 13:57:45,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91483 states. [2020-10-09 13:57:46,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91483 to 41467. [2020-10-09 13:57:46,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41467 states. [2020-10-09 13:57:46,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41467 states to 41467 states and 222391 transitions. [2020-10-09 13:57:46,542 INFO L78 Accepts]: Start accepts. Automaton has 41467 states and 222391 transitions. Word has length 27 [2020-10-09 13:57:46,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:57:46,542 INFO L481 AbstractCegarLoop]: Abstraction has 41467 states and 222391 transitions. [2020-10-09 13:57:46,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:57:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 41467 states and 222391 transitions. [2020-10-09 13:57:46,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:57:46,548 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:57:46,548 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:57:46,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-10-09 13:57:46,548 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]=== [2020-10-09 13:57:46,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:57:46,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1294356017, now seen corresponding path program 2 times [2020-10-09 13:57:46,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:57:46,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346268508] [2020-10-09 13:57:46,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:57:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:57:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 13:57:46,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346268508] [2020-10-09 13:57:46,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:57:46,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:57:46,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355103549] [2020-10-09 13:57:46,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:57:46,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:57:46,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:57:46,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:57:46,607 INFO L87 Difference]: Start difference. First operand 41467 states and 222391 transitions. Second operand 7 states. [2020-10-09 13:57:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:57:47,563 INFO L93 Difference]: Finished difference Result 92674 states and 452263 transitions. [2020-10-09 13:57:47,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:57:47,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-09 13:57:47,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:57:47,851 INFO L225 Difference]: With dead ends: 92674 [2020-10-09 13:57:47,851 INFO L226 Difference]: Without dead ends: 92597 [2020-10-09 13:57:47,852 INFO L673 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 [2020-10-09 13:57:49,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92597 states. [2020-10-09 13:57:50,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92597 to 42564. [2020-10-09 13:57:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42564 states. [2020-10-09 13:57:50,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42564 states to 42564 states and 227862 transitions. [2020-10-09 13:57:50,668 INFO L78 Accepts]: Start accepts. Automaton has 42564 states and 227862 transitions. Word has length 27 [2020-10-09 13:57:50,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:57:50,669 INFO L481 AbstractCegarLoop]: Abstraction has 42564 states and 227862 transitions. [2020-10-09 13:57:50,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:57:50,669 INFO L276 IsEmpty]: Start isEmpty. Operand 42564 states and 227862 transitions. [2020-10-09 13:57:50,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-09 13:57:50,674 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:57:50,674 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:57:50,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-10-09 13:57:50,674 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]=== [2020-10-09 13:57:50,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:57:50,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1294335650, now seen corresponding path program 2 times [2020-10-09 13:57:50,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:57:50,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416167811] [2020-10-09 13:57:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:57:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:57:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 13:57:50,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416167811] [2020-10-09 13:57:50,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:57:50,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 13:57:50,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472290049] [2020-10-09 13:57:50,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 13:57:50,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:57:50,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 13:57:50,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-09 13:57:50,745 INFO L87 Difference]: Start difference. First operand 42564 states and 227862 transitions. Second operand 7 states. [2020-10-09 13:57:51,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:57:51,700 INFO L93 Difference]: Finished difference Result 93922 states and 458312 transitions. [2020-10-09 13:57:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 13:57:51,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-09 13:57:51,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:57:51,992 INFO L225 Difference]: With dead ends: 93922 [2020-10-09 13:57:51,993 INFO L226 Difference]: Without dead ends: 93845 [2020-10-09 13:57:51,993 INFO L673 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 [2020-10-09 13:57:53,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93845 states. [2020-10-09 13:57:54,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93845 to 43794. [2020-10-09 13:57:54,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-10-09 13:57:54,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-10-09 13:57:54,331 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-10-09 13:57:54,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:57:54,331 INFO L481 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-10-09 13:57:54,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 13:57:54,331 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-10-09 13:57:54,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:57:54,338 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:57:54,338 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:57:54,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-10-09 13:57:54,339 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]=== [2020-10-09 13:57:54,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:57:54,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1919686780, now seen corresponding path program 1 times [2020-10-09 13:57:54,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:57:54,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723576003] [2020-10-09 13:57:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:57:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:57:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:57:54,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723576003] [2020-10-09 13:57:54,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89786526] [2020-10-09 13:57:54,426 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 [2020-10-09 13:57:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:57:54,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:57:54,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:57:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:57:54,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:57:54,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:57:54,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433036758] [2020-10-09 13:57:54,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:57:54,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:57:54,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:57:54,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:57:54,654 INFO L87 Difference]: Start difference. First operand 43794 states and 233791 transitions. Second operand 16 states. [2020-10-09 13:57:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:57:56,733 INFO L93 Difference]: Finished difference Result 140781 states and 654227 transitions. [2020-10-09 13:57:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:57:56,734 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:57:56,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:57:57,151 INFO L225 Difference]: With dead ends: 140781 [2020-10-09 13:57:57,152 INFO L226 Difference]: Without dead ends: 140737 [2020-10-09 13:57:57,152 INFO L673 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 [2020-10-09 13:57:59,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140737 states. [2020-10-09 13:58:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140737 to 43602. [2020-10-09 13:58:00,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43602 states. [2020-10-09 13:58:00,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43602 states to 43602 states and 232379 transitions. [2020-10-09 13:58:00,786 INFO L78 Accepts]: Start accepts. Automaton has 43602 states and 232379 transitions. Word has length 29 [2020-10-09 13:58:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:58:00,787 INFO L481 AbstractCegarLoop]: Abstraction has 43602 states and 232379 transitions. [2020-10-09 13:58:00,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:58:00,787 INFO L276 IsEmpty]: Start isEmpty. Operand 43602 states and 232379 transitions. [2020-10-09 13:58:00,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:58:00,794 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:58:00,794 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:58:00,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:58:00,995 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]=== [2020-10-09 13:58:00,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:58:00,996 INFO L82 PathProgramCache]: Analyzing trace with hash -422590804, now seen corresponding path program 1 times [2020-10-09 13:58:00,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:58:00,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663238406] [2020-10-09 13:58:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:58:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:58:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:58:01,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663238406] [2020-10-09 13:58:01,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241898214] [2020-10-09 13:58:01,073 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 [2020-10-09 13:58:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:58:01,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:58:01,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:58:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:58:01,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:58:01,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:58:01,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335457323] [2020-10-09 13:58:01,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:58:01,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:58:01,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:58:01,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:58:01,295 INFO L87 Difference]: Start difference. First operand 43602 states and 232379 transitions. Second operand 16 states. [2020-10-09 13:58:03,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:58:03,261 INFO L93 Difference]: Finished difference Result 139468 states and 647412 transitions. [2020-10-09 13:58:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:58:03,262 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:58:03,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:58:03,691 INFO L225 Difference]: With dead ends: 139468 [2020-10-09 13:58:03,691 INFO L226 Difference]: Without dead ends: 139424 [2020-10-09 13:58:03,692 INFO L673 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 [2020-10-09 13:58:04,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139424 states. [2020-10-09 13:58:06,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139424 to 43506. [2020-10-09 13:58:06,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43506 states. [2020-10-09 13:58:07,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43506 states to 43506 states and 231546 transitions. [2020-10-09 13:58:07,893 INFO L78 Accepts]: Start accepts. Automaton has 43506 states and 231546 transitions. Word has length 29 [2020-10-09 13:58:07,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:58:07,893 INFO L481 AbstractCegarLoop]: Abstraction has 43506 states and 231546 transitions. [2020-10-09 13:58:07,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:58:07,893 INFO L276 IsEmpty]: Start isEmpty. Operand 43506 states and 231546 transitions. [2020-10-09 13:58:07,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:58:07,901 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:58:07,901 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:58:08,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:58:08,102 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]=== [2020-10-09 13:58:08,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:58:08,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1608517554, now seen corresponding path program 1 times [2020-10-09 13:58:08,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:58:08,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893313069] [2020-10-09 13:58:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:58:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:58:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:58:08,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893313069] [2020-10-09 13:58:08,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125252988] [2020-10-09 13:58:08,185 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 [2020-10-09 13:58:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:58:08,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:58:08,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:58:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:58:08,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:58:08,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:58:08,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297576586] [2020-10-09 13:58:08,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:58:08,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:58:08,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:58:08,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:58:08,405 INFO L87 Difference]: Start difference. First operand 43506 states and 231546 transitions. Second operand 16 states. [2020-10-09 13:58:10,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:58:10,419 INFO L93 Difference]: Finished difference Result 138170 states and 641113 transitions. [2020-10-09 13:58:10,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:58:10,420 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:58:10,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:58:10,830 INFO L225 Difference]: With dead ends: 138170 [2020-10-09 13:58:10,830 INFO L226 Difference]: Without dead ends: 138126 [2020-10-09 13:58:10,831 INFO L673 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 [2020-10-09 13:58:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138126 states. [2020-10-09 13:58:13,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138126 to 43481. [2020-10-09 13:58:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43481 states. [2020-10-09 13:58:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43481 states to 43481 states and 231123 transitions. [2020-10-09 13:58:13,927 INFO L78 Accepts]: Start accepts. Automaton has 43481 states and 231123 transitions. Word has length 29 [2020-10-09 13:58:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:58:13,927 INFO L481 AbstractCegarLoop]: Abstraction has 43481 states and 231123 transitions. [2020-10-09 13:58:13,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:58:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 43481 states and 231123 transitions. [2020-10-09 13:58:13,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:58:13,934 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:58:13,935 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:58:14,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:58:14,135 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]=== [2020-10-09 13:58:14,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:58:14,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1153508284, now seen corresponding path program 2 times [2020-10-09 13:58:14,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:58:14,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528837478] [2020-10-09 13:58:14,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:58:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:58:14,215 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-09 13:58:14,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528837478] [2020-10-09 13:58:14,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111228459] [2020-10-09 13:58:14,216 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 [2020-10-09 13:58:14,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:58:14,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:58:14,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:58:14,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:58:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-09 13:58:14,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:58:14,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:58:14,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079794349] [2020-10-09 