/usr/bin/java -Xmx8000000000 -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 0.1.25-507b705 [2020-09-11 16:06:21,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 16:06:21,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 16:06:21,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 16:06:21,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 16:06:21,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 16:06:21,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 16:06:21,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 16:06:21,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 16:06:21,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 16:06:22,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 16:06:22,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 16:06:22,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 16:06:22,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 16:06:22,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 16:06:22,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 16:06:22,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 16:06:22,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 16:06:22,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 16:06:22,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 16:06:22,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 16:06:22,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 16:06:22,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 16:06:22,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 16:06:22,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 16:06:22,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 16:06:22,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 16:06:22,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 16:06:22,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 16:06:22,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 16:06:22,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 16:06:22,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 16:06:22,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 16:06:22,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 16:06:22,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 16:06:22,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 16:06:22,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 16:06:22,113 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 16:06:22,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 16:06:22,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 16:06:22,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 16:06:22,117 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 16:06:22,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 16:06:22,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 16:06:22,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 16:06:22,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 16:06:22,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 16:06:22,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 16:06:22,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 16:06:22,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 16:06:22,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 16:06:22,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 16:06:22,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 16:06:22,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 16:06:22,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 16:06:22,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 16:06:22,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 16:06:22,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 16:06:22,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 16:06:22,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 16:06:22,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 16:06:22,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 16:06:22,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 16:06:22,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 16:06:22,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 16:06:22,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 16:06:22,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 16:06:22,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 16:06:22,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 16:06:22,587 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 16:06:22,589 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 16:06:22,589 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 16:06:22,591 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-09-11 16:06:22,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074e39586/b323c8d417aa42139d220e53c4a5c051/FLAGe0f81212e [2020-09-11 16:06:23,292 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 16:06:23,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-09-11 16:06:23,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074e39586/b323c8d417aa42139d220e53c4a5c051/FLAGe0f81212e [2020-09-11 16:06:23,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074e39586/b323c8d417aa42139d220e53c4a5c051 [2020-09-11 16:06:23,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 16:06:23,595 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 16:06:23,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 16:06:23,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 16:06:23,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 16:06:23,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 04:06:23" (1/1) ... [2020-09-11 16:06:23,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca29605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:06:23, skipping insertion in model container [2020-09-11 16:06:23,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 04:06:23" (1/1) ... [2020-09-11 16:06:23,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 16:06:23,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 16:06:24,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 16:06:24,230 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 16:06:24,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 16:06:24,406 INFO L208 MainTranslator]: Completed translation [2020-09-11 16:06:24,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:06:24 WrapperNode [2020-09-11 16:06:24,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 16:06:24,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 16:06:24,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 16:06:24,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 16:06:24,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:06:24" (1/1) ... [2020-09-11 16:06:24,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:06:24" (1/1) ... [2020-09-11 16:06:24,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 16:06:24,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 16:06:24,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 16:06:24,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 16:06:24,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:06:24" (1/1) ... [2020-09-11 16:06:24,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:06:24" (1/1) ... [2020-09-11 16:06:24,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:06:24" (1/1) ... [2020-09-11 16:06:24,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:06:24" (1/1) ... [2020-09-11 16:06:24,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:06:24" (1/1) ... [2020-09-11 16:06:24,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:06:24" (1/1) ... [2020-09-11 16:06:24,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:06:24" (1/1) ... [2020-09-11 16:06:24,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 16:06:24,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 16:06:24,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 16:06:24,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 16:06:24,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:06:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:06:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-11 16:06:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-11 16:06:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-11 16:06:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-11 16:06:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 16:06:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 16:06:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 16:06:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 16:06:24,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 16:06:24,593 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 16:06:24,933 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 16:06:24,933 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-11 16:06:24,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 04:06:24 BoogieIcfgContainer [2020-09-11 16:06:24,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 16:06:24,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 16:06:24,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 16:06:24,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 16:06:24,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 04:06:23" (1/3) ... [2020-09-11 16:06:24,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1797008d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 04:06:24, skipping insertion in model container [2020-09-11 16:06:24,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:06:24" (2/3) ... [2020-09-11 16:06:24,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1797008d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 04:06:24, skipping insertion in model container [2020-09-11 16:06:24,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 04:06:24" (3/3) ... [2020-09-11 16:06:24,949 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2020-09-11 16:06:24,961 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 16:06:24,962 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 16:06:24,972 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 16:06:24,973 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 16:06:25,010 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,010 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,011 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,011 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,011 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,012 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,012 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,014 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,014 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,014 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,015 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,015 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,015 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,020 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,020 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,020 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,020 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,021 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:25,058 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 16:06:25,082 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 16:06:25,082 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 16:06:25,082 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 16:06:25,082 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 16:06:25,083 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 16:06:25,083 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 16:06:25,083 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 16:06:25,083 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 16:06:25,100 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-09-11 16:06:25,103 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-11 16:06:25,154 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-11 16:06:25,155 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 16:06:25,162 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. [2020-09-11 16:06:25,164 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-09-11 16:06:25,189 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-09-11 16:06:25,189 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 16:06:25,190 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. [2020-09-11 16:06:25,192 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 592 [2020-09-11 16:06:25,194 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 16:06:26,784 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-09-11 16:06:27,035 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-09-11 16:06:27,122 INFO L206 etLargeBlockEncoding]: Checked pairs total: 486 [2020-09-11 16:06:27,122 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2020-09-11 16:06:27,127 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-09-11 16:06:27,139 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-11 16:06:27,142 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-11 16:06:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 16:06:27,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:27,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 16:06:27,152 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:27,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:27,159 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-09-11 16:06:27,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:27,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573193119] [2020-09-11 16:06:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:27,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573193119] [2020-09-11 16:06:27,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:27,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 16:06:27,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94823128] [2020-09-11 16:06:27,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 16:06:27,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:27,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 16:06:27,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 16:06:27,398 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-11 16:06:27,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:27,444 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-09-11 16:06:27,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 16:06:27,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 16:06:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:27,459 INFO L225 Difference]: With dead ends: 35 [2020-09-11 16:06:27,459 INFO L226 Difference]: Without dead ends: 31 [2020-09-11 16:06:27,461 INFO L675 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 [2020-09-11 16:06:27,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-11 16:06:27,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-11 16:06:27,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-11 16:06:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-09-11 16:06:27,507 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-09-11 16:06:27,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:27,508 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-09-11 16:06:27,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 16:06:27,508 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-09-11 16:06:27,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-11 16:06:27,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:27,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:27,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 16:06:27,510 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:27,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:27,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-09-11 16:06:27,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:27,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231914067] [2020-09-11 16:06:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:27,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231914067] [2020-09-11 16:06:27,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:27,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 16:06:27,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596767461] [2020-09-11 16:06:27,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 16:06:27,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:27,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 16:06:27,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 16:06:27,612 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-09-11 16:06:27,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:27,640 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-09-11 16:06:27,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 16:06:27,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-11 16:06:27,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:27,642 INFO L225 Difference]: With dead ends: 26 [2020-09-11 16:06:27,642 INFO L226 Difference]: Without dead ends: 24 [2020-09-11 16:06:27,643 INFO L675 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 [2020-09-11 16:06:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-11 16:06:27,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-11 16:06:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-11 16:06:27,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-09-11 16:06:27,648 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-09-11 16:06:27,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:27,648 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-09-11 16:06:27,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 16:06:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-09-11 16:06:27,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 16:06:27,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:27,649 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:27,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 16:06:27,650 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:27,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:27,650 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-09-11 16:06:27,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:27,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060921634] [2020-09-11 16:06:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 16:06:27,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 16:06:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 16:06:27,701 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 16:06:27,729 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 16:06:27,729 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 16:06:27,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 16:06:27,730 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 16:06:27,731 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 16:06:27,731 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-11 16:06:27,741 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,742 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,743 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,743 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,743 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,745 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,745 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,750 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,750 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,755 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,755 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:27,763 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-11 16:06:27,763 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 16:06:27,764 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 16:06:27,764 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 16:06:27,764 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 16:06:27,764 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 16:06:27,764 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 16:06:27,764 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 16:06:27,764 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 16:06:27,767 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-09-11 16:06:27,767 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-11 16:06:27,787 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-11 16:06:27,788 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-11 16:06:27,793 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. [2020-09-11 16:06:27,795 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-09-11 16:06:27,826 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-09-11 16:06:27,828 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-11 16:06:27,830 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. [2020-09-11 16:06:27,836 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 920 [2020-09-11 16:06:27,837 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 16:06:29,335 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-09-11 16:06:29,615 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-11 16:06:29,790 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-11 16:06:29,796 INFO L206 etLargeBlockEncoding]: Checked pairs total: 942 [2020-09-11 16:06:29,796 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-11 16:06:29,797 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-09-11 16:06:29,808 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-09-11 16:06:29,809 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-09-11 16:06:29,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 16:06:29,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:29,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 16:06:29,810 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 16:06:29,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:29,810 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-09-11 16:06:29,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:29,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221795629] [2020-09-11 16:06:29,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:29,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221795629] [2020-09-11 16:06:29,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:29,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 16:06:29,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189224183] [2020-09-11 16:06:29,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 16:06:29,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:29,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 16:06:29,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 16:06:29,908 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-09-11 16:06:29,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:29,963 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-09-11 16:06:29,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 16:06:29,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 16:06:29,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:29,972 INFO L225 Difference]: With dead ends: 185 [2020-09-11 16:06:29,976 INFO L226 Difference]: Without dead ends: 171 [2020-09-11 16:06:29,976 INFO L675 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 [2020-09-11 16:06:29,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-11 16:06:30,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-11 16:06:30,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-11 16:06:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-09-11 16:06:30,010 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-09-11 16:06:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:30,010 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-09-11 16:06:30,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 16:06:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-09-11 16:06:30,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 16:06:30,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:30,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:30,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 16:06:30,012 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 16:06:30,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:30,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-09-11 16:06:30,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:30,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273685147] [2020-09-11 16:06:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:30,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273685147] [2020-09-11 16:06:30,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:30,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:06:30,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158284359] [2020-09-11 