13:58:14,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:58:14,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:58:14,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:58:14,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:58:14,442 INFO L87 Difference]: Start difference. First operand 43481 states and 231123 transitions. Second operand 16 states. [2020-10-09 13:58:16,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:58:16,553 INFO L93 Difference]: Finished difference Result 135919 states and 629813 transitions. [2020-10-09 13:58:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:58:16,554 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:58:16,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:58:16,985 INFO L225 Difference]: With dead ends: 135919 [2020-10-09 13:58:16,985 INFO L226 Difference]: Without dead ends: 135873 [2020-10-09 13:58:16,986 INFO L673 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 [2020-10-09 13:58:19,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135873 states. [2020-10-09 13:58:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135873 to 43684. [2020-10-09 13:58:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43684 states. [2020-10-09 13:58:20,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43684 states to 43684 states and 232067 transitions. [2020-10-09 13:58:20,693 INFO L78 Accepts]: Start accepts. Automaton has 43684 states and 232067 transitions. Word has length 29 [2020-10-09 13:58:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:58:20,693 INFO L481 AbstractCegarLoop]: Abstraction has 43684 states and 232067 transitions. [2020-10-09 13:58:20,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:58:20,693 INFO L276 IsEmpty]: Start isEmpty. Operand 43684 states and 232067 transitions. [2020-10-09 13:58:20,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:58:20,701 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:58:20,701 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:58:20,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:58:20,902 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]=== [2020-10-09 13:58:20,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:58:20,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1153496876, now seen corresponding path program 2 times [2020-10-09 13:58:20,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:58:20,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669393307] [2020-10-09 13:58:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:58:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:58:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-09 13:58:20,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669393307] [2020-10-09 13:58:20,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826068631] [2020-10-09 13:58:20,993 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 [2020-10-09 13:58:21,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:58:21,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:58:21,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:58:21,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:58:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-09 13:58:21,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:58:21,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:58:21,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812849038] [2020-10-09 13:58:21,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:58:21,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:58:21,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:58:21,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:58:21,255 INFO L87 Difference]: Start difference. First operand 43684 states and 232067 transitions. Second operand 16 states. [2020-10-09 13:58:23,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:58:23,516 INFO L93 Difference]: Finished difference Result 134838 states and 624786 transitions. [2020-10-09 13:58:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:58:23,517 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:58:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:58:23,914 INFO L225 Difference]: With dead ends: 134838 [2020-10-09 13:58:23,914 INFO L226 Difference]: Without dead ends: 134792 [2020-10-09 13:58:23,914 INFO L673 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 [2020-10-09 13:58:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134792 states. [2020-10-09 13:58:26,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134792 to 43622. [2020-10-09 13:58:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43622 states. [2020-10-09 13:58:26,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43622 states to 43622 states and 231628 transitions. [2020-10-09 13:58:26,954 INFO L78 Accepts]: Start accepts. Automaton has 43622 states and 231628 transitions. Word has length 29 [2020-10-09 13:58:26,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:58:26,954 INFO L481 AbstractCegarLoop]: Abstraction has 43622 states and 231628 transitions. [2020-10-09 13:58:26,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:58:26,955 INFO L276 IsEmpty]: Start isEmpty. Operand 43622 states and 231628 transitions. [2020-10-09 13:58:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:58:26,963 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:58:26,963 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:58:27,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:58:27,164 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]=== [2020-10-09 13:58:27,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:58:27,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1153500844, now seen corresponding path program 2 times [2020-10-09 13:58:27,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:58:27,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617964615] [2020-10-09 13:58:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:58:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:58:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-09 13:58:27,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617964615] [2020-10-09 13:58:27,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679816912] [2020-10-09 13:58:27,244 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 [2020-10-09 13:58:27,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:58:27,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:58:27,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:58:27,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:58:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-09 13:58:28,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:58:28,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:58:28,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999689650] [2020-10-09 13:58:28,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:58:28,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:58:28,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:58:28,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:58:28,123 INFO L87 Difference]: Start difference. First operand 43622 states and 231628 transitions. Second operand 16 states. [2020-10-09 13:58:30,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:58:30,291 INFO L93 Difference]: Finished difference Result 133406 states and 618320 transitions. [2020-10-09 13:58:30,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:58:30,292 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:58:30,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:58:30,693 INFO L225 Difference]: With dead ends: 133406 [2020-10-09 13:58:30,694 INFO L226 Difference]: Without dead ends: 133360 [2020-10-09 13:58:30,694 INFO L673 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 [2020-10-09 13:58:32,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133360 states. [2020-10-09 13:58:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133360 to 43128. [2020-10-09 13:58:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43128 states. [2020-10-09 13:58:33,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43128 states to 43128 states and 228903 transitions. [2020-10-09 13:58:33,762 INFO L78 Accepts]: Start accepts. Automaton has 43128 states and 228903 transitions. Word has length 29 [2020-10-09 13:58:33,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:58:33,762 INFO L481 AbstractCegarLoop]: Abstraction has 43128 states and 228903 transitions. [2020-10-09 13:58:33,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:58:33,762 INFO L276 IsEmpty]: Start isEmpty. Operand 43128 states and 228903 transitions. [2020-10-09 13:58:33,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:58:33,771 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:58:33,771 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:58:33,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:58:33,977 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]=== [2020-10-09 13:58:33,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:58:33,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1591871556, now seen corresponding path program 3 times [2020-10-09 13:58:33,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:58:33,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656609317] [2020-10-09 13:58:33,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:58:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:58:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-09 13:58:34,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656609317] [2020-10-09 13:58:34,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536840028] [2020-10-09 13:58:34,061 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 [2020-10-09 13:58:34,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-09 13:58:34,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:58:34,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:58:34,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:58:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-09 13:58:34,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:58:34,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:58:34,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704334842] [2020-10-09 13:58:34,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:58:34,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:58:34,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:58:34,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:58:34,327 INFO L87 Difference]: Start difference. First operand 43128 states and 228903 transitions. Second operand 16 states. [2020-10-09 13:58:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:58:36,356 INFO L93 Difference]: Finished difference Result 135323 states and 626681 transitions. [2020-10-09 13:58:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:58:36,357 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:58:36,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:58:36,807 INFO L225 Difference]: With dead ends: 135323 [2020-10-09 13:58:36,807 INFO L226 Difference]: Without dead ends: 135279 [2020-10-09 13:58:36,807 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-09 13:58:38,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135279 states. [2020-10-09 13:58:40,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135279 to 42900. [2020-10-09 13:58:40,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42900 states. [2020-10-09 13:58:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42900 states to 42900 states and 227522 transitions. [2020-10-09 13:58:40,478 INFO L78 Accepts]: Start accepts. Automaton has 42900 states and 227522 transitions. Word has length 29 [2020-10-09 13:58:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:58:40,478 INFO L481 AbstractCegarLoop]: Abstraction has 42900 states and 227522 transitions. [2020-10-09 13:58:40,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:58:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 42900 states and 227522 transitions. [2020-10-09 13:58:40,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:58:40,486 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:58:40,486 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:58:40,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:58:40,687 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]=== [2020-10-09 13:58:40,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:58:40,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1973162059, now seen corresponding path program 1 times [2020-10-09 13:58:40,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:58:40,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005967487] [2020-10-09 13:58:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:58:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:58:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:58:40,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005967487] [2020-10-09 13:58:40,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024401579] [2020-10-09 13:58:40,775 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 [2020-10-09 13:58:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:58:40,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:58:40,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:58:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:58:41,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:58:41,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:58:41,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878985115] [2020-10-09 13:58:41,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:58:41,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:58:41,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:58:41,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:58:41,001 INFO L87 Difference]: Start difference. First operand 42900 states and 227522 transitions. Second operand 16 states. [2020-10-09 13:58:42,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:58:42,954 INFO L93 Difference]: Finished difference Result 141153 states and 654921 transitions. [2020-10-09 13:58:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:58:42,955 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:58:42,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:58:43,386 INFO L225 Difference]: With dead ends: 141153 [2020-10-09 13:58:43,387 INFO L226 Difference]: Without dead ends: 141109 [2020-10-09 13:58:43,387 INFO L673 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 [2020-10-09 13:58:44,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141109 states. [2020-10-09 13:58:46,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141109 to 42878. [2020-10-09 13:58:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42878 states. [2020-10-09 13:58:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42878 states to 42878 states and 227112 transitions. [2020-10-09 13:58:46,486 INFO L78 Accepts]: Start accepts. Automaton has 42878 states and 227112 transitions. Word has length 29 [2020-10-09 13:58:46,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:58:46,487 INFO L481 AbstractCegarLoop]: Abstraction has 42878 states and 227112 transitions. [2020-10-09 13:58:46,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:58:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 42878 states and 227112 transitions. [2020-10-09 13:58:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:58:46,495 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:58:46,495 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:58:46,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-09 13:58:46,696 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]=== [2020-10-09 13:58:46,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:58:46,696 INFO L82 PathProgramCache]: Analyzing trace with hash -290696879, now seen corresponding path program 1 times [2020-10-09 13:58:46,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:58:46,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445991511] [2020-10-09 13:58:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:58:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:58:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:58:46,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445991511] [2020-10-09 13:58:46,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645534996] [2020-10-09 13:58:46,779 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 [2020-10-09 13:58:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:58:46,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:58:46,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:58:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 13:58:47,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:58:47,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:58:47,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574025022] [2020-10-09 13:58:47,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:58:47,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:58:47,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:58:47,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:58:47,008 INFO L87 Difference]: Start difference. First operand 42878 states and 227112 transitions. Second operand 16 states. [2020-10-09 13:58:49,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:58:49,432 INFO L93 Difference]: Finished difference Result 139558 states and 647187 transitions. [2020-10-09 13:58:49,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:58:49,433 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:58:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:58:49,850 INFO L225 Difference]: With dead ends: 139558 [2020-10-09 13:58:49,850 INFO L226 Difference]: Without dead ends: 139514 [2020-10-09 13:58:49,850 INFO L673 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 [2020-10-09 13:58:51,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139514 states. [2020-10-09 13:58:52,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139514 to 42856. [2020-10-09 13:58:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42856 states. [2020-10-09 13:58:52,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42856 states to 42856 states and 226689 transitions. [2020-10-09 13:58:52,850 INFO L78 Accepts]: Start accepts. Automaton has 42856 states and 226689 transitions. Word has length 29 [2020-10-09 13:58:52,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:58:52,850 INFO L481 AbstractCegarLoop]: Abstraction has 42856 states and 226689 transitions. [2020-10-09 13:58:52,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:58:52,850 INFO L276 IsEmpty]: Start isEmpty. Operand 42856 states and 226689 transitions. [2020-10-09 13:58:52,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:58:52,858 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:58:52,858 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:58:53,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-09 13:58:53,059 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]=== [2020-10-09 13:58:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:58:53,060 INFO L82 PathProgramCache]: Analyzing trace with hash -745717557, now seen corresponding path program 2 times [2020-10-09 13:58:53,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:58:53,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879914566] [2020-10-09 13:58:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:58:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:58:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-09 13:58:53,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879914566] [2020-10-09 13:58:53,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173750210] [2020-10-09 13:58:53,139 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 [2020-10-09 13:58:53,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:58:53,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:58:53,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:58:53,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:58:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-09 13:58:53,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:58:53,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:58:53,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528332140] [2020-10-09 13:58:53,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:58:53,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:58:53,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:58:53,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:58:53,368 INFO L87 Difference]: Start difference. First operand 42856 states and 226689 transitions. Second operand 16 states. [2020-10-09 13:58:55,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:58:55,515 INFO L93 Difference]: Finished difference Result 137680 states and 637585 transitions. [2020-10-09 13:58:55,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:58:55,516 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:58:55,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:58:55,936 INFO L225 Difference]: With dead ends: 137680 [2020-10-09 13:58:55,937 INFO L226 Difference]: Without dead ends: 137630 [2020-10-09 13:58:55,937 INFO L673 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 [2020-10-09 13:58:57,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137630 states. [2020-10-09 13:58:59,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137630 to 42997. [2020-10-09 13:58:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42997 states. [2020-10-09 13:58:59,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42997 states to 42997 states and 227356 transitions. [2020-10-09 13:58:59,887 INFO L78 Accepts]: Start accepts. Automaton has 42997 states and 227356 transitions. Word has length 29 [2020-10-09 13:58:59,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:58:59,887 INFO L481 AbstractCegarLoop]: Abstraction has 42997 states and 227356 transitions. [2020-10-09 13:58:59,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:58:59,887 INFO L276 IsEmpty]: Start isEmpty. Operand 42997 states and 227356 transitions. [2020-10-09 13:58:59,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:58:59,896 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:58:59,896 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:59:00,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-09 13:59:00,097 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]=== [2020-10-09 13:59:00,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:59:00,097 INFO L82 PathProgramCache]: Analyzing trace with hash -745733956, now seen corresponding path program 4 times [2020-10-09 13:59:00,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:59:00,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105199067] [2020-10-09 13:59:00,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:59:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:59:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-09 13:59:00,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105199067] [2020-10-09 13:59:00,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525202859] [2020-10-09 13:59:00,180 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 [2020-10-09 13:59:00,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:59:00,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:59:00,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:59:00,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:59:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-09 13:59:00,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:59:00,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:59:00,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877351547] [2020-10-09 13:59:00,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:59:00,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:59:00,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:59:00,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:59:00,411 INFO L87 Difference]: Start difference. First operand 42997 states and 227356 transitions. Second operand 16 states. [2020-10-09 13:59:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:59:02,574 INFO L93 Difference]: Finished difference Result 134425 states and 621844 transitions. [2020-10-09 13:59:02,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:59:02,575 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:59:02,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:59:02,966 INFO L225 Difference]: With dead ends: 134425 [2020-10-09 13:59:02,966 INFO L226 Difference]: Without dead ends: 134379 [2020-10-09 13:59:02,966 INFO L673 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 [2020-10-09 13:59:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134379 states. [2020-10-09 13:59:05,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134379 to 42935. [2020-10-09 13:59:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42935 states. [2020-10-09 13:59:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42935 states to 42935 states and 226917 transitions. [2020-10-09 13:59:05,957 INFO L78 Accepts]: Start accepts. Automaton has 42935 states and 226917 transitions. Word has length 29 [2020-10-09 13:59:05,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:59:05,958 INFO L481 AbstractCegarLoop]: Abstraction has 42935 states and 226917 transitions. [2020-10-09 13:59:05,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:59:05,958 INFO L276 IsEmpty]: Start isEmpty. Operand 42935 states and 226917 transitions. [2020-10-09 13:59:05,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:59:05,966 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:59:05,966 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:59:06,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:59:06,167 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]=== [2020-10-09 13:59:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:59:06,167 INFO L82 PathProgramCache]: Analyzing trace with hash -745713589, now seen corresponding path program 2 times [2020-10-09 13:59:06,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:59:06,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004284294] [2020-10-09 13:59:06,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:59:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:59:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-09 13:59:06,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004284294] [2020-10-09 13:59:06,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854333450] [2020-10-09 13:59:06,248 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 [2020-10-09 13:59:06,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:59:06,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:59:06,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:59:06,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:59:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-09 13:59:06,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:59:06,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:59:06,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847728291] [2020-10-09 13:59:06,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:59:06,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:59:06,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:59:06,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:59:06,477 INFO L87 Difference]: Start difference. First operand 42935 states and 226917 transitions. Second operand 16 states. [2020-10-09 13:59:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:59:08,464 INFO L93 Difference]: Finished difference Result 135137 states and 625997 transitions. [2020-10-09 13:59:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:59:08,465 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:59:08,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:59:09,635 INFO L225 Difference]: With dead ends: 135137 [2020-10-09 13:59:09,635 INFO L226 Difference]: Without dead ends: 135087 [2020-10-09 13:59:09,635 INFO L673 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 [2020-10-09 13:59:10,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135087 states. [2020-10-09 13:59:12,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135087 to 42336. [2020-10-09 13:59:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42336 states. [2020-10-09 13:59:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42336 states to 42336 states and 223739 transitions. [2020-10-09 13:59:12,514 INFO L78 Accepts]: Start accepts. Automaton has 42336 states and 223739 transitions. Word has length 29 [2020-10-09 13:59:12,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:59:12,514 INFO L481 AbstractCegarLoop]: Abstraction has 42336 states and 223739 transitions. [2020-10-09 13:59:12,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:59:12,515 INFO L276 IsEmpty]: Start isEmpty. Operand 42336 states and 223739 transitions. [2020-10-09 13:59:12,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:59:12,523 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:59:12,523 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:59:12,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2020-10-09 13:59:12,729 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]=== [2020-10-09 13:59:12,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:59:12,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1865067275, now seen corresponding path program 3 times [2020-10-09 13:59:12,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:59:12,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704692375] [2020-10-09 13:59:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:59:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:59:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:59:12,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704692375] [2020-10-09 13:59:12,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34529337] [2020-10-09 13:59:12,813 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 [2020-10-09 13:59:12,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 13:59:12,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:59:12,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:59:12,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:59:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:59:13,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:59:13,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:59:13,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947099600] [2020-10-09 13:59:13,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:59:13,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:59:13,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:59:13,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:59:13,042 INFO L87 Difference]: Start difference. First operand 42336 states and 223739 transitions. Second operand 16 states. [2020-10-09 13:59:15,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:59:15,013 INFO L93 Difference]: Finished difference Result 136349 states and 630987 transitions. [2020-10-09 13:59:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:59:15,014 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:59:15,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:59:15,415 INFO L225 Difference]: With dead ends: 136349 [2020-10-09 13:59:15,415 INFO L226 Difference]: Without dead ends: 136305 [2020-10-09 13:59:15,415 INFO L673 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 [2020-10-09 13:59:16,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136305 states. [2020-10-09 13:59:18,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136305 to 42186. [2020-10-09 13:59:18,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42186 states. [2020-10-09 13:59:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42186 states to 42186 states and 222832 transitions. [2020-10-09 13:59:19,537 INFO L78 Accepts]: Start accepts. Automaton has 42186 states and 222832 transitions. Word has length 29 [2020-10-09 13:59:19,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:59:19,537 INFO L481 AbstractCegarLoop]: Abstraction has 42186 states and 222832 transitions. [2020-10-09 13:59:19,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:59:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 42186 states and 222832 transitions. [2020-10-09 13:59:19,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:59:19,546 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:59:19,546 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:59:19,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-09 13:59:19,747 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]=== [2020-10-09 13:59:19,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:59:19,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2041985324, now seen corresponding path program 3 times [2020-10-09 13:59:19,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:59:19,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222568927] [2020-10-09 13:59:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:59:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:59:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:59:19,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222568927] [2020-10-09 13:59:19,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294236859] [2020-10-09 13:59:19,830 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 [2020-10-09 13:59:19,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 13:59:19,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:59:19,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:59:19,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:59:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:59:20,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:59:20,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:59:20,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540472695] [2020-10-09 13:59:20,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:59:20,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:59:20,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:59:20,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:59:20,059 INFO L87 Difference]: Start difference. First operand 42186 states and 222832 transitions. Second operand 16 states. [2020-10-09 13:59:22,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:59:22,311 INFO L93 Difference]: Finished difference Result 135812 states and 628090 transitions. [2020-10-09 13:59:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:59:22,312 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:59:22,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:59:22,716 INFO L225 Difference]: With dead ends: 135812 [2020-10-09 13:59:22,716 INFO L226 Difference]: Without dead ends: 135768 [2020-10-09 13:59:22,717 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-09 13:59:24,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135768 states. [2020-10-09 13:59:25,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135768 to 42079. [2020-10-09 13:59:25,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42079 states. [2020-10-09 13:59:25,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42079 states to 42079 states and 222233 transitions. [2020-10-09 13:59:25,725 INFO L78 Accepts]: Start accepts. Automaton has 42079 states and 222233 transitions. Word has length 29 [2020-10-09 13:59:25,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:59:25,725 INFO L481 AbstractCegarLoop]: Abstraction has 42079 states and 222233 transitions. [2020-10-09 13:59:25,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:59:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 42079 states and 222233 transitions. [2020-10-09 13:59:25,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:59:25,733 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:59:25,734 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:59:25,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:59:25,934 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]=== [2020-10-09 13:59:25,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:59:25,935 INFO L82 