16:06:30,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:06:30,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:30,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:06:30,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:06:30,098 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-09-11 16:06:30,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:30,226 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-09-11 16:06:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:06:30,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 16:06:30,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:30,232 INFO L225 Difference]: With dead ends: 205 [2020-09-11 16:06:30,232 INFO L226 Difference]: Without dead ends: 201 [2020-09-11 16:06:30,233 INFO L675 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 [2020-09-11 16:06:30,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-11 16:06:30,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-09-11 16:06:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-11 16:06:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-09-11 16:06:30,253 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-09-11 16:06:30,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:30,253 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-09-11 16:06:30,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:06:30,254 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-09-11 16:06:30,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 16:06:30,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:30,255 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:30,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 16:06:30,256 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 16:06:30,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:30,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-09-11 16:06:30,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:30,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242449143] [2020-09-11 16:06:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:06:30,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242449143] [2020-09-11 16:06:30,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:30,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:06:30,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815054066] [2020-09-11 16:06:30,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:06:30,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:30,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:06:30,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:06:30,402 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-09-11 16:06:30,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:30,511 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-09-11 16:06:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:06:30,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 16:06:30,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:30,514 INFO L225 Difference]: With dead ends: 189 [2020-09-11 16:06:30,514 INFO L226 Difference]: Without dead ends: 185 [2020-09-11 16:06:30,515 INFO L675 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 [2020-09-11 16:06:30,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-11 16:06:30,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-09-11 16:06:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-11 16:06:30,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-09-11 16:06:30,528 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-09-11 16:06:30,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:30,530 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-09-11 16:06:30,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:06:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-09-11 16:06:30,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 16:06:30,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:30,533 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:30,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 16:06:30,534 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 16:06:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:30,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-09-11 16:06:30,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:30,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005024973] [2020-09-11 16:06:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 16:06:30,555 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 16:06:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 16:06:30,571 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 16:06:30,587 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 16:06:30,587 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 16:06:30,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 16:06:30,588 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 16:06:30,588 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 16:06:30,590 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-11 16:06:30,600 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,600 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,600 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,600 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,601 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,601 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,601 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,601 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,602 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,602 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,602 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,602 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,602 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,602 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,603 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,603 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,603 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,603 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,603 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,603 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,604 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,608 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,609 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,609 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,609 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,610 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,611 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,611 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,613 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,613 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,613 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,613 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,613 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,615 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,615 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,615 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,615 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,615 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,621 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,622 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,623 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,623 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,623 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,623 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,623 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:30,625 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-11 16:06:30,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 16:06:30,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 16:06:30,625 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 16:06:30,625 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 16:06:30,625 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 16:06:30,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 16:06:30,626 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 16:06:30,626 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 16:06:30,628 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-09-11 16:06:30,628 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-11 16:06:30,649 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-11 16:06:30,649 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-11 16:06:30,650 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. [2020-09-11 16:06:30,653 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-09-11 16:06:30,669 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-09-11 16:06:30,669 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-11 16:06:30,671 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. [2020-09-11 16:06:30,673 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1308 [2020-09-11 16:06:30,673 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 16:06:32,296 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-09-11 16:06:32,601 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-11 16:06:32,778 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-11 16:06:32,785 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1426 [2020-09-11 16:06:32,785 INFO L214 etLargeBlockEncoding]: Total number of compositions: 74 [2020-09-11 16:06:32,786 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-09-11 16:06:32,815 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-09-11 16:06:32,815 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-09-11 16:06:32,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 16:06:32,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:32,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 16:06:32,816 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 16:06:32,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:32,817 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-09-11 16:06:32,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:32,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158976215] [2020-09-11 16:06:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:32,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158976215] [2020-09-11 16:06:32,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:32,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 16:06:32,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079984653] [2020-09-11 16:06:32,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 16:06:32,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:32,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 16:06:32,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 16:06:32,884 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-09-11 16:06:32,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:32,926 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-09-11 16:06:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 16:06:32,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 16:06:32,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:32,934 INFO L225 Difference]: With dead ends: 600 [2020-09-11 16:06:32,934 INFO L226 Difference]: Without dead ends: 559 [2020-09-11 16:06:32,934 INFO L675 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 [2020-09-11 16:06:32,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-11 16:06:32,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-09-11 16:06:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-11 16:06:32,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-09-11 16:06:32,977 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-09-11 16:06:32,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:32,977 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-09-11 16:06:32,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 16:06:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-09-11 16:06:32,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 16:06:32,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:32,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:32,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 16:06:32,979 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 16:06:32,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:32,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-09-11 16:06:32,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:32,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43822711] [2020-09-11 16:06:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:33,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43822711] [2020-09-11 16:06:33,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:33,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:06:33,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244081442] [2020-09-11 16:06:33,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:06:33,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:33,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:06:33,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:06:33,077 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-09-11 16:06:33,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:33,196 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-09-11 16:06:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:06:33,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 16:06:33,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:33,203 INFO L225 Difference]: With dead ends: 817 [2020-09-11 16:06:33,204 INFO L226 Difference]: Without dead ends: 812 [2020-09-11 16:06:33,204 INFO L675 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 [2020-09-11 16:06:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-11 16:06:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-09-11 16:06:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-09-11 16:06:33,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-09-11 16:06:33,235 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-09-11 16:06:33,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:33,236 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-09-11 16:06:33,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:06:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-09-11 16:06:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 16:06:33,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:33,243 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:33,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 16:06:33,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 16:06:33,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:33,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-09-11 16:06:33,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:33,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307813649] [2020-09-11 16:06:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:06:33,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307813649] [2020-09-11 16:06:33,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:33,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:06:33,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682937423] [2020-09-11 16:06:33,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:06:33,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:33,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:06:33,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:06:33,346 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-09-11 16:06:33,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:33,444 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-09-11 16:06:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:06:33,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 16:06:33,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:33,451 INFO L225 Difference]: With dead ends: 843 [2020-09-11 16:06:33,451 INFO L226 Difference]: Without dead ends: 836 [2020-09-11 16:06:33,452 INFO L675 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 [2020-09-11 16:06:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-11 16:06:33,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-09-11 16:06:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-11 16:06:33,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-09-11 16:06:33,491 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-09-11 16:06:33,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:33,491 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-09-11 16:06:33,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:06:33,492 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-09-11 16:06:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 16:06:33,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:33,494 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:33,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 16:06:33,495 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 16:06:33,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:33,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-09-11 16:06:33,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:33,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261974317] [2020-09-11 16:06:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:33,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261974317] [2020-09-11 16:06:33,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360478771] [2020-09-11 16:06:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:06:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:33,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:06:33,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:06:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:33,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:06:33,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:06:33,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668340714] [2020-09-11 16:06:33,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:06:33,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:33,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:06:33,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:06:33,808 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-09-11 16:06:34,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:34,136 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-09-11 16:06:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:06:34,138 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-11 16:06:34,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:34,147 INFO L225 Difference]: With dead ends: 1059 [2020-09-11 16:06:34,147 INFO L226 Difference]: Without dead ends: 1052 [2020-09-11 16:06:34,148 INFO L675 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 [2020-09-11 16:06:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-09-11 16:06:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-09-11 16:06:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-11 16:06:34,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-09-11 16:06:34,177 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-09-11 16:06:34,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:34,178 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-09-11 16:06:34,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:06:34,178 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-09-11 16:06:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 16:06:34,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:34,179 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:34,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-11 16:06:34,392 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 16:06:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:34,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-09-11 16:06:34,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:34,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958139045] [2020-09-11 16:06:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:34,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:06:34,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958139045] [2020-09-11 16:06:34,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:34,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:06:34,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190364102] [2020-09-11 16:06:34,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:06:34,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:34,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:06:34,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:06:34,545 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-09-11 16:06:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:34,833 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-09-11 16:06:34,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:06:34,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 16:06:34,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:34,844 INFO L225 Difference]: With dead ends: 1053 [2020-09-11 16:06:34,844 INFO L226 Difference]: Without dead ends: 1045 [2020-09-11 16:06:34,845 INFO L675 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 [2020-09-11 16:06:34,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-11 16:06:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-09-11 16:06:34,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-11 16:06:34,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-09-11 16:06:34,881 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-09-11 16:06:34,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:34,881 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-09-11 16:06:34,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:06:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-09-11 16:06:34,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 16:06:34,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:34,883 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:34,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-11 16:06:34,883 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 16:06:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:34,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-09-11 16:06:34,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:34,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559508351] [2020-09-11 16:06:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:06:34,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559508351] [2020-09-11 16:06:34,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:34,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:06:34,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140759297] [2020-09-11 16:06:34,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:06:34,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:34,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:06:34,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:06:34,980 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-09-11 16:06:35,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:35,079 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-09-11 16:06:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:06:35,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 16:06:35,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:35,085 INFO L225 Difference]: With dead ends: 736 [2020-09-11 16:06:35,085 INFO L226 Difference]: Without dead ends: 728 [2020-09-11 16:06:35,086 INFO L675 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 [2020-09-11 16:06:35,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-09-11 16:06:35,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-09-11 16:06:35,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-11 16:06:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-09-11 16:06:35,106 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-09-11 16:06:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:35,106 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-09-11 16:06:35,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:06:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-09-11 16:06:35,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 16:06:35,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:35,108 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:35,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-11 16:06:35,108 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 16:06:35,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:35,108 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-09-11 16:06:35,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:35,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122034922] [2020-09-11 16:06:35,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 16:06:35,134 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 16:06:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 