PathProgramCache]: Analyzing trace with hash -656591999, now seen corresponding path program 1 times [2020-10-09 13:59:25,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:59:25,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998263036] [2020-10-09 13:59:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:59:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:59:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:59:26,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998263036] [2020-10-09 13:59:26,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483721243] [2020-10-09 13:59:26,020 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 [2020-10-09 13:59:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:59:26,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:59:26,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:59:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-09 13:59:26,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:59:26,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:59:26,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543129361] [2020-10-09 13:59:26,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:59:26,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:59:26,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:59:26,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:59:26,248 INFO L87 Difference]: Start difference. First operand 42079 states and 222233 transitions. Second operand 16 states. [2020-10-09 13:59:28,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:59:28,326 INFO L93 Difference]: Finished difference Result 139249 states and 646209 transitions. [2020-10-09 13:59:28,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:59:28,327 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:59:28,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:59:28,747 INFO L225 Difference]: With dead ends: 139249 [2020-10-09 13:59:28,747 INFO L226 Difference]: Without dead ends: 139205 [2020-10-09 13:59:28,747 INFO L673 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 [2020-10-09 13:59:30,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139205 states. [2020-10-09 13:59:32,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139205 to 42066. [2020-10-09 13:59:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42066 states. [2020-10-09 13:59:32,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42066 states to 42066 states and 221912 transitions. [2020-10-09 13:59:32,421 INFO L78 Accepts]: Start accepts. Automaton has 42066 states and 221912 transitions. Word has length 29 [2020-10-09 13:59:32,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:59:32,421 INFO L481 AbstractCegarLoop]: Abstraction has 42066 states and 221912 transitions. [2020-10-09 13:59:32,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:59:32,421 INFO L276 IsEmpty]: Start isEmpty. Operand 42066 states and 221912 transitions. [2020-10-09 13:59:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:59:32,430 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:59:32,430 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:59:32,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:59:32,631 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]=== [2020-10-09 13:59:32,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:59:32,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1111601269, now seen corresponding path program 4 times [2020-10-09 13:59:32,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:59:32,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222360150] [2020-10-09 13:59:32,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:59:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:59:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:59:32,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222360150] [2020-10-09 13:59:32,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793579063] [2020-10-09 13:59:32,713 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 [2020-10-09 13:59:32,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:59:32,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:59:32,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:59:32,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:59:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:59:32,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:59:32,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:59:32,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794224221] [2020-10-09 13:59:32,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:59:32,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:59:32,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:59:32,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:59:32,956 INFO L87 Difference]: Start difference. First operand 42066 states and 221912 transitions. Second operand 16 states. [2020-10-09 13:59:35,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:59:35,045 INFO L93 Difference]: Finished difference Result 136710 states and 632229 transitions. [2020-10-09 13:59:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:59:35,046 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:59:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:59:35,467 INFO L225 Difference]: With dead ends: 136710 [2020-10-09 13:59:35,467 INFO L226 Difference]: Without dead ends: 136660 [2020-10-09 13:59:35,468 INFO L673 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 [2020-10-09 13:59:36,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136660 states. [2020-10-09 13:59:38,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136660 to 42207. [2020-10-09 13:59:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42207 states. [2020-10-09 13:59:38,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42207 states to 42207 states and 222579 transitions. [2020-10-09 13:59:38,520 INFO L78 Accepts]: Start accepts. Automaton has 42207 states and 222579 transitions. Word has length 29 [2020-10-09 13:59:38,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:59:38,520 INFO L481 AbstractCegarLoop]: Abstraction has 42207 states and 222579 transitions. [2020-10-09 13:59:38,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:59:38,520 INFO L276 IsEmpty]: Start isEmpty. Operand 42207 states and 222579 transitions. [2020-10-09 13:59:38,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:59:38,529 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:59:38,529 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:59:38,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 13:59:38,730 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]=== [2020-10-09 13:59:38,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:59:38,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1111629076, now seen corresponding path program 4 times [2020-10-09 13:59:38,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:59:38,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672221454] [2020-10-09 13:59:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:59:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:59:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:59:38,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672221454] [2020-10-09 13:59:38,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648964265] [2020-10-09 13:59:38,812 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 [2020-10-09 13:59:38,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 13:59:38,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:59:38,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:59:38,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:59:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:59:39,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:59:39,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:59:39,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284917263] [2020-10-09 13:59:39,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:59:39,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:59:39,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:59:39,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:59:39,062 INFO L87 Difference]: Start difference. First operand 42207 states and 222579 transitions. Second operand 16 states. [2020-10-09 13:59:41,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:59:41,614 INFO L93 Difference]: Finished difference Result 135625 states and 627192 transitions. [2020-10-09 13:59:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:59:41,615 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:59:41,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:59:42,066 INFO L225 Difference]: With dead ends: 135625 [2020-10-09 13:59:42,067 INFO L226 Difference]: Without dead ends: 135575 [2020-10-09 13:59:42,067 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-09 13:59:43,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135575 states. [2020-10-09 13:59:44,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135575 to 42083. [2020-10-09 13:59:44,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42083 states. [2020-10-09 13:59:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42083 states to 42083 states and 221863 transitions. [2020-10-09 13:59:45,079 INFO L78 Accepts]: Start accepts. Automaton has 42083 states and 221863 transitions. Word has length 29 [2020-10-09 13:59:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:59:45,079 INFO L481 AbstractCegarLoop]: Abstraction has 42083 states and 221863 transitions. [2020-10-09 13:59:45,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:59:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand 42083 states and 221863 transitions. [2020-10-09 13:59:45,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:59:45,088 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:59:45,088 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:59:45,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-09 13:59:45,295 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]=== [2020-10-09 13:59:45,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:59:45,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1111608709, now seen corresponding path program 2 times [2020-10-09 13:59:45,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:59:45,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233861855] [2020-10-09 13:59:45,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:59:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:59:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:59:45,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233861855] [2020-10-09 13:59:45,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963427582] [2020-10-09 13:59:45,383 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 [2020-10-09 13:59:45,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 13:59:45,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:59:45,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:59:45,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:59:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-09 13:59:45,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:59:45,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:59:45,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528678980] [2020-10-09 13:59:45,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:59:45,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:59:45,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:59:45,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:59:45,613 INFO L87 Difference]: Start difference. First operand 42083 states and 221863 transitions. Second operand 16 states. [2020-10-09 13:59:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:59:47,915 INFO L93 Difference]: Finished difference Result 135171 states and 626620 transitions. [2020-10-09 13:59:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:59:47,916 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:59:47,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:59:48,326 INFO L225 Difference]: With dead ends: 135171 [2020-10-09 13:59:48,326 INFO L226 Difference]: Without dead ends: 135112 [2020-10-09 13:59:48,326 INFO L673 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 [2020-10-09 13:59:49,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135112 states. [2020-10-09 13:59:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135112 to 41353. [2020-10-09 13:59:51,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41353 states. [2020-10-09 13:59:52,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41353 states to 41353 states and 218067 transitions. [2020-10-09 13:59:52,130 INFO L78 Accepts]: Start accepts. Automaton has 41353 states and 218067 transitions. Word has length 29 [2020-10-09 13:59:52,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:59:52,131 INFO L481 AbstractCegarLoop]: Abstraction has 41353 states and 218067 transitions. [2020-10-09 13:59:52,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:59:52,131 INFO L276 IsEmpty]: Start isEmpty. Operand 41353 states and 218067 transitions. [2020-10-09 13:59:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:59:52,143 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:59:52,144 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:59:52,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-09 13:59:52,357 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]=== [2020-10-09 13:59:52,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:59:52,358 INFO L82 PathProgramCache]: Analyzing trace with hash 888585425, now seen corresponding path program 3 times [2020-10-09 13:59:52,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:59:52,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897989579] [2020-10-09 13:59:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:59:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:59:52,440 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:59:52,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897989579] [2020-10-09 13:59:52,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5816057] [2020-10-09 13:59:52,441 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 [2020-10-09 13:59:52,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 13:59:52,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:59:52,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:59:52,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:59:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:59:52,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:59:52,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:59:52,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147153963] [2020-10-09 13:59:52,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:59:52,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:59:52,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:59:52,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:59:52,688 INFO L87 Difference]: Start difference. First operand 41353 states and 218067 transitions. Second operand 16 states. [2020-10-09 13:59:54,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:59:54,883 INFO L93 Difference]: Finished difference Result 135561 states and 628000 transitions. [2020-10-09 13:59:54,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 13:59:54,884 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 13:59:54,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:59:55,303 INFO L225 Difference]: With dead ends: 135561 [2020-10-09 13:59:55,304 INFO L226 Difference]: Without dead ends: 135517 [2020-10-09 13:59:55,304 INFO L673 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 [2020-10-09 13:59:56,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135517 states. [2020-10-09 13:59:58,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135517 to 41345. [2020-10-09 13:59:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41345 states. [2020-10-09 13:59:58,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41345 states to 41345 states and 218006 transitions. [2020-10-09 13:59:58,333 INFO L78 Accepts]: Start accepts. Automaton has 41345 states and 218006 transitions. Word has length 29 [2020-10-09 13:59:58,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:59:58,334 INFO L481 AbstractCegarLoop]: Abstraction has 41345 states and 218006 transitions. [2020-10-09 13:59:58,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 13:59:58,334 INFO L276 IsEmpty]: Start isEmpty. Operand 41345 states and 218006 transitions. [2020-10-09 13:59:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 13:59:58,343 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:59:58,343 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:59:58,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-09 13:59:58,544 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]=== [2020-10-09 13:59:58,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:59:58,544 INFO L82 PathProgramCache]: Analyzing trace with hash 877622337, now seen corresponding path program 3 times [2020-10-09 13:59:58,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:59:58,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475898124] [2020-10-09 13:59:58,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:59:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:59:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:59:58,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475898124] [2020-10-09 13:59:58,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060390015] [2020-10-09 13:59:58,629 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 [2020-10-09 13:59:58,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 13:59:58,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 13:59:58,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 13:59:58,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 13:59:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 13:59:58,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 13:59:58,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 13:59:58,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947587874] [2020-10-09 13:59:58,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 13:59:58,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:59:58,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 13:59:58,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 13:59:58,856 INFO L87 Difference]: Start difference. First operand 41345 states and 218006 transitions. Second operand 16 states. [2020-10-09 14:00:01,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:00:01,110 INFO L93 Difference]: Finished difference Result 134714 states and 623609 transitions. [2020-10-09 14:00:01,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:00:01,111 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 14:00:01,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:00:01,516 INFO L225 Difference]: With dead ends: 134714 [2020-10-09 14:00:01,517 INFO L226 Difference]: Without dead ends: 134670 [2020-10-09 14:00:01,517 INFO L673 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 [2020-10-09 14:00:03,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134670 states. [2020-10-09 14:00:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134670 to 41247. [2020-10-09 14:00:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41247 states. [2020-10-09 14:00:05,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41247 states to 41247 states and 217534 transitions. [2020-10-09 14:00:05,063 INFO L78 Accepts]: Start accepts. Automaton has 41247 states and 217534 transitions. Word has length 29 [2020-10-09 14:00:05,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:00:05,063 INFO L481 AbstractCegarLoop]: Abstraction has 41247 states and 217534 transitions. [2020-10-09 14:00:05,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 14:00:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 41247 states and 217534 transitions. [2020-10-09 14:00:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:00:05,072 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:00:05,072 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:00:05,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-09 14:00:05,272 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]=== [2020-10-09 14:00:05,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:00:05,273 INFO L82 PathProgramCache]: Analyzing trace with hash 861862898, now seen corresponding path program 3 times [2020-10-09 14:00:05,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:00:05,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863933999] [2020-10-09 14:00:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:00:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:00:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 14:00:05,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863933999] [2020-10-09 14:00:05,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375216565] [2020-10-09 14:00:05,358 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 [2020-10-09 14:00:05,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 14:00:05,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:00:05,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:00:05,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:00:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 14:00:05,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:00:05,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 14:00:05,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047261058] [2020-10-09 14:00:05,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 14:00:05,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:00:05,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 14:00:05,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 14:00:05,627 INFO L87 Difference]: Start difference. First operand 41247 states and 217534 transitions. Second operand 16 states. [2020-10-09 14:00:07,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:00:07,939 INFO L93 Difference]: Finished difference Result 134144 states and 620566 transitions. [2020-10-09 14:00:07,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:00:07,940 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 14:00:07,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:00:08,334 INFO L225 Difference]: With dead ends: 134144 [2020-10-09 14:00:08,335 INFO L226 Difference]: Without dead ends: 134100 [2020-10-09 14:00:08,335 INFO L673 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 [2020-10-09 14:00:09,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134100 states. [2020-10-09 14:00:11,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134100 to 41026. [2020-10-09 14:00:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41026 states. [2020-10-09 14:00:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41026 states to 41026 states and 216444 transitions. [2020-10-09 14:00:11,206 INFO L78 Accepts]: Start accepts. Automaton has 41026 states and 216444 transitions. Word has length 29 [2020-10-09 14:00:11,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:00:11,206 INFO L481 AbstractCegarLoop]: Abstraction has 41026 states and 216444 transitions. [2020-10-09 14:00:11,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 14:00:11,206 INFO L276 IsEmpty]: Start isEmpty. Operand 41026 states and 216444 transitions. [2020-10-09 14:00:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:00:11,214 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:00:11,215 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:00:11,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-09 14:00:11,415 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]=== [2020-10-09 14:00:11,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:00:11,416 INFO L82 PathProgramCache]: Analyzing trace with hash 868378385, now seen corresponding path program 4 times [2020-10-09 14:00:11,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:00:11,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696866791] [2020-10-09 14:00:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:00:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:00:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 14:00:11,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696866791] [2020-10-09 14:00:11,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51469948] [2020-10-09 14:00:11,507 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 [2020-10-09 14:00:11,595 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 14:00:11,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:00:11,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:00:11,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:00:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 14:00:11,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:00:11,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 14:00:11,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117701439] [2020-10-09 14:00:11,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 14:00:11,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:00:11,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 14:00:11,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 14:00:11,738 INFO L87 Difference]: Start difference. First operand 41026 states and 216444 transitions. Second operand 16 states. [2020-10-09 14:00:14,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:00:14,277 INFO L93 Difference]: Finished difference Result 136110 states and 630361 transitions. [2020-10-09 14:00:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:00:14,278 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 14:00:14,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:00:14,689 INFO L225 Difference]: With dead ends: 136110 [2020-10-09 14:00:14,689 INFO L226 Difference]: Without dead ends: 136051 [2020-10-09 14:00:14,690 INFO L673 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 [2020-10-09 14:00:15,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136051 states. [2020-10-09 14:00:17,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136051 to 41075. [2020-10-09 14:00:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41075 states. [2020-10-09 14:00:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41075 states to 41075 states and 216669 transitions. [2020-10-09 14:00:17,615 INFO L78 Accepts]: Start accepts. Automaton has 41075 states and 216669 transitions. Word has length 29 [2020-10-09 14:00:17,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:00:17,615 INFO L481 AbstractCegarLoop]: Abstraction has 41075 states and 216669 transitions. [2020-10-09 14:00:17,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 14:00:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 41075 states and 216669 transitions. [2020-10-09 14:00:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:00:17,624 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:00:17,624 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:00:17,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2020-10-09 14:00:17,825 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]=== [2020-10-09 14:00:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:00:17,825 INFO L82 PathProgramCache]: Analyzing trace with hash 868366977, now seen corresponding path program 4 times [2020-10-09 14:00:17,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:00:17,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549743543] [2020-10-09 14:00:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:00:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:00:17,910 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 14:00:17,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549743543] [2020-10-09 14:00:17,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382450379] [2020-10-09 14:00:17,911 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 [2020-10-09 14:00:18,001 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 14:00:18,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:00:18,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:00:18,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:00:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 14:00:18,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:00:18,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 14:00:18,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133215626] [2020-10-09 14:00:18,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 14:00:18,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:00:18,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 14:00:18,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 14:00:18,147 INFO L87 Difference]: Start difference. First operand 41075 states and 216669 transitions. Second operand 16 states. [2020-10-09 14:00:20,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:00:20,403 INFO L93 Difference]: Finished difference Result 134992 states and 625253 transitions. [2020-10-09 14:00:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:00:20,404 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 14:00:20,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:00:20,824 INFO L225 Difference]: With dead ends: 134992 [2020-10-09 14:00:20,824 INFO L226 Difference]: Without dead ends: 134933 [2020-10-09 14:00:20,824 INFO L673 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 [2020-10-09 14:00:22,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134933 states. [2020-10-09 14:00:24,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134933 to 40832. [2020-10-09 14:00:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40832 states. [2020-10-09 14:00:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40832 states to 40832 states and 215375 transitions. [2020-10-09 14:00:24,629 INFO L78 Accepts]: Start accepts. Automaton has 40832 states and 215375 transitions. Word has length 29 [2020-10-09 14:00:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:00:24,630 INFO L481 AbstractCegarLoop]: Abstraction has 40832 states and 215375 transitions. [2020-10-09 14:00:24,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 14:00:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 40832 states and 215375 transitions. [2020-10-09 14:00:24,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:00:24,638 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:00:24,638 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:00:24,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:00:24,845 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]=== [2020-10-09 14:00:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:00:24,845 INFO L82 PathProgramCache]: Analyzing trace with hash 868350578, now seen corresponding path program 4 times [2020-10-09 14:00:24,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:00:24,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59096180] [2020-10-09 14:00:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:00:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:00:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 14:00:24,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59096180] [2020-10-09 14:00:24,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074822119] [2020-10-09 14:00:24,929 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 [2020-10-09 14:00:25,015 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 14:00:25,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:00:25,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:00:25,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:00:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-09 14:00:25,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:00:25,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 14:00:25,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355674305] [2020-10-09 14:00:25,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 14:00:25,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:00:25,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 14:00:25,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-09 14:00:25,160 INFO L87 Difference]: Start difference. First operand 40832 states and 215375 transitions. Second operand 16 states. [2020-10-09 14:00:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:00:27,403 INFO L93 Difference]: Finished difference Result 133675 states and 619010 transitions. [2020-10-09 14:00:27,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:00:27,404 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-09 14:00:27,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:00:27,799 INFO L225 Difference]: With dead ends: 133675 [2020-10-09 14:00:27,800 INFO L226 Difference]: Without dead ends: 133616 [2020-10-09 14:00:27,800 INFO L673 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 [2020-10-09 14:00:29,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133616 states. [2020-10-09 14:00:30,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133616 to 40130. [2020-10-09 14:00:30,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40130 states. [2020-10-09 14:00:30,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40130 states to 40130 states and 211659 transitions. [2020-10-09 14:00:30,791 INFO L78 Accepts]: Start accepts. Automaton has 40130 states and 211659 transitions. Word has length 29 [2020-10-09 14:00:30,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:00:30,791 INFO L481 AbstractCegarLoop]: Abstraction has 40130 states and 211659 transitions. [2020-10-09 14:00:30,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 14:00:30,791 INFO L276 IsEmpty]: Start isEmpty. Operand 40130 states and 211659 transitions. [2020-10-09 14:00:30,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:00:30,800 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:00:30,800 INFO L421 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:00:31,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:00:31,007 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]=== [2020-10-09 14:00:31,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:00:31,007 INFO L82 PathProgramCache]: Analyzing trace with hash 350641582, now seen corresponding path program 1 times [2020-10-09 14:00:31,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:00:31,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183301508] [2020-10-09 14:00:31,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:00:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:00:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-09 14:00:31,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183301508] [2020-10-09 14:00:31,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:00:31,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 14:00:31,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866895705] [2020-10-09 14:00:31,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 14:00:31,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:00:31,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 14:00:31,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 14:00:31,046 INFO L87 Difference]: Start difference. First operand 40130 states and 211659 transitions. Second operand 5 states. [2020-10-09 14:00:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:00:31,610 INFO L93 Difference]: Finished difference Result 67092 states and 345298 transitions. [2020-10-09 14:00:31,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 14:00:31,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-09 14:00:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:00:31,819 INFO L225 Difference]: With dead ends: 67092 [2020-10-09 14:00:31,819 INFO L226 Difference]: Without dead ends: 67028 [2020-10-09 14:00:31,819 INFO L673 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 [2020-10-09 14:00:32,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67028 states. [2020-10-09 14:00:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67028 to 49403. [2020-10-09 14:00:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49403 states. [2020-10-09 14:00:34,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49403 states to 49403 states and 260758 transitions. [2020-10-09 