16:06:35,150 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 16:06:35,161 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 16:06:35,161 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 16:06:35,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-11 16:06:35,161 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 16:06:35,162 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 16:06:35,162 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-11 16:06:35,179 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,180 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,181 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,181 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,182 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,182 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,182 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,182 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,182 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,182 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,183 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,183 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,190 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,192 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,192 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,193 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,195 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,196 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,196 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,196 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,196 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,204 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,204 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,204 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,204 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:35,205 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-11 16:06:35,206 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 16:06:35,206 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 16:06:35,206 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 16:06:35,206 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 16:06:35,206 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 16:06:35,206 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 16:06:35,206 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 16:06:35,206 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 16:06:35,208 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-09-11 16:06:35,208 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-11 16:06:35,227 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-11 16:06:35,228 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-11 16:06:35,229 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. [2020-09-11 16:06:35,232 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-09-11 16:06:35,248 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-09-11 16:06:35,249 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-11 16:06:35,250 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. [2020-09-11 16:06:35,253 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1756 [2020-09-11 16:06:35,253 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 16:06:37,165 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-09-11 16:06:37,503 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-11 16:06:37,715 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-11 16:06:37,828 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2033 [2020-09-11 16:06:37,828 INFO L214 etLargeBlockEncoding]: Total number of compositions: 86 [2020-09-11 16:06:37,828 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-09-11 16:06:37,940 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-09-11 16:06:37,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-09-11 16:06:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 16:06:37,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:37,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 16:06:37,941 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:37,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:37,941 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-09-11 16:06:37,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:37,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149553769] [2020-09-11 16:06:37,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:37,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149553769] [2020-09-11 16:06:37,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:37,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 16:06:37,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866612407] [2020-09-11 16:06:37,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 16:06:37,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:37,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 16:06:37,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 16:06:37,971 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-09-11 16:06:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:38,022 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-09-11 16:06:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 16:06:38,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 16:06:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:38,039 INFO L225 Difference]: With dead ends: 1889 [2020-09-11 16:06:38,039 INFO L226 Difference]: Without dead ends: 1767 [2020-09-11 16:06:38,039 INFO L675 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 [2020-09-11 16:06:38,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-11 16:06:38,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-09-11 16:06:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-11 16:06:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-09-11 16:06:38,122 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-09-11 16:06:38,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:38,123 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-09-11 16:06:38,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 16:06:38,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-09-11 16:06:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 16:06:38,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:38,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:38,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-11 16:06:38,125 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:38,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:38,125 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-09-11 16:06:38,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:38,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065976647] [2020-09-11 16:06:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:38,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065976647] [2020-09-11 16:06:38,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:38,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:06:38,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811785580] [2020-09-11 16:06:38,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:06:38,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:38,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:06:38,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:06:38,192 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-09-11 16:06:38,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:38,298 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-09-11 16:06:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:06:38,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 16:06:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:38,323 INFO L225 Difference]: With dead ends: 2905 [2020-09-11 16:06:38,323 INFO L226 Difference]: Without dead ends: 2899 [2020-09-11 16:06:38,324 INFO L675 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 [2020-09-11 16:06:38,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-11 16:06:38,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-09-11 16:06:38,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-11 16:06:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-09-11 16:06:38,429 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-09-11 16:06:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:38,430 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-09-11 16:06:38,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:06:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-09-11 16:06:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 16:06:38,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:38,431 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:38,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-11 16:06:38,431 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:38,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:38,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-09-11 16:06:38,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:38,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405795493] [2020-09-11 16:06:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:06:38,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405795493] [2020-09-11 16:06:38,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:38,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:06:38,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560732495] [2020-09-11 16:06:38,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:06:38,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:38,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:06:38,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:06:38,512 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-09-11 16:06:38,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:38,639 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-09-11 16:06:38,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:06:38,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 16:06:38,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:38,678 INFO L225 Difference]: With dead ends: 3204 [2020-09-11 16:06:38,679 INFO L226 Difference]: Without dead ends: 3194 [2020-09-11 16:06:38,679 INFO L675 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 [2020-09-11 16:06:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-11 16:06:38,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-09-11 16:06:38,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-11 16:06:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-09-11 16:06:38,836 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-09-11 16:06:38,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:38,838 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-09-11 16:06:38,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:06:38,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-09-11 16:06:38,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 16:06:38,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:38,839 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:38,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-11 16:06:38,839 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:38,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-09-11 16:06:38,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:38,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005752432] [2020-09-11 16:06:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:38,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005752432] [2020-09-11 16:06:38,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711977855] [2020-09-11 16:06:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:06:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:39,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:06:39,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:06:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:39,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:06:39,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:06:39,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382336311] [2020-09-11 16:06:39,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:06:39,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:39,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:06:39,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:06:39,112 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-09-11 16:06:39,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:39,491 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-09-11 16:06:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:06:39,492 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-11 16:06:39,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:39,515 INFO L225 Difference]: With dead ends: 4556 [2020-09-11 16:06:39,515 INFO L226 Difference]: Without dead ends: 4546 [2020-09-11 16:06:39,515 INFO L675 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 [2020-09-11 16:06:39,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-09-11 16:06:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-09-11 16:06:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-11 16:06:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-09-11 16:06:39,632 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-09-11 16:06:39,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:39,633 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-09-11 16:06:39,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:06:39,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-09-11 16:06:39,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 16:06:39,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:39,634 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:39,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-11 16:06:39,850 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:39,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:39,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-09-11 16:06:39,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:39,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374405869] [2020-09-11 16:06:39,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:06:39,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374405869] [2020-09-11 16:06:39,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:39,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:06:39,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666861285] [2020-09-11 16:06:39,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:06:39,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:39,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:06:39,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:06:39,934 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-09-11 16:06:40,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:40,232 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-09-11 16:06:40,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:06:40,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 16:06:40,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:40,321 INFO L225 Difference]: With dead ends: 4612 [2020-09-11 16:06:40,322 INFO L226 Difference]: Without dead ends: 4601 [2020-09-11 16:06:40,322 INFO L675 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 [2020-09-11 16:06:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-09-11 16:06:40,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-09-11 16:06:40,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-11 16:06:40,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-09-11 16:06:40,424 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-09-11 16:06:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:40,424 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-09-11 16:06:40,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:06:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-09-11 16:06:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 16:06:40,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:40,426 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:40,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-11 16:06:40,426 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:40,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:40,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-09-11 16:06:40,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:40,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022323620] [2020-09-11 16:06:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:06:40,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022323620] [2020-09-11 16:06:40,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:40,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:06:40,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015256931] [2020-09-11 16:06:40,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:06:40,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:40,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:06:40,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:06:40,501 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-09-11 16:06:40,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:40,626 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-09-11 16:06:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:06:40,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 16:06:40,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:40,641 INFO L225 Difference]: With dead ends: 3265 [2020-09-11 16:06:40,641 INFO L226 Difference]: Without dead ends: 3250 [2020-09-11 16:06:40,641 INFO L675 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 [2020-09-11 16:06:40,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-11 16:06:40,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-09-11 16:06:40,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-11 16:06:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-09-11 16:06:40,740 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-09-11 16:06:40,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:40,740 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-09-11 16:06:40,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:06:40,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-09-11 16:06:40,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:06:40,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:40,743 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:40,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-11 16:06:40,743 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:40,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:40,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-09-11 16:06:40,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:40,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864850680] [2020-09-11 16:06:40,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:06:40,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864850680] [2020-09-11 16:06:40,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001929884] [2020-09-11 16:06:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:06:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:40,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:06:40,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:06:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:06:41,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:06:41,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:06:41,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385355114] [2020-09-11 16:06:41,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:06:41,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:41,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:06:41,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:06:41,027 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-09-11 16:06:41,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:41,474 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-09-11 16:06:41,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:06:41,474 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-11 16:06:41,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:41,492 INFO L225 Difference]: With dead ends: 4825 [2020-09-11 16:06:41,492 INFO L226 Difference]: Without dead ends: 4813 [2020-09-11 16:06:41,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-11 16:06:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-09-11 16:06:41,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-09-11 16:06:41,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-11 16:06:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-09-11 16:06:41,616 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-09-11 16:06:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:41,616 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-09-11 16:06:41,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:06:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-09-11 16:06:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:06:41,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:41,618 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:41,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:06:41,831 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:41,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:41,832 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-09-11 16:06:41,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:41,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163241465] [2020-09-11 16:06:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:42,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:06:42,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163241465] [2020-09-11 16:06:42,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43317794] [2020-09-11 16:06:42,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:06:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:42,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:06:42,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:06:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:06:42,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:06:42,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:06:42,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061399895] [2020-09-11 16:06:42,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:06:42,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:42,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:06:42,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:06:42,172 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-09-11 16:06:42,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:42,609 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-09-11 16:06:42,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:06:42,610 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-11 16:06:42,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:42,629 INFO L225 Difference]: With dead ends: 4942 [2020-09-11 16:06:42,629 INFO L226 Difference]: Without dead ends: 4925 [2020-09-11 16:06:42,630 INFO L675 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 [2020-09-11 16:06:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-09-11 16:06:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-09-11 16:06:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-11 16:06:42,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-09-11 16:06:42,739 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-09-11 16:06:42,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:42,739 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-09-11 16:06:42,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:06:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-09-11 16:06:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:06:42,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:42,741 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:42,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:06:42,954 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:42,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:42,955 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-09-11 16:06:42,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:42,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897057434] [2020-09-11 16:06:42,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:06:43,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897057434] [2020-09-11 16:06:43,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:43,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:06:43,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408335671] [2020-09-11 16:06:43,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:06:43,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:43,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:06:43,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:06:43,039 