14:00:34,554 INFO L78 Accepts]: Start accepts. Automaton has 49403 states and 260758 transitions. Word has length 29 [2020-10-09 14:00:34,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:00:34,554 INFO L481 AbstractCegarLoop]: Abstraction has 49403 states and 260758 transitions. [2020-10-09 14:00:34,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 14:00:34,554 INFO L276 IsEmpty]: Start isEmpty. Operand 49403 states and 260758 transitions. [2020-10-09 14:00:34,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:00:34,563 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:00:34,563 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:00:34,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2020-10-09 14:00:34,563 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]=== [2020-10-09 14:00:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:00:34,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1691122699, now seen corresponding path program 5 times [2020-10-09 14:00:34,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:00:34,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203630221] [2020-10-09 14:00:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:00:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:00:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 14:00:34,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203630221] [2020-10-09 14:00:34,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:00:34,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 14:00:34,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808058546] [2020-10-09 14:00:34,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:00:34,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:00:34,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:00:34,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:00:34,644 INFO L87 Difference]: Start difference. First operand 49403 states and 260758 transitions. Second operand 9 states. [2020-10-09 14:00:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:00:36,688 INFO L93 Difference]: Finished difference Result 158544 states and 742820 transitions. [2020-10-09 14:00:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:00:36,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-09 14:00:36,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:00:37,194 INFO L225 Difference]: With dead ends: 158544 [2020-10-09 14:00:37,194 INFO L226 Difference]: Without dead ends: 158488 [2020-10-09 14:00:37,195 INFO L673 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 [2020-10-09 14:00:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158488 states. [2020-10-09 14:00:40,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158488 to 49281. [2020-10-09 14:00:40,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49281 states. [2020-10-09 14:00:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49281 states to 49281 states and 259845 transitions. [2020-10-09 14:00:40,739 INFO L78 Accepts]: Start accepts. Automaton has 49281 states and 259845 transitions. Word has length 29 [2020-10-09 14:00:40,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:00:40,740 INFO L481 AbstractCegarLoop]: Abstraction has 49281 states and 259845 transitions. [2020-10-09 14:00:40,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:00:40,740 INFO L276 IsEmpty]: Start isEmpty. Operand 49281 states and 259845 transitions. [2020-10-09 14:00:40,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:00:40,749 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:00:40,749 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:00:40,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2020-10-09 14:00:40,749 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]=== [2020-10-09 14:00:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:00:40,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1691106300, now seen corresponding path program 5 times [2020-10-09 14:00:40,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:00:40,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027593093] [2020-10-09 14:00:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:00:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:00:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 14:00:40,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027593093] [2020-10-09 14:00:40,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:00:40,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 14:00:40,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610040265] [2020-10-09 14:00:40,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:00:40,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:00:40,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:00:40,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:00:40,832 INFO L87 Difference]: Start difference. First operand 49281 states and 259845 transitions. Second operand 9 states. [2020-10-09 14:00:42,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:00:42,820 INFO L93 Difference]: Finished difference Result 156182 states and 731010 transitions. [2020-10-09 14:00:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:00:42,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-09 14:00:42,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:00:43,293 INFO L225 Difference]: With dead ends: 156182 [2020-10-09 14:00:43,293 INFO L226 Difference]: Without dead ends: 156126 [2020-10-09 14:00:43,293 INFO L673 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 [2020-10-09 14:00:45,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156126 states. [2020-10-09 14:00:47,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156126 to 48971. [2020-10-09 14:00:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48971 states. [2020-10-09 14:00:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48971 states to 48971 states and 257988 transitions. [2020-10-09 14:00:47,464 INFO L78 Accepts]: Start accepts. Automaton has 48971 states and 257988 transitions. Word has length 29 [2020-10-09 14:00:47,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:00:47,464 INFO L481 AbstractCegarLoop]: Abstraction has 48971 states and 257988 transitions. [2020-10-09 14:00:47,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:00:47,464 INFO L276 IsEmpty]: Start isEmpty. Operand 48971 states and 257988 transitions. [2020-10-09 14:00:47,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:00:47,473 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:00:47,473 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:00:47,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2020-10-09 14:00:47,473 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]=== [2020-10-09 14:00:47,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:00:47,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1691126667, now seen corresponding path program 5 times [2020-10-09 14:00:47,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:00:47,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581200215] [2020-10-09 14:00:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:00:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:00:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 14:00:47,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581200215] [2020-10-09 14:00:47,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:00:47,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 14:00:47,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195310136] [2020-10-09 14:00:47,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:00:47,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:00:47,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:00:47,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:00:47,558 INFO L87 Difference]: Start difference. First operand 48971 states and 257988 transitions. Second operand 9 states. [2020-10-09 14:00:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:00:49,537 INFO L93 Difference]: Finished difference Result 153730 states and 719178 transitions. [2020-10-09 14:00:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:00:49,538 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-09 14:00:49,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:00:50,005 INFO L225 Difference]: With dead ends: 153730 [2020-10-09 14:00:50,005 INFO L226 Difference]: Without dead ends: 153674 [2020-10-09 14:00:50,005 INFO L673 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 [2020-10-09 14:00:51,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153674 states. [2020-10-09 14:00:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153674 to 48427. [2020-10-09 14:00:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48427 states. [2020-10-09 14:00:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48427 states to 48427 states and 254935 transitions. [2020-10-09 14:00:53,369 INFO L78 Accepts]: Start accepts. Automaton has 48427 states and 254935 transitions. Word has length 29 [2020-10-09 14:00:53,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:00:53,370 INFO L481 AbstractCegarLoop]: Abstraction has 48427 states and 254935 transitions. [2020-10-09 14:00:53,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:00:53,370 INFO L276 IsEmpty]: Start isEmpty. Operand 48427 states and 254935 transitions. [2020-10-09 14:00:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:00:53,378 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:00:53,378 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:00:53,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2020-10-09 14:00:53,378 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]=== [2020-10-09 14:00:53,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:00:53,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1680171019, now seen corresponding path program 6 times [2020-10-09 14:00:53,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:00:53,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50532423] [2020-10-09 14:00:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:00:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:00:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 14:00:54,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50532423] [2020-10-09 14:00:54,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:00:54,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 14:00:54,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524472486] [2020-10-09 14:00:54,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:00:54,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:00:54,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:00:54,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:00:54,187 INFO L87 Difference]: Start difference. First operand 48427 states and 254935 transitions. Second operand 9 states. [2020-10-09 14:00:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:00:56,257 INFO L93 Difference]: Finished difference Result 153132 states and 715258 transitions. [2020-10-09 14:00:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:00:56,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-09 14:00:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:00:56,738 INFO L225 Difference]: With dead ends: 153132 [2020-10-09 14:00:56,739 INFO L226 Difference]: Without dead ends: 153061 [2020-10-09 14:00:56,739 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-09 14:00:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153061 states. [2020-10-09 14:01:00,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153061 to 47511. [2020-10-09 14:01:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47511 states. [2020-10-09 14:01:00,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47511 states to 47511 states and 249853 transitions. [2020-10-09 14:01:00,194 INFO L78 Accepts]: Start accepts. Automaton has 47511 states and 249853 transitions. Word has length 29 [2020-10-09 14:01:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:00,194 INFO L481 AbstractCegarLoop]: Abstraction has 47511 states and 249853 transitions. [2020-10-09 14:01:00,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:01:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 47511 states and 249853 transitions. [2020-10-09 14:01:00,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:01:00,202 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:00,202 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:00,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2020-10-09 14:01:00,202 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]=== [2020-10-09 14:01:00,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:00,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1680143212, now seen corresponding path program 5 times [2020-10-09 14:01:00,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:00,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499313123] [2020-10-09 14:01:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 14:01:00,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499313123] [2020-10-09 14:01:00,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:00,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 14:01:00,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551326139] [2020-10-09 14:01:00,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:01:00,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:00,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:01:00,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:01:00,284 INFO L87 Difference]: Start difference. First operand 47511 states and 249853 transitions. Second operand 9 states. [2020-10-09 14:01:02,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:02,412 INFO L93 Difference]: Finished difference Result 152943 states and 713344 transitions. [2020-10-09 14:01:02,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:01:02,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-09 14:01:02,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:02,895 INFO L225 Difference]: With dead ends: 152943 [2020-10-09 14:01:02,895 INFO L226 Difference]: Without dead ends: 152887 [2020-10-09 14:01:02,895 INFO L673 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 [2020-10-09 14:01:04,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152887 states. [2020-10-09 14:01:06,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152887 to 47324. [2020-10-09 14:01:06,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47324 states. [2020-10-09 14:01:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47324 states to 47324 states and 248753 transitions. [2020-10-09 14:01:07,120 INFO L78 Accepts]: Start accepts. Automaton has 47324 states and 248753 transitions. Word has length 29 [2020-10-09 14:01:07,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:07,121 INFO L481 AbstractCegarLoop]: Abstraction has 47324 states and 248753 transitions. [2020-10-09 14:01:07,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:01:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 47324 states and 248753 transitions. [2020-10-09 14:01:07,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:01:07,129 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:07,129 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:07,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2020-10-09 14:01:07,129 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]=== [2020-10-09 14:01:07,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:07,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1680163579, now seen corresponding path program 5 times [2020-10-09 14:01:07,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:07,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989703293] [2020-10-09 14:01:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 14:01:07,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989703293] [2020-10-09 14:01:07,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:07,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 14:01:07,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489187197] [2020-10-09 14:01:07,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:01:07,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:07,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:01:07,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:01:07,214 INFO L87 Difference]: Start difference. First operand 47324 states and 248753 transitions. Second operand 9 states. [2020-10-09 14:01:09,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:09,317 INFO L93 Difference]: Finished difference Result 150780 states and 703178 transitions. [2020-10-09 14:01:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:01:09,318 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-09 14:01:09,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:09,780 INFO L225 Difference]: With dead ends: 150780 [2020-10-09 14:01:09,780 INFO L226 Difference]: Without dead ends: 150724 [2020-10-09 14:01:09,781 INFO L673 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 [2020-10-09 14:01:11,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150724 states. [2020-10-09 14:01:13,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150724 to 46868. [2020-10-09 14:01:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46868 states. [2020-10-09 14:01:13,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46868 states to 46868 states and 246275 transitions. [2020-10-09 14:01:13,176 INFO L78 Accepts]: Start accepts. Automaton has 46868 states and 246275 transitions. Word has length 29 [2020-10-09 14:01:13,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:13,176 INFO L481 AbstractCegarLoop]: Abstraction has 46868 states and 246275 transitions. [2020-10-09 14:01:13,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:01:13,176 INFO L276 IsEmpty]: Start isEmpty. Operand 46868 states and 246275 transitions. [2020-10-09 14:01:13,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:01:13,185 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:13,185 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:13,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2020-10-09 14:01:13,185 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]=== [2020-10-09 14:01:13,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:13,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1664411580, now seen corresponding path program 6 times [2020-10-09 14:01:13,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:13,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496859938] [2020-10-09 14:01:13,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 14:01:13,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496859938] [2020-10-09 14:01:13,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:13,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 14:01:13,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424407649] [2020-10-09 14:01:13,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:01:13,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:13,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:01:13,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:01:13,272 INFO L87 Difference]: Start difference. First operand 46868 states and 246275 transitions. Second operand 9 states. [2020-10-09 14:01:16,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:16,002 INFO L93 Difference]: Finished difference Result 150331 states and 700262 transitions. [2020-10-09 14:01:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:01:16,003 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-09 14:01:16,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:16,449 INFO L225 Difference]: With dead ends: 150331 [2020-10-09 14:01:16,449 INFO L226 Difference]: Without dead ends: 150260 [2020-10-09 14:01:16,449 INFO L673 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 [2020-10-09 14:01:17,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150260 states. [2020-10-09 14:01:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150260 to 46219. [2020-10-09 14:01:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46219 states. [2020-10-09 14:01:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46219 states to 46219 states and 242740 transitions. [2020-10-09 14:01:19,832 INFO L78 Accepts]: Start accepts. Automaton has 46219 states and 242740 transitions. Word has length 29 [2020-10-09 14:01:19,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:19,833 INFO L481 AbstractCegarLoop]: Abstraction has 46219 states and 242740 transitions. [2020-10-09 14:01:19,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:01:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 46219 states and 242740 transitions. [2020-10-09 14:01:19,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:01:19,841 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:19,842 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:19,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2020-10-09 14:01:19,842 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]=== [2020-10-09 14:01:19,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:19,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1664400172, now seen corresponding path program 6 times [2020-10-09 14:01:19,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:19,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217211531] [2020-10-09 14:01:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 14:01:19,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217211531] [2020-10-09 14:01:19,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:19,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 14:01:19,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616770692] [2020-10-09 14:01:19,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:01:19,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:19,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:01:19,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:01:19,931 INFO L87 Difference]: Start difference. First operand 46219 states and 242740 transitions. Second operand 9 states. [2020-10-09 14:01:22,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:22,017 INFO L93 Difference]: Finished difference Result 148950 states and 693501 transitions. [2020-10-09 14:01:22,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:01:22,018 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-09 14:01:22,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:22,488 INFO L225 Difference]: With dead ends: 148950 [2020-10-09 14:01:22,488 INFO L226 Difference]: Without dead ends: 148879 [2020-10-09 14:01:22,488 INFO L673 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 [2020-10-09 14:01:23,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148879 states. [2020-10-09 14:01:26,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148879 to 45332. [2020-10-09 14:01:26,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45332 states. [2020-10-09 14:01:26,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45332 states to 45332 states and 238000 transitions. [2020-10-09 14:01:26,974 INFO L78 Accepts]: Start accepts. Automaton has 45332 states and 238000 transitions. Word has length 29 [2020-10-09 14:01:26,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:26,974 INFO L481 AbstractCegarLoop]: Abstraction has 45332 states and 238000 transitions. [2020-10-09 14:01:26,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:01:26,974 INFO L276 IsEmpty]: Start isEmpty. Operand 45332 states and 238000 transitions. [2020-10-09 14:01:26,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:01:26,983 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:26,983 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:26,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2020-10-09 14:01:26,983 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]=== [2020-10-09 14:01:26,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:26,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1664404140, now seen corresponding path program 5 times [2020-10-09 14:01:26,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:26,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605766482] [2020-10-09 14:01:26,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 14:01:27,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605766482] [2020-10-09 14:01:27,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:27,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 14:01:27,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99370532] [2020-10-09 14:01:27,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:01:27,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:27,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:01:27,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:01:27,070 INFO L87 Difference]: Start difference. First operand 45332 states and 238000 transitions. Second operand 9 states. [2020-10-09 14:01:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:29,025 INFO L93 Difference]: Finished difference Result 148687 states and 692117 transitions. [2020-10-09 14:01:29,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:01:29,026 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-09 14:01:29,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:29,460 INFO L225 Difference]: With dead ends: 148687 [2020-10-09 14:01:29,460 INFO L226 Difference]: Without dead ends: 148631 [2020-10-09 14:01:29,460 INFO L673 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 [2020-10-09 14:01:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148631 states. [2020-10-09 14:01:32,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148631 to 45016. [2020-10-09 14:01:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45016 states. [2020-10-09 14:01:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45016 states to 45016 states and 236327 transitions. [2020-10-09 14:01:32,726 INFO L78 Accepts]: Start accepts. Automaton has 45016 states and 236327 transitions. Word has length 29 [2020-10-09 14:01:32,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:32,727 INFO L481 AbstractCegarLoop]: Abstraction has 45016 states and 236327 transitions. [2020-10-09 14:01:32,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:01:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 45016 states and 236327 transitions. [2020-10-09 14:01:32,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:01:32,735 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:32,735 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:32,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2020-10-09 14:01:32,735 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]=== [2020-10-09 14:01:32,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:32,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1683984267, now seen corresponding path program 6 times [2020-10-09 14:01:32,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:32,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800436454] [2020-10-09 14:01:32,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:32,812 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 14:01:32,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800436454] [2020-10-09 14:01:32,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:32,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 14:01:32,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343787662] [2020-10-09 14:01:32,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:01:32,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:32,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:01:32,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:01:32,814 INFO L87 Difference]: Start difference. First operand 45016 states and 236327 transitions. Second operand 9 states. [2020-10-09 14:01:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:34,762 INFO L93 Difference]: Finished difference Result 147978 states and 688634 transitions. [2020-10-09 14:01:34,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:01:34,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-09 14:01:34,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:35,193 INFO L225 Difference]: With dead ends: 147978 [2020-10-09 14:01:35,193 INFO L226 Difference]: Without dead ends: 147907 [2020-10-09 14:01:35,193 INFO L673 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 [2020-10-09 14:01:37,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147907 states. [2020-10-09 14:01:38,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147907 to 44547. [2020-10-09 14:01:38,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44547 states. [2020-10-09 14:01:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44547 states to 44547 states and 233827 transitions. [2020-10-09 14:01:39,017 INFO L78 Accepts]: Start accepts. Automaton has 44547 states and 233827 transitions. Word has length 29 [2020-10-09 14:01:39,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:39,017 INFO L481 AbstractCegarLoop]: Abstraction has 44547 states and 233827 transitions. [2020-10-09 14:01:39,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:01:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 44547 states and 233827 transitions. [2020-10-09 14:01:39,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:01:39,025 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:39,025 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:39,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2020-10-09 14:01:39,025 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]=== [2020-10-09 14:01:39,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:39,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1683972859, now seen corresponding path program 6 times [2020-10-09 14:01:39,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:39,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367697083] [2020-10-09 14:01:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 14:01:39,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367697083] [2020-10-09 14:01:39,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:39,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 14:01:39,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320229453] [2020-10-09 14:01:39,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:01:39,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:39,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:01:39,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:01:39,105 INFO L87 Difference]: Start difference. First operand 44547 states and 233827 transitions. Second operand 9 states. [2020-10-09 14:01:41,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:41,085 INFO L93 Difference]: Finished difference Result 146514 states and 681741 transitions. [2020-10-09 14:01:41,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:01:41,087 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-09 14:01:41,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:41,530 INFO L225 Difference]: With dead ends: 146514 [2020-10-09 14:01:41,530 INFO L226 Difference]: Without dead ends: 146443 [2020-10-09 14:01:41,530 INFO L673 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 [2020-10-09 14:01:42,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146443 states. [2020-10-09 14:01:44,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146443 to 43886. [2020-10-09 14:01:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43886 states. [2020-10-09 14:01:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43886 states to 43886 states and 230374 transitions. [2020-10-09 14:01:44,817 INFO L78 Accepts]: Start accepts. Automaton has 43886 states and 230374 transitions. Word has length 29 [2020-10-09 14:01:44,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:44,817 INFO L481 AbstractCegarLoop]: Abstraction has 43886 states and 230374 transitions. [2020-10-09 14:01:44,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:01:44,817 INFO L276 IsEmpty]: Start isEmpty. Operand 43886 states and 230374 transitions. [2020-10-09 14:01:44,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-09 14:01:44,825 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:44,825 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:44,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2020-10-09 14:01:44,825 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]=== [2020-10-09 14:01:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:44,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1683956460, now seen corresponding path program 6 times [2020-10-09 14:01:44,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:44,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240187759] [2020-10-09 14:01:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-09 14:01:44,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240187759] [2020-10-09 14:01:44,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:44,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-09 14:01:44,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144018539] [2020-10-09 14:01:44,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:01:44,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:44,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:01:44,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:01:44,918 INFO L87 Difference]: Start difference. First operand 43886 states and 230374 transitions. Second operand 9 states. [2020-10-09 14:01:47,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:47,593 INFO L93 Difference]: Finished difference Result 145269 states and 675718 transitions. [2020-10-09 14:01:47,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 14:01:47,595 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-09 14:01:47,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:48,019 INFO L225 Difference]: With dead ends: 145269 [2020-10-09 14:01:48,019 INFO L226 Difference]: Without dead ends: 145198 [2020-10-09 14:01:48,019 INFO L673 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 [2020-10-09 14:01:49,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145198 states. [2020-10-09 14:01:50,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145198 to 42813. [2020-10-09 14:01:50,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42813 states. [2020-10-09 14:01:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42813 states to 42813 states and 224792 transitions. [2020-10-09 14:01:51,045 INFO L78 Accepts]: Start accepts. Automaton has 42813 states and 224792 transitions. Word has length 29 [2020-10-09 14:01:51,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:51,045 INFO L481 AbstractCegarLoop]: Abstraction has 42813 states and 224792 transitions. [2020-10-09 14:01:51,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:01:51,046 INFO L276 IsEmpty]: Start isEmpty. Operand 42813 states and 224792 transitions. [2020-10-09 14:01:51,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-09 14:01:51,055 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:51,055 INFO L421 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:51,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2020-10-09 14:01:51,055 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]=== [2020-10-09 14:01:51,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:51,056 INFO L82 PathProgramCache]: Analyzing trace with hash -2020768925, now seen corresponding path program 1 times [2020-10-09 14:01:51,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:51,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417715465] [2020-10-09 14:01:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 14:01:51,061 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 14:01:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 14:01:51,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 14:01:51,072 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-09 14:01:51,072 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 14:01:51,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2020-10-09 14:01:51,072 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-09 14:01:51,073 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-09 14:01:51,073 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-09 