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-09-11 16:06:43,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:43,336 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-09-11 16:06:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:06:43,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 16:06:43,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:43,353 INFO L225 Difference]: With dead ends: 4934 [2020-09-11 16:06:43,353 INFO L226 Difference]: Without dead ends: 4917 [2020-09-11 16:06:43,354 INFO L675 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 [2020-09-11 16:06:43,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-09-11 16:06:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-09-11 16:06:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-09-11 16:06:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-09-11 16:06:43,458 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-09-11 16:06:43,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:43,459 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-09-11 16:06:43,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:06:43,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-09-11 16:06:43,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:06:43,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:43,461 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:43,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-11 16:06:43,461 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:43,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:43,462 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-09-11 16:06:43,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:43,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96449896] [2020-09-11 16:06:43,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:06:43,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96449896] [2020-09-11 16:06:43,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:43,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:06:43,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154532387] [2020-09-11 16:06:43,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:06:43,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:43,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:06:43,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:06:43,550 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-09-11 16:06:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:43,946 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-09-11 16:06:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:06:43,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 16:06:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:43,955 INFO L225 Difference]: With dead ends: 4774 [2020-09-11 16:06:43,955 INFO L226 Difference]: Without dead ends: 4757 [2020-09-11 16:06:43,956 INFO L675 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 [2020-09-11 16:06:43,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-09-11 16:06:44,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-09-11 16:06:44,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-11 16:06:44,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-09-11 16:06:44,040 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-09-11 16:06:44,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:44,040 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-09-11 16:06:44,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:06:44,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-09-11 16:06:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:06:44,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:44,042 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:44,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-11 16:06:44,043 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:44,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:44,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-09-11 16:06:44,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:44,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576226175] [2020-09-11 16:06:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:44,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576226175] [2020-09-11 16:06:44,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709411336] [2020-09-11 16:06:44,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:06:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:44,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:06:44,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:06:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:44,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:06:44,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:06:44,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626345637] [2020-09-11 16:06:44,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:06:44,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:44,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:06:44,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:06:44,350 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-09-11 16:06:45,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:45,311 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-09-11 16:06:45,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:06:45,312 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 16:06:45,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:45,322 INFO L225 Difference]: With dead ends: 6025 [2020-09-11 16:06:45,322 INFO L226 Difference]: Without dead ends: 6017 [2020-09-11 16:06:45,322 INFO L675 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 [2020-09-11 16:06:45,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-09-11 16:06:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-09-11 16:06:45,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-11 16:06:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-09-11 16:06:45,482 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-09-11 16:06:45,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:45,482 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-09-11 16:06:45,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:06:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-09-11 16:06:45,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:06:45,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:45,484 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:45,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-11 16:06:45,685 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:45,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:45,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-09-11 16:06:45,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:45,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929986848] [2020-09-11 16:06:45,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:06:45,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929986848] [2020-09-11 16:06:45,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157749322] [2020-09-11 16:06:45,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:06:45,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 16:06:45,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:06:45,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:06:45,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:06:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:06:45,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:06:45,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:06:45,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977719945] [2020-09-11 16:06:45,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:06:45,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:45,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:06:45,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:06:45,985 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-09-11 16:06:46,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:46,944 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-09-11 16:06:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:06:46,945 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 16:06:46,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:46,955 INFO L225 Difference]: With dead ends: 5914 [2020-09-11 16:06:46,955 INFO L226 Difference]: Without dead ends: 5903 [2020-09-11 16:06:46,956 INFO L675 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 [2020-09-11 16:06:46,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-09-11 16:06:47,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-09-11 16:06:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-11 16:06:47,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-09-11 16:06:47,051 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-09-11 16:06:47,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:47,051 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-09-11 16:06:47,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:06:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-09-11 16:06:47,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:06:47,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:47,053 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:47,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:06:47,267 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:47,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:47,268 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-09-11 16:06:47,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:47,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299872593] [2020-09-11 16:06:47,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:06:47,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299872593] [2020-09-11 16:06:47,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553660134] [2020-09-11 16:06:47,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:06:47,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 16:06:47,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:06:47,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:06:47,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:06:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:06:47,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:06:47,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:06:47,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901277773] [2020-09-11 16:06:47,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:06:47,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:47,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:06:47,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:06:47,568 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-09-11 16:06:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:48,580 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-09-11 16:06:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:06:48,586 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 16:06:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:48,596 INFO L225 Difference]: With dead ends: 5907 [2020-09-11 16:06:48,597 INFO L226 Difference]: Without dead ends: 5899 [2020-09-11 16:06:48,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:06:48,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-09-11 16:06:48,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-09-11 16:06:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-11 16:06:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-09-11 16:06:48,679 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-09-11 16:06:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:48,679 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-09-11 16:06:48,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:06:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-09-11 16:06:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:06:48,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:48,682 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:48,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-11 16:06:48,897 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:48,897 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-09-11 16:06:48,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:48,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740022815] [2020-09-11 16:06:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:06:48,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740022815] [2020-09-11 16:06:48,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859568789] [2020-09-11 16:06:48,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:06:49,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 16:06:49,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:06:49,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:06:49,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:06:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:06:49,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:06:49,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:06:49,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715402844] [2020-09-11 16:06:49,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:06:49,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:49,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:06:49,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:06:49,219 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-09-11 16:06:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:50,218 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-09-11 16:06:50,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:06:50,219 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 16:06:50,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:50,229 INFO L225 Difference]: With dead ends: 5835 [2020-09-11 16:06:50,229 INFO L226 Difference]: Without dead ends: 5824 [2020-09-11 16:06:50,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:06:50,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-11 16:06:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-09-11 16:06:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-11 16:06:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-09-11 16:06:50,296 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-09-11 16:06:50,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:50,297 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-09-11 16:06:50,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:06:50,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-09-11 16:06:50,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:06:50,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:50,299 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:50,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-11 16:06:50,512 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:50,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:50,512 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-09-11 16:06:50,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:50,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092348478] [2020-09-11 16:06:50,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:06:50,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092348478] [2020-09-11 16:06:50,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:50,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:06:50,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759998584] [2020-09-11 16:06:50,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:06:50,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:50,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:06:50,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:06:50,730 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-09-11 16:06:51,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:51,558 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-09-11 16:06:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:06:51,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 16:06:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:51,568 INFO L225 Difference]: With dead ends: 5820 [2020-09-11 16:06:51,568 INFO L226 Difference]: Without dead ends: 5812 [2020-09-11 16:06:51,569 INFO L675 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 [2020-09-11 16:06:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-09-11 16:06:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-09-11 16:06:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-09-11 16:06:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-09-11 16:06:51,631 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-09-11 16:06:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:51,631 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-09-11 16:06:51,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:06:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-09-11 16:06:51,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:06:51,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:51,633 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:51,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-11 16:06:51,633 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:51,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:51,633 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-09-11 16:06:51,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:51,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222359909] [2020-09-11 16:06:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:06:51,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222359909] [2020-09-11 16:06:51,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:51,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:06:51,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926201107] [2020-09-11 16:06:51,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:06:51,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:51,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:06:51,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:06:51,737 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-09-11 16:06:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:52,507 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-09-11 16:06:52,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:06:52,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 16:06:52,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:52,517 INFO L225 Difference]: With dead ends: 5717 [2020-09-11 16:06:52,518 INFO L226 Difference]: Without dead ends: 5705 [2020-09-11 16:06:52,518 INFO L675 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 [2020-09-11 16:06:52,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-09-11 16:06:52,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-09-11 16:06:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-09-11 16:06:52,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-09-11 16:06:52,603 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-09-11 16:06:52,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:52,603 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-09-11 16:06:52,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:06:52,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-09-11 16:06:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:06:52,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:52,605 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:52,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-11 16:06:52,605 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:52,606 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-09-11 16:06:52,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:52,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304741423] [2020-09-11 16:06:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:06:52,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304741423] [2020-09-11 16:06:52,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:52,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:06:52,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594909640] [2020-09-11 16:06:52,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:06:52,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:52,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:06:52,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:06:52,681 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-09-11 16:06:52,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:52,786 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-09-11 16:06:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:06:52,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-11 16:06:52,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:52,793 INFO L225 Difference]: With dead ends: 2762 [2020-09-11 16:06:52,794 INFO L226 Difference]: Without dead ends: 2746 [2020-09-11 16:06:52,794 INFO L675 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 [2020-09-11 16:06:52,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-09-11 16:06:52,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-09-11 16:06:52,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-11 16:06:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-09-11 16:06:52,964 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-09-11 16:06:52,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:52,964 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-09-11 16:06:52,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:06:52,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-09-11 16:06:52,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-11 16:06:52,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:52,969 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:52,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-11 16:06:52,971 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 16:06:52,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:52,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-09-11 16:06:52,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:52,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054323031] [2020-09-11 16:06:52,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 16:06:52,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 16:06:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 16:06:53,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 16:06:53,023 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 16:06:53,023 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 16:06:53,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-11 16:06:53,024 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 16:06:53,025 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 16:06:53,025 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-11 16:06:53,044 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,044 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,044 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,044 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,045 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,045 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,046 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,046 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,046 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,046 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,047 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,049 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,049 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,050 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,050 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,051 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,051 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,051 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,056 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,059 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,059 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,059 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,059 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,059 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,063 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,063 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,063 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,064 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,064 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,065 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,065 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,065 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,067 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,067 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,067 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,069 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,069 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,069 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:06:53,080 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-11 16:06:53,081 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 16:06:53,081 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 16:06:53,081 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 16:06:53,081 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 16:06:53,081 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 16:06:53,081 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 16:06:53,081 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 16:06:53,082 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 16:06:53,083 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-09-11 16:06:53,083 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-11 16:06:53,104 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-11 16:06:53,104 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-11 16:06:53,105 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. [2020-09-11 16:06:53,110 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-09-11 16:06:53,128 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-09-11 16:06:53,128 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-11 16:06:53,129 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. [2020-09-11 16:06:53,133 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2264 [2020-09-11 16:06:53,133 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 16:06:55,131 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-11 16:06:55,404 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-09-11 16:06:55,669 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-11 16:06:55,764 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2999 [2020-09-11 16:06:55,765 INFO L214 etLargeBlockEncoding]: Total number of compositions: 104 [2020-09-11 16:06:55,765 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-09-11 16:06:56,181 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-09-11 16:06:56,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-09-11 16:06:56,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 16:06:56,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:56,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 16:06:56,182 INFO L427 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]=== [2020-09-11 16:06:56,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:56,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-09-11 16:06:56,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:56,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548295826] [2020-09-11 16:06:56,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:56,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548295826] [2020-09-11 16:06:56,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:56,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 16:06:56,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499935120] [2020-09-11 16:06:56,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 16:06:56,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:56,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 16:06:56,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 16:06:56,211 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-09-11 16:06:56,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:56,286 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-09-11 16:06:56,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 16:06:56,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 16:06:56,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:56,307 INFO L225 Difference]: With dead ends: 5844 [2020-09-11 16:06:56,307 INFO L226 Difference]: Without dead ends: 5479 [2020-09-11 16:06:56,308 INFO L675 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 [2020-09-11 16:06:56,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-09-11 16:06:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-09-11 16:06:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-09-11 16:06:56,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-09-11 16:06:56,481 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-09-11 16:06:56,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:56,482 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-09-11 16:06:56,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 16:06:56,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-09-11 16:06:56,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 16:06:56,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:56,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:56,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-11 16:06:56,483 INFO L427 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]=== [2020-09-11 16:06:56,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:56,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-09-11 16:06:56,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:56,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965402066] [2020-09-11 16:06:56,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:56,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965402066] [2020-09-11 16:06:56,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:56,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:06:56,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711842073] [2020-09-11 16:06:56,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:06:56,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:56,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:06:56,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:06:56,533 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-09-11 16:06:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:56,685 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-09-11 16:06:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:06:56,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 16:06:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:56,710 INFO L225 Difference]: With dead ends: 9673 [2020-09-11 16:06:56,710 INFO L226 Difference]: Without dead ends: 9666 [2020-09-11 16:06:56,710 INFO L675 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 [2020-09-11 16:06:56,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-09-11 16:06:56,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-09-11 16:06:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-09-11 16:06:56,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-09-11 16:06:56,951 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-09-11 16:06:56,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:56,951 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-09-11 16:06:56,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:06:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-09-11 16:06:56,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 16:06:56,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:56,952 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:56,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-11 16:06:56,952 INFO L427 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]=== [2020-09-11 16:06:56,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:56,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-09-11 16:06:56,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:56,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779208744] [2020-09-11 16:06:56,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:06:57,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779208744] [2020-09-11 16:06:57,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:57,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:06:57,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330697223] [2020-09-11 16:06:57,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:06:57,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:57,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:06:57,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:06:57,010 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-09-11 16:06:57,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:57,197 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-09-11 16:06:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:06:57,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 16:06:57,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:57,929 INFO L225 Difference]: With dead ends: 11081 [2020-09-11 16:06:57,929 INFO L226 Difference]: Without dead ends: 11068 [2020-09-11 16:06:57,931 INFO L675 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 [2020-09-11 16:06:58,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-09-11 16:06:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-09-11 16:06:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-09-11 16:06:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-09-11 16:06:58,217 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-09-11 16:06:58,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:58,217 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-09-11 16:06:58,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:06:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-09-11 16:06:58,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 16:06:58,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:58,218 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:58,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-11 16:06:58,218 INFO L427 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]=== [2020-09-11 16:06:58,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:58,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-09-11 16:06:58,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:58,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096888804] [2020-09-11 16:06:58,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:58,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096888804] [2020-09-11 16:06:58,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79024224] [2020-09-11 16:06:58,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:06:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:58,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:06:58,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:06:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:06:58,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:06:58,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:06:58,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506864738] [2020-09-11 16:06:58,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:06:58,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:58,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:06:58,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:06:58,438 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-09-11 16:06:58,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:58,895 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-09-11 16:06:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:06:58,896 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-11 16:06:58,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:06:58,939 INFO L225 Difference]: With dead ends: 16749 [2020-09-11 16:06:58,939 INFO L226 Difference]: Without dead ends: 16736 [2020-09-11 16:06:58,940 INFO L675 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 [2020-09-11 16:06:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-09-11 16:06:59,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-09-11 16:06:59,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-09-11 16:06:59,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-09-11 16:06:59,238 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-09-11 16:06:59,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:06:59,238 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-09-11 16:06:59,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:06:59,238 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-09-11 16:06:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 16:06:59,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:06:59,239 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:06:59,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:06:59,452 INFO L427 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]=== [2020-09-11 16:06:59,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:06:59,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-09-11 16:06:59,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:06:59,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532136140] [2020-09-11 16:06:59,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:06:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:06:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:06:59,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532136140] [2020-09-11 16:06:59,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:06:59,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:06:59,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994034013] [2020-09-11 16:06:59,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:06:59,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:06:59,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:06:59,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:06:59,521 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-09-11 16:06:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:06:59,997 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-09-11 16:06:59,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:06:59,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 16:06:59,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:00,040 INFO L225 Difference]: With dead ends: 17085 [2020-09-11 16:07:00,040 INFO L226 Difference]: Without dead ends: 17071 [2020-09-11 16:07:00,041 INFO L675 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 [2020-09-11 16:07:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-09-11 16:07:00,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-09-11 16:07:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-09-11 16:07:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-09-11 16:07:00,324 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-09-11 16:07:00,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:00,325 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-09-11 16:07:00,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:07:00,325 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-09-11 16:07:00,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 16:07:00,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:00,325 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:00,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-11 16:07:00,326 INFO L427 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]=== [2020-09-11 16:07:00,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:00,326 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-09-11 16:07:00,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:00,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599549185] [2020-09-11 16:07:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:07:00,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599549185] [2020-09-11 16:07:00,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:07:00,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:07:00,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322785472] [2020-09-11 16:07:00,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:07:00,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:00,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:07:00,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:07:00,394 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-09-11 16:07:00,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:00,607 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-09-11 16:07:00,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:07:00,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 16:07:00,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:00,664 INFO L225 Difference]: With dead ends: 12234 [2020-09-11 16:07:00,664 INFO L226 Difference]: Without dead ends: 12212 [2020-09-11 16:07:00,666 INFO L675 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 [2020-09-11 16:07:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-09-11 16:07:01,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-09-11 16:07:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-09-11 16:07:01,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-09-11 16:07:01,176 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-09-11 16:07:01,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:01,176 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-09-11 16:07:01,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:07:01,176 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-09-11 16:07:01,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:07:01,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:01,177 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:01,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-11 16:07:01,178 INFO L427 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]=== [2020-09-11 16:07:01,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:01,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-09-11 16:07:01,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:01,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180192848] [2020-09-11 16:07:01,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 16:07:01,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180192848] [2020-09-11 16:07:01,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474124134] [2020-09-11 16:07:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:01,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:07:01,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:01,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 16:07:01,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:01,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:07:01,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113182766] [2020-09-11 16:07:01,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:07:01,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:01,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:07:01,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:07:01,415 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-09-11 16:07:01,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:01,916 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-09-11 16:07:01,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:07:01,917 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-11 16:07:01,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:01,963 INFO L225 Difference]: With dead ends: 19016 [2020-09-11 16:07:01,964 INFO L226 Difference]: Without dead ends: 18998 [2020-09-11 16:07:01,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-11 16:07:02,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-09-11 16:07:02,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-09-11 16:07:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-09-11 16:07:02,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-09-11 16:07:02,294 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-09-11 16:07:02,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:02,294 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-09-11 16:07:02,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:07:02,294 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-09-11 16:07:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:07:02,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:02,296 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:02,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-09-11 16:07:02,502 INFO L427 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]=== [2020-09-11 16:07:02,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:02,503 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-09-11 16:07:02,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:02,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654850551] [2020-09-11 16:07:02,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:07:02,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654850551] [2020-09-11 16:07:02,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398166173] [2020-09-11 16:07:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:02,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:07:02,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:07:02,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:02,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:07:02,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106986311] [2020-09-11 16:07:02,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:07:02,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:02,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:07:02,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:07:02,771 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-09-11 16:07:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:03,332 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-09-11 16:07:03,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:07:03,333 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-11 16:07:03,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:03,422 INFO L225 Difference]: With dead ends: 19670 [2020-09-11 16:07:03,423 INFO L226 Difference]: Without dead ends: 19645 [2020-09-11 16:07:03,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-11 16:07:03,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-09-11 16:07:04,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-09-11 16:07:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-09-11 16:07:04,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-09-11 16:07:04,103 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-09-11 16:07:04,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:04,103 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-09-11 16:07:04,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:07:04,103 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-09-11 16:07:04,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:07:04,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:04,104 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:04,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-09-11 16:07:04,305 INFO L427 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]=== [2020-09-11 16:07:04,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:04,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-09-11 16:07:04,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:04,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055812359] [2020-09-11 16:07:04,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:07:04,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055812359] [2020-09-11 16:07:04,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:07:04,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:07:04,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391762831] [2020-09-11 16:07:04,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:07:04,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:04,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:07:04,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:07:04,383 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-09-11 16:07:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:04,879 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-09-11 16:07:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:07:04,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 16:07:04,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:04,966 INFO L225 Difference]: With dead ends: 19852 [2020-09-11 16:07:04,967 INFO L226 Difference]: Without dead ends: 19827 [2020-09-11 16:07:04,970 INFO L675 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 [2020-09-11 16:07:05,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-09-11 16:07:05,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-09-11 16:07:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-09-11 16:07:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-09-11 16:07:05,429 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-09-11 16:07:05,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:05,429 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-09-11 16:07:05,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:07:05,429 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-09-11 16:07:05,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:07:05,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:05,430 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:05,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-11 16:07:05,430 INFO L427 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]=== [2020-09-11 16:07:05,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:05,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-09-11 16:07:05,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:05,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026616873] [2020-09-11 16:07:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:07:05,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026616873] [2020-09-11 16:07:05,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:07:05,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:07:05,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481988443] [2020-09-11 16:07:05,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:07:05,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:05,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:07:05,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:07:05,507 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-09-11 16:07:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:05,914 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-09-11 16:07:05,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:07:05,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 16:07:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:05,963 INFO L225 Difference]: With dead ends: 19555 [2020-09-11 16:07:05,963 INFO L226 Difference]: Without dead ends: 19530 [2020-09-11 16:07:05,963 INFO L675 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 [2020-09-11 16:07:06,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-09-11 16:07:06,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-09-11 16:07:06,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-09-11 16:07:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-09-11 16:07:06,498 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-09-11 16:07:06,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:06,499 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-09-11 16:07:06,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:07:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-09-11 16:07:06,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:07:06,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:06,500 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:06,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-11 16:07:06,501 INFO L427 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]=== [2020-09-11 16:07:06,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:06,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-09-11 16:07:06,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:06,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200516637] [2020-09-11 16:07:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:07:06,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200516637] [2020-09-11 16:07:06,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295880531] [2020-09-11 16:07:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:06,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:06,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:07:06,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:06,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:06,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824344440] [2020-09-11 16:07:06,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:06,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:06,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:06,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:06,817 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-09-11 16:07:08,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:08,031 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-09-11 16:07:08,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:08,032 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 16:07:08,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:08,115 INFO L225 Difference]: With dead ends: 26969 [2020-09-11 16:07:08,115 INFO L226 Difference]: Without dead ends: 26957 [2020-09-11 16:07:08,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:07:08,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-09-11 16:07:08,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-09-11 16:07:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-09-11 16:07:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-09-11 16:07:08,536 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-09-11 16:07:08,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:08,537 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-09-11 16:07:08,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-09-11 16:07:08,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:07:08,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:08,538 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:08,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:07:08,739 INFO L427 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]=== [2020-09-11 16:07:08,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:08,739 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-09-11 16:07:08,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:08,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000246099] [2020-09-11 16:07:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 16:07:08,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000246099] [2020-09-11 16:07:08,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072148834] [2020-09-11 16:07:08,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:08,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 16:07:08,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:07:08,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:08,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 16:07:09,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:09,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:09,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388513241] [2020-09-11 16:07:09,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:09,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:09,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:09,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:09,051 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-09-11 16:07:10,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:10,244 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-09-11 16:07:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:10,245 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 16:07:10,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:10,315 INFO L225 Difference]: With dead ends: 26661 [2020-09-11 16:07:10,315 INFO L226 Difference]: Without dead ends: 26645 [2020-09-11 16:07:10,316 INFO L675 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 [2020-09-11 16:07:10,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-09-11 16:07:10,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-09-11 16:07:10,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-09-11 16:07:10,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-09-11 16:07:10,734 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-09-11 16:07:10,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:10,734 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-09-11 16:07:10,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:10,734 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-09-11 16:07:10,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:07:10,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:10,736 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:10,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-09-11 16:07:10,936 INFO L427 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]=== [2020-09-11 16:07:10,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:10,937 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-09-11 16:07:10,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:10,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906525021] [2020-09-11 16:07:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:07:11,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906525021] [2020-09-11 16:07:11,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26521677] [2020-09-11 16:07:11,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:11,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 16:07:11,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:07:11,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:11,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:07:11,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:11,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:11,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501951152] [2020-09-11 16:07:11,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:11,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:11,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:11,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:11,245 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-09-11 16:07:12,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:12,361 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-09-11 16:07:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:12,362 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 16:07:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:12,436 INFO L225 Difference]: With dead ends: 26686 [2020-09-11 16:07:12,436 INFO L226 Difference]: Without dead ends: 26674 [2020-09-11 16:07:12,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:07:12,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-09-11 16:07:12,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-09-11 16:07:12,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-09-11 16:07:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-09-11 16:07:13,022 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-09-11 16:07:13,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:13,022 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-09-11 16:07:13,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:13,022 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-09-11 16:07:13,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:07:13,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:13,024 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:13,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:07:13,239 INFO L427 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]=== [2020-09-11 16:07:13,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:13,240 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-09-11 16:07:13,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:13,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123560248] [2020-09-11 16:07:13,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:07:13,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123560248] [2020-09-11 16:07:13,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056557673] [2020-09-11 16:07:13,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:13,415 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 16:07:13,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:07:13,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:13,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:07:13,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:13,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:13,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065828220] [2020-09-11 16:07:13,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:13,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:13,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:13,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:13,525 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-09-11 16:07:14,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:14,751 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-09-11 16:07:14,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:14,752 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 16:07:14,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:14,826 INFO L225 Difference]: With dead ends: 26489 [2020-09-11 16:07:14,827 INFO L226 Difference]: Without dead ends: 26473 [2020-09-11 16:07:14,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:07:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-09-11 16:07:15,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-09-11 16:07:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-09-11 16:07:15,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-09-11 16:07:15,220 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-09-11 16:07:15,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:15,220 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-09-11 16:07:15,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:15,220 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-09-11 16:07:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:07:15,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:15,221 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:15,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-09-11 16:07:15,422 INFO L427 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]=== [2020-09-11 16:07:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:15,423 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-09-11 16:07:15,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:15,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538241025] [2020-09-11 16:07:15,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:07:15,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538241025] [2020-09-11 16:07:15,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:07:15,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:07:15,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820466386] [2020-09-11 16:07:15,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:07:15,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:15,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:07:15,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:07:15,493 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-09-11 16:07:15,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:15,700 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-09-11 16:07:15,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:07:15,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-11 16:07:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:15,752 INFO L225 Difference]: With dead ends: 13251 [2020-09-11 16:07:15,752 INFO L226 Difference]: Without dead ends: 13220 [2020-09-11 16:07:15,753 INFO L675 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 [2020-09-11 16:07:15,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-09-11 16:07:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-09-11 16:07:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-09-11 16:07:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-09-11 16:07:16,152 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-09-11 16:07:16,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:16,153 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-09-11 16:07:16,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:07:16,153 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-09-11 16:07:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:07:16,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:16,154 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:16,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-11 16:07:16,155 INFO L427 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]=== [2020-09-11 16:07:16,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:16,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-09-11 16:07:16,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:16,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275064495] [2020-09-11 16:07:16,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:07:16,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275064495] [2020-09-11 16:07:16,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:07:16,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:07:16,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659137001] [2020-09-11 16:07:16,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:07:16,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:16,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:07:16,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:07:16,254 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-09-11 16:07:17,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:17,337 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-09-11 16:07:17,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:17,338 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 16:07:17,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:17,436 INFO L225 Difference]: With dead ends: 29788 [2020-09-11 16:07:17,436 INFO L226 Difference]: Without dead ends: 29770 [2020-09-11 16:07:17,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 16:07:17,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-09-11 16:07:17,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-09-11 16:07:17,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-09-11 16:07:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-09-11 16:07:17,908 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-09-11 16:07:17,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:17,909 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-09-11 16:07:17,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:07:17,909 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-09-11 16:07:17,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:07:17,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:17,910 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:17,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-11 16:07:17,911 INFO L427 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]=== [2020-09-11 16:07:17,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:17,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-09-11 16:07:17,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:17,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131811870] [2020-09-11 16:07:17,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:07:18,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131811870] [2020-09-11 16:07:18,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:07:18,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:07:18,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79246375] [2020-09-11 16:07:18,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:07:18,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:18,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:07:18,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:07:18,013 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-09-11 16:07:19,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:19,026 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-09-11 16:07:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:19,027 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 16:07:19,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:19,097 INFO L225 Difference]: With dead ends: 29379 [2020-09-11 16:07:19,097 INFO L226 Difference]: Without dead ends: 29356 [2020-09-11 16:07:19,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 16:07:19,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-09-11 16:07:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-09-11 16:07:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-09-11 16:07:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-09-11 16:07:19,769 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-09-11 16:07:19,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:19,769 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-09-11 16:07:19,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:07:19,769 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-09-11 16:07:19,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:07:19,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:19,771 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:19,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-11 16:07:19,771 INFO L427 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]=== [2020-09-11 16:07:19,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:19,771 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-09-11 16:07:19,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:19,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109749546] [2020-09-11 16:07:19,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:19,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109749546] [2020-09-11 16:07:19,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843140955] [2020-09-11 16:07:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:19,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:07:19,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:20,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:20,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:07:20,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112949589] [2020-09-11 16:07:20,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:07:20,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:20,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:07:20,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:07:20,031 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-09-11 16:07:20,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:20,521 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-09-11 16:07:20,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:07:20,524 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-11 16:07:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:20,581 INFO L225 Difference]: With dead ends: 19727 [2020-09-11 16:07:20,581 INFO L226 Difference]: Without dead ends: 19703 [2020-09-11 16:07:20,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-11 16:07:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-09-11 16:07:20,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-09-11 16:07:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-09-11 16:07:20,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-09-11 16:07:20,943 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-09-11 16:07:20,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:20,944 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-09-11 16:07:20,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:07:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-09-11 16:07:20,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:07:20,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:20,946 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:21,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-09-11 16:07:21,147 INFO L427 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]=== [2020-09-11 16:07:21,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:21,148 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-09-11 16:07:21,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:21,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464815329] [2020-09-11 16:07:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:21,223 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 16:07:21,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464815329] [2020-09-11 16:07:21,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741545378] [2020-09-11 16:07:21,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:21,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:07:21,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 16:07:21,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:21,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:07:21,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139058372] [2020-09-11 16:07:21,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:07:21,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:21,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:07:21,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:07:21,405 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-09-11 16:07:21,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:21,850 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-09-11 16:07:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:07:21,851 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-11 16:07:21,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:21,926 INFO L225 Difference]: With dead ends: 20694 [2020-09-11 16:07:21,926 INFO L226 Difference]: Without dead ends: 20666 [2020-09-11 16:07:21,927 INFO L675 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 [2020-09-11 16:07:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-09-11 16:07:22,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-09-11 16:07:22,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-09-11 16:07:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-09-11 16:07:22,330 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-09-11 16:07:22,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:22,330 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-09-11 16:07:22,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:07:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-09-11 16:07:22,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:07:22,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:22,333 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:22,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:07:22,533 INFO L427 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]=== [2020-09-11 16:07:22,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:22,534 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-09-11 16:07:22,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:22,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080771128] [2020-09-11 16:07:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:22,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080771128] [2020-09-11 16:07:22,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166053026] [2020-09-11 16:07:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:22,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:07:22,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:22,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:22,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:07:22,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385444371] [2020-09-11 16:07:22,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:07:22,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:22,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:07:22,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:07:22,791 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-09-11 16:07:23,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:23,305 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-09-11 16:07:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:07:23,306 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-11 16:07:23,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:23,367 INFO L225 Difference]: With dead ends: 21396 [2020-09-11 16:07:23,368 INFO L226 Difference]: Without dead ends: 21359 [2020-09-11 16:07:23,368 INFO L675 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 [2020-09-11 16:07:23,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-09-11 16:07:23,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-09-11 16:07:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-09-11 16:07:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-09-11 16:07:23,866 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-09-11 16:07:23,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:23,867 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-09-11 16:07:23,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:07:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-09-11 16:07:23,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:07:23,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:23,869 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:24,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-09-11 16:07:24,070 INFO L427 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]=== [2020-09-11 16:07:24,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:24,071 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-09-11 16:07:24,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:24,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357584543] [2020-09-11 16:07:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:07:24,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357584543] [2020-09-11 16:07:24,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:07:24,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:07:24,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115059718] [2020-09-11 16:07:24,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:07:24,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:24,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:07:24,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:07:24,150 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-09-11 16:07:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:24,609 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-09-11 16:07:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:07:24,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 16:07:24,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:24,663 INFO L225 Difference]: With dead ends: 21489 [2020-09-11 16:07:24,663 INFO L226 Difference]: Without dead ends: 21452 [2020-09-11 16:07:24,664 INFO L675 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 [2020-09-11 16:07:24,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-09-11 16:07:24,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-09-11 16:07:24,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-09-11 16:07:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-09-11 16:07:25,027 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-09-11 16:07:25,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:25,027 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-09-11 16:07:25,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:07:25,027 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-09-11 16:07:25,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:07:25,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:25,029 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:25,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-11 16:07:25,030 INFO L427 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]=== [2020-09-11 16:07:25,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:25,030 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-09-11 16:07:25,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:25,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106221440] [2020-09-11 16:07:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:07:25,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106221440] [2020-09-11 16:07:25,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:07:25,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:07:25,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397230015] [2020-09-11 16:07:25,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:07:25,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:25,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:07:25,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:07:25,108 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-09-11 16:07:25,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:25,572 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-09-11 16:07:25,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:07:25,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 16:07:25,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:25,626 INFO L225 Difference]: With dead ends: 21198 [2020-09-11 16:07:25,626 INFO L226 Difference]: Without dead ends: 21161 [2020-09-11 16:07:25,626 INFO L675 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 [2020-09-11 16:07:25,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-09-11 16:07:25,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-09-11 16:07:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-09-11 16:07:26,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-09-11 16:07:26,013 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-09-11 16:07:26,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:26,013 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-09-11 16:07:26,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:07:26,013 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-09-11 16:07:26,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:07:26,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:26,016 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:26,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-11 16:07:26,016 INFO L427 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]=== [2020-09-11 16:07:26,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:26,016 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-09-11 16:07:26,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:26,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527748526] [2020-09-11 16:07:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:26,091 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:07:26,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527748526] [2020-09-11 16:07:26,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:07:26,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:07:26,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695625661] [2020-09-11 16:07:26,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:07:26,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:26,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:07:26,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:07:26,093 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-09-11 16:07:26,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:26,541 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-09-11 16:07:26,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:07:26,542 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 16:07:26,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:26,599 INFO L225 Difference]: With dead ends: 21067 [2020-09-11 16:07:26,599 INFO L226 Difference]: Without dead ends: 21030 [2020-09-11 16:07:26,599 INFO L675 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 [2020-09-11 16:07:26,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-09-11 16:07:27,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-09-11 16:07:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-09-11 16:07:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-09-11 16:07:27,132 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-09-11 16:07:27,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:27,133 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-09-11 16:07:27,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:07:27,133 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-09-11 16:07:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:27,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:27,136 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:27,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-11 16:07:27,137 INFO L427 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]=== [2020-09-11 16:07:27,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:27,137 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-09-11 16:07:27,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:27,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055252174] [2020-09-11 16:07:27,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:07:27,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055252174] [2020-09-11 16:07:27,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197844319] [2020-09-11 16:07:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:27,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:27,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:07:27,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:27,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:27,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972231847] [2020-09-11 16:07:27,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:27,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:27,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:27,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:27,476 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-09-11 16:07:28,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:28,803 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-09-11 16:07:28,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:28,804 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:07:28,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:28,878 INFO L225 Difference]: With dead ends: 30145 [2020-09-11 16:07:28,878 INFO L226 Difference]: Without dead ends: 30125 [2020-09-11 16:07:28,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:07:29,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-09-11 16:07:29,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-09-11 16:07:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-09-11 16:07:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-09-11 16:07:29,373 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-09-11 16:07:29,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:29,373 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-09-11 16:07:29,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:29,373 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-09-11 16:07:29,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:29,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:29,376 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:29,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-09-11 16:07:29,577 INFO L427 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]=== [2020-09-11 16:07:29,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:29,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-09-11 16:07:29,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:29,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008725549] [2020-09-11 16:07:29,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:07:29,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008725549] [2020-09-11 16:07:29,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587717503] [2020-09-11 16:07:29,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:29,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:29,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:07:29,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:29,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:29,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864307305] [2020-09-11 16:07:29,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:29,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:29,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:29,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:29,910 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-09-11 16:07:31,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:31,062 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-09-11 16:07:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:31,063 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:07:31,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:31,134 INFO L225 Difference]: With dead ends: 29696 [2020-09-11 16:07:31,134 INFO L226 Difference]: Without dead ends: 29676 [2020-09-11 16:07:31,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:07:31,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-09-11 16:07:31,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-09-11 16:07:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-09-11 16:07:31,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-09-11 16:07:31,780 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-09-11 16:07:31,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:31,780 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-09-11 16:07:31,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:31,780 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-09-11 16:07:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:31,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:31,784 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:31,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-09-11 16:07:31,987 INFO L427 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]=== [2020-09-11 16:07:31,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:31,987 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-09-11 16:07:31,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:31,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678071011] [2020-09-11 16:07:31,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:32,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678071011] [2020-09-11 16:07:32,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051359437] [2020-09-11 16:07:32,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:32,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 16:07:32,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:07:32,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:32,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:32,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:32,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:32,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117183567] [2020-09-11 16:07:32,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:32,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:32,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:32,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:32,313 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-09-11 16:07:33,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:33,480 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-09-11 16:07:33,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:33,481 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:07:33,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:33,551 INFO L225 Difference]: With dead ends: 29267 [2020-09-11 16:07:33,551 INFO L226 Difference]: Without dead ends: 29245 [2020-09-11 16:07:33,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:07:33,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-09-11 16:07:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-09-11 16:07:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-09-11 16:07:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-09-11 16:07:33,988 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-09-11 16:07:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:33,988 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-09-11 16:07:33,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-09-11 16:07:33,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:33,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:33,991 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:34,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-09-11 16:07:34,192 INFO L427 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]=== [2020-09-11 16:07:34,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:34,193 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-09-11 16:07:34,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:34,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781346057] [2020-09-11 16:07:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:34,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781346057] [2020-09-11 16:07:34,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903480487] [2020-09-11 16:07:34,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:34,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 16:07:34,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:07:34,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:34,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:34,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:34,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:34,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794046444] [2020-09-11 16:07:34,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:34,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:34,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:34,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:34,539 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-09-11 16:07:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:35,913 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-09-11 16:07:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:35,913 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:07:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:35,990 INFO L225 Difference]: With dead ends: 28920 [2020-09-11 16:07:35,991 INFO L226 Difference]: Without dead ends: 28898 [2020-09-11 16:07:35,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:07:36,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-09-11 16:07:36,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-09-11 16:07:36,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-09-11 16:07:36,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-09-11 16:07:36,479 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-09-11 16:07:36,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:36,479 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-09-11 16:07:36,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-09-11 16:07:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:36,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:36,483 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:36,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:07:36,684 INFO L427 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]=== [2020-09-11 16:07:36,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:36,684 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-09-11 16:07:36,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:36,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561566432] [2020-09-11 16:07:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:36,779 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-11 16:07:36,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561566432] [2020-09-11 16:07:36,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873017135] [2020-09-11 16:07:36,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:37,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-11 16:07:37,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:07:37,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:37,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-11 16:07:37,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:37,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:37,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070518384] [2020-09-11 16:07:37,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:37,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:37,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:37,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:37,160 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-09-11 16:07:38,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:38,319 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-09-11 16:07:38,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:38,320 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:07:38,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:38,398 INFO L225 Difference]: With dead ends: 29038 [2020-09-11 16:07:38,398 INFO L226 Difference]: Without dead ends: 29018 [2020-09-11 16:07:38,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:07:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-09-11 16:07:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-09-11 16:07:38,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-09-11 16:07:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-09-11 16:07:38,862 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-09-11 16:07:38,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:38,863 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-09-11 16:07:38,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-09-11 16:07:38,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:38,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:38,866 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:39,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-09-11 16:07:39,067 INFO L427 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]=== [2020-09-11 16:07:39,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:39,067 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-09-11 16:07:39,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:39,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409218711] [2020-09-11 16:07:39,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:39,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 16:07:39,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409218711] [2020-09-11 16:07:39,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903970921] [2020-09-11 16:07:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:39,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:39,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-11 16:07:39,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:39,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:39,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135467748] [2020-09-11 16:07:39,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:39,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:39,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:39,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:39,397 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-09-11 16:07:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:40,747 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-09-11 16:07:40,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:40,747 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:07:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:40,818 INFO L225 Difference]: With dead ends: 29417 [2020-09-11 16:07:40,819 INFO L226 Difference]: Without dead ends: 29397 [2020-09-11 16:07:40,819 INFO L675 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 [2020-09-11 16:07:40,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-09-11 16:07:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-09-11 16:07:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-09-11 16:07:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-09-11 16:07:41,261 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-09-11 16:07:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:41,261 INFO L479 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-09-11 16:07:41,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-09-11 16:07:41,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:41,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:41,265 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:41,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:07:41,471 INFO L427 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]=== [2020-09-11 16:07:41,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:41,472 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-09-11 16:07:41,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:41,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147493458] [2020-09-11 16:07:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 16:07:41,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147493458] [2020-09-11 16:07:41,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822871456] [2020-09-11 16:07:41,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:41,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 16:07:41,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:07:41,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:41,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 16:07:41,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:41,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:41,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240213686] [2020-09-11 16:07:41,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:41,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:41,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:41,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:41,836 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-09-11 16:07:43,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:43,163 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-09-11 16:07:43,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:43,164 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:07:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:43,234 INFO L225 Difference]: With dead ends: 29064 [2020-09-11 16:07:43,235 INFO L226 Difference]: Without dead ends: 29037 [2020-09-11 16:07:43,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:07:43,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-09-11 16:07:43,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-09-11 16:07:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-09-11 16:07:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-09-11 16:07:43,798 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-09-11 16:07:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:43,799 INFO L479 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-09-11 16:07:43,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:43,799 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-09-11 16:07:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:43,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:43,802 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:44,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-09-11 16:07:44,003 INFO L427 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]=== [2020-09-11 16:07:44,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:44,004 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-09-11 16:07:44,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:44,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95294231] [2020-09-11 16:07:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 16:07:44,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95294231] [2020-09-11 16:07:44,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760971398] [2020-09-11 16:07:44,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:44,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 16:07:44,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:07:44,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:44,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 16:07:44,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:44,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:44,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143248694] [2020-09-11 16:07:44,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:44,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:44,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:44,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:44,342 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-09-11 16:07:45,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:45,507 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-09-11 16:07:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:45,508 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:07:45,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:45,576 INFO L225 Difference]: With dead ends: 28523 [2020-09-11 16:07:45,576 INFO L226 Difference]: Without dead ends: 28501 [2020-09-11 16:07:45,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:07:45,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-09-11 16:07:45,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-09-11 16:07:45,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-09-11 16:07:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-09-11 16:07:46,007 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-09-11 16:07:46,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:46,007 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-09-11 16:07:46,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-09-11 16:07:46,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:46,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:46,012 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:46,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:07:46,213 INFO L427 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]=== [2020-09-11 16:07:46,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:46,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-09-11 16:07:46,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:46,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819251719] [2020-09-11 16:07:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:46,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819251719] [2020-09-11 16:07:46,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710612731] [2020-09-11 16:07:46,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:46,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 16:07:46,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:07:46,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:46,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:46,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:46,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:46,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784963890] [2020-09-11 16:07:46,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:46,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:46,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:46,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:46,568 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-09-11 16:07:47,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:47,585 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-09-11 16:07:47,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:47,585 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:07:47,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:47,654 INFO L225 Difference]: With dead ends: 28636 [2020-09-11 16:07:47,654 INFO L226 Difference]: Without dead ends: 28616 [2020-09-11 16:07:47,654 INFO L675 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 [2020-09-11 16:07:47,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-09-11 16:07:48,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-09-11 16:07:48,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-09-11 16:07:48,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-09-11 16:07:48,091 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-09-11 16:07:48,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:48,092 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-09-11 16:07:48,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:48,092 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-09-11 16:07:48,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:48,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:48,097 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:48,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-09-11 16:07:48,310 INFO L427 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]=== [2020-09-11 16:07:48,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:48,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-09-11 16:07:48,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:48,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127673310] [2020-09-11 16:07:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:48,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127673310] [2020-09-11 16:07:48,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229287409] [2020-09-11 16:07:48,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:48,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 16:07:48,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:07:48,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:48,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:48,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:48,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:48,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070747140] [2020-09-11 16:07:48,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:48,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:48,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:48,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:48,649 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-09-11 16:07:49,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:49,821 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-09-11 16:07:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:49,821 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:07:49,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:49,894 INFO L225 Difference]: With dead ends: 28297 [2020-09-11 16:07:49,894 INFO L226 Difference]: Without dead ends: 28277 [2020-09-11 16:07:49,895 INFO L675 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 [2020-09-11 16:07:50,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-09-11 16:07:50,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-09-11 16:07:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-09-11 16:07:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-09-11 16:07:50,320 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-09-11 16:07:50,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:50,320 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-09-11 16:07:50,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:50,320 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-09-11 16:07:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:50,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:50,323 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:50,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:07:50,524 INFO L427 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]=== [2020-09-11 16:07:50,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:50,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-09-11 16:07:50,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:50,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814200209] [2020-09-11 16:07:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:50,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814200209] [2020-09-11 16:07:50,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266940908] [2020-09-11 16:07:50,631 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:50,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 16:07:50,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:07:50,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:50,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:50,861 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:50,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:50,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:50,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297039052] [2020-09-11 16:07:50,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:50,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:50,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:50,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:50,863 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-09-11 16:07:52,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:52,245 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-09-11 16:07:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:52,245 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:07:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:52,322 INFO L225 Difference]: With dead ends: 28565 [2020-09-11 16:07:52,322 INFO L226 Difference]: Without dead ends: 28538 [2020-09-11 16:07:52,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:07:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-09-11 16:07:52,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-09-11 16:07:52,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-09-11 16:07:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-09-11 16:07:52,737 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-09-11 16:07:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:52,738 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-09-11 16:07:52,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-09-11 16:07:52,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:52,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:52,741 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:52,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-09-11 16:07:52,942 INFO L427 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]=== [2020-09-11 16:07:52,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:52,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-09-11 16:07:52,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:52,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013939254] [2020-09-11 16:07:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:53,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013939254] [2020-09-11 16:07:53,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195664509] [2020-09-11 16:07:53,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:07:53,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 16:07:53,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:07:53,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:07:53,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:07:53,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-11 16:07:53,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:07:53,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:07:53,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779555458] [2020-09-11 16:07:53,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:07:53,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:53,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:07:53,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:07:53,316 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-09-11 16:07:54,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:54,577 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-09-11 16:07:54,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:54,578 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:07:54,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:54,660 INFO L225 Difference]: With dead ends: 28213 [2020-09-11 16:07:54,661 INFO L226 Difference]: Without dead ends: 28186 [2020-09-11 16:07:54,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:07:54,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-09-11 16:07:55,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-09-11 16:07:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-09-11 16:07:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-09-11 16:07:55,121 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-09-11 16:07:55,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:55,121 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-09-11 16:07:55,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:07:55,122 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-09-11 16:07:55,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:55,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:55,126 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:55,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:07:55,327 INFO L427 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]=== [2020-09-11 16:07:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:55,327 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-09-11 16:07:55,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:55,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205377657] [2020-09-11 16:07:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:55,444 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:07:55,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205377657] [2020-09-11 16:07:55,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:07:55,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:07:55,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372214843] [2020-09-11 16:07:55,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:07:55,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:55,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:07:55,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:07:55,446 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-09-11 16:07:56,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:56,665 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-09-11 16:07:56,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:56,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 16:07:56,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:56,744 INFO L225 Difference]: With dead ends: 28226 [2020-09-11 16:07:56,744 INFO L226 Difference]: Without dead ends: 28206 [2020-09-11 16:07:56,744 INFO L675 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 [2020-09-11 16:07:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-09-11 16:07:57,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-09-11 16:07:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-09-11 16:07:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-09-11 16:07:57,161 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-09-11 16:07:57,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:57,162 INFO L479 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-09-11 16:07:57,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:07:57,162 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-09-11 16:07:57,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:57,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:57,165 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:57,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-11 16:07:57,166 INFO L427 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]=== [2020-09-11 16:07:57,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:57,166 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-09-11 16:07:57,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:57,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601796733] [2020-09-11 16:07:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:07:57,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601796733] [2020-09-11 16:07:57,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:07:57,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:07:57,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126619083] [2020-09-11 16:07:57,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:07:57,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:57,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:07:57,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:07:57,282 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-09-11 16:07:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:58,335 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-09-11 16:07:58,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:58,335 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 16:07:58,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:07:58,407 INFO L225 Difference]: With dead ends: 27801 [2020-09-11 16:07:58,407 INFO L226 Difference]: Without dead ends: 27781 [2020-09-11 16:07:58,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 16:07:58,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-09-11 16:07:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-09-11 16:07:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-09-11 16:07:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-09-11 16:07:58,847 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-09-11 16:07:58,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:07:58,847 INFO L479 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-09-11 16:07:58,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:07:58,847 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-09-11 16:07:58,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:07:58,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:07:58,851 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:07:58,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-11 16:07:58,851 INFO L427 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]=== [2020-09-11 16:07:58,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:07:58,851 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-09-11 16:07:58,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:07:58,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058536543] [2020-09-11 16:07:58,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:07:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:07:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:07:58,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058536543] [2020-09-11 16:07:58,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:07:58,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:07:58,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132436715] [2020-09-11 16:07:58,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:07:58,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:07:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:07:58,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:07:58,953 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-09-11 16:07:59,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:07:59,961 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-09-11 16:07:59,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:07:59,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 16:07:59,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:00,033 INFO L225 Difference]: With dead ends: 