14:01:51,087 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,088 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,088 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,088 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,088 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,089 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,089 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,090 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,090 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,090 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,090 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,090 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,090 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,090 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,090 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,091 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,091 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,091 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,091 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,091 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,092 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,092 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,092 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,092 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,092 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,092 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,092 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,092 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,092 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,092 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,092 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,092 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,092 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,093 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,093 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,093 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,096 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,097 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,097 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,098 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,098 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,099 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,099 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,099 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,099 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,100 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,100 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,100 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,100 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,100 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,102 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,102 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,103 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,103 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,104 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,105 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,105 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,105 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,105 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,106 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,107 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,107 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,107 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,107 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,108 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,108 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,108 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,108 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,108 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,115 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,115 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,117 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,118 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,119 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,119 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,123 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:51,124 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-09 14:01:51,124 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 14:01:51,124 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 14:01:51,124 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 14:01:51,124 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 14:01:51,124 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 14:01:51,124 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 14:01:51,124 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 14:01:51,124 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 14:01:51,126 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 14:01:51,126 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 154 transitions, 462 flow [2020-10-09 14:01:51,127 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 154 transitions, 462 flow [2020-10-09 14:01:51,127 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 175 places, 154 transitions, 462 flow [2020-10-09 14:01:51,148 INFO L129 PetriNetUnfolder]: 10/194 cut-off events. [2020-10-09 14:01:51,148 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-09 14:01:51,149 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. [2020-10-09 14:01:51,155 INFO L117 LiptonReduction]: Number of co-enabled transitions 3460 [2020-10-09 14:01:54,256 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-09 14:01:54,727 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-09 14:01:54,896 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-09 14:01:55,122 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-09 14:01:55,235 INFO L132 LiptonReduction]: Checked pairs total: 6416 [2020-10-09 14:01:55,236 INFO L134 LiptonReduction]: Total number of compositions: 141 [2020-10-09 14:01:55,236 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 51 transitions, 256 flow [2020-10-09 14:02:06,426 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 55763 states. [2020-10-09 14:02:06,427 INFO L276 IsEmpty]: Start isEmpty. Operand 55763 states. [2020-10-09 14:02:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-09 14:02:06,427 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:06,427 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-09 14:02:06,427 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]=== [2020-10-09 14:02:06,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:06,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1607054, now seen corresponding path program 1 times [2020-10-09 14:02:06,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:06,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113113230] [2020-10-09 14:02:06,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:06,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113113230] [2020-10-09 14:02:06,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:02:06,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-09 14:02:06,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608406100] [2020-10-09 14:02:06,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 14:02:06,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:06,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 14:02:06,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 14:02:06,441 INFO L87 Difference]: Start difference. First operand 55763 states. Second operand 3 states. [2020-10-09 14:02:06,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:06,831 INFO L93 Difference]: Finished difference Result 54360 states and 318970 transitions. [2020-10-09 14:02:06,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 14:02:06,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-09 14:02:06,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:07,009 INFO L225 Difference]: With dead ends: 54360 [2020-10-09 14:02:07,009 INFO L226 Difference]: Without dead ends: 51079 [2020-10-09 14:02:07,009 INFO L673 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 [2020-10-09 14:02:10,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51079 states. [2020-10-09 14:02:11,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51079 to 51079. [2020-10-09 14:02:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51079 states. [2020-10-09 14:02:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51079 states to 51079 states and 298193 transitions. [2020-10-09 14:02:11,233 INFO L78 Accepts]: Start accepts. Automaton has 51079 states and 298193 transitions. Word has length 3 [2020-10-09 14:02:11,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:11,233 INFO L481 AbstractCegarLoop]: Abstraction has 51079 states and 298193 transitions. [2020-10-09 14:02:11,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 14:02:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 51079 states and 298193 transitions. [2020-10-09 14:02:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 14:02:11,234 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:11,234 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:11,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2020-10-09 14:02:11,234 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]=== [2020-10-09 14:02:11,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:11,234 INFO L82 PathProgramCache]: Analyzing trace with hash -993793982, now seen corresponding path program 1 times [2020-10-09 14:02:11,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:11,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972472327] [2020-10-09 14:02:11,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:11,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972472327] [2020-10-09 14:02:11,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:02:11,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 14:02:11,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297155136] [2020-10-09 14:02:11,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 14:02:11,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:11,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 14:02:11,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 14:02:11,271 INFO L87 Difference]: Start difference. First operand 51079 states and 298193 transitions. Second operand 5 states. [2020-10-09 14:02:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:12,017 INFO L93 Difference]: Finished difference Result 96937 states and 538177 transitions. [2020-10-09 14:02:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 14:02:12,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-09 14:02:12,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:12,348 INFO L225 Difference]: With dead ends: 96937 [2020-10-09 14:02:12,349 INFO L226 Difference]: Without dead ends: 96928 [2020-10-09 14:02:12,349 INFO L673 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 Received shutdown request... [2020-10-09 14:02:21,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96928 states. [2020-10-09 14:02:21,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2020-10-09 14:02:21,552 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-09 14:02:21,554 WARN L235 ceAbstractionStarter]: Timeout [2020-10-09 14:02:21,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 02:02:21 BasicIcfg [2020-10-09 14:02:21,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 14:02:21,555 INFO L168 Benchmark]: Toolchain (without parser) took 789606.25 ms. Allocated memory was 251.1 MB in the beginning and 5.9 GB in the end (delta: 5.7 GB). Free memory was 206.5 MB in the beginning and 3.7 GB in the end (delta: -3.5 GB). Peak memory consumption was 5.4 GB. Max. memory is 14.2 GB. [2020-10-09 14:02:21,555 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:02:21,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.00 ms. Allocated memory was 251.1 MB in the beginning and 314.6 MB in the end (delta: 63.4 MB). Free memory was 206.5 MB in the beginning and 269.9 MB in the end (delta: -63.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. [2020-10-09 14:02:21,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.27 ms. Allocated memory is still 314.6 MB. Free memory is still 269.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:02:21,556 INFO L168 Benchmark]: Boogie Preprocessor took 25.52 ms. Allocated memory is still 314.6 MB. Free memory was 269.9 MB in the beginning and 267.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 14:02:21,556 INFO L168 Benchmark]: RCFGBuilder took 419.60 ms. Allocated memory is still 314.6 MB. Free memory was 267.4 MB in the beginning and 247.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 14.2 GB. [2020-10-09 14:02:21,556 INFO L168 Benchmark]: TraceAbstraction took 788408.10 ms. Allocated memory was 314.6 MB in the beginning and 5.9 GB in the end (delta: 5.6 GB). Free memory was 245.3 MB in the beginning and 3.7 GB in the end (delta: -3.4 GB). Peak memory consumption was 5.4 GB. Max. memory is 14.2 GB. [2020-10-09 14:02:21,557 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 671.00 ms. Allocated memory was 251.1 MB in the beginning and 314.6 MB in the end (delta: 63.4 MB). Free memory was 206.5 MB in the beginning and 269.9 MB in the end (delta: -63.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 76.27 ms. Allocated memory is still 314.6 MB. Free memory is still 269.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.52 ms. Allocated memory is still 314.6 MB. Free memory was 269.9 MB in the beginning and 267.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 419.60 ms. Allocated memory is still 314.6 MB. Free memory was 267.4 MB in the beginning and 247.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 14.2 GB. * TraceAbstraction took 788408.10 ms. Allocated memory was 314.6 MB in the beginning and 5.9 GB in the end (delta: 5.6 GB). Free memory was 245.3 MB in the beginning and 3.7 GB in the end (delta: -3.4 GB). Peak memory consumption was 5.4 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 362 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 3 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 61 PlacesBefore, 18 PlacesAfterwards, 58 TransitionsBefore, 12 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 54 TotalNumberOfCompositions, 576 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 568 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 30 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 80 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 21 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 3 ConcurrentYvCompositions, 4 ChoiceCompositions, 66 TotalNumberOfCompositions, 1122 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 826 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 50 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 99 PlacesBefore, 41 PlacesAfterwards, 90 TransitionsBefore, 27 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 5 FixpointIterations, 39 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 3 ConcurrentYvCompositions, 5 ChoiceCompositions, 79 TotalNumberOfCompositions, 1841 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1012 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 52 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 118 PlacesBefore, 51 PlacesAfterwards, 106 TransitionsBefore, 33 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 92 TotalNumberOfCompositions, 2590 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1310 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 137 PlacesBefore, 61 PlacesAfterwards, 122 TransitionsBefore, 39 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 6 FixpointIterations, 61 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 3 ConcurrentYvCompositions, 7 ChoiceCompositions, 111 TotalNumberOfCompositions, 4038 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1797 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 125 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 156 PlacesBefore, 71 PlacesAfterwards, 138 TransitionsBefore, 45 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 5 FixpointIterations, 66 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 121 TotalNumberOfCompositions, 4694 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2227 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 203 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.1s, 175 PlacesBefore, 81 PlacesAfterwards, 154 TransitionsBefore, 51 TransitionsAfterwards, 3460 CoEnabledTransitionPairs, 6 FixpointIterations, 81 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 3 ConcurrentYvCompositions, 9 ChoiceCompositions, 141 TotalNumberOfCompositions, 6416 MoverChecksTotal - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 788.0s, OverallIterations: 189, TraceHistogramMax: 7, AutomataDifference: 319.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 29.6s, HoareTripleCheckerStatistics: 11740 SDtfs, 59742 SDslu, 53122 SDs, 0 SdLazy, 101246 SolverSat, 6177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7298 GetRequests, 1674 SyntacticMatches, 0 SemanticMatches, 5624 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70525 ImplicationChecksByTransitivity, 84.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55763occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 382.7s AutomataMinimizationTime, 183 MinimizatonAttempts, 10585668 StatesRemovedByMinimization, 174 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 24.1s InterpolantComputationTime, 6739 NumberOfCodeBlocks, 6627 NumberOfCodeBlocksAsserted, 370 NumberOfCheckSat, 6340 ConstructedInterpolants, 0 QuantifiedInterpolants, 991584 SizeOfPredicates, 584 NumberOfNonLiveVariables, 11752 ConjunctsInSsa, 878 ConjunctsInUnsatCore, 281 InterpolantComputations, 85 PerfectInterpolantSequences, 2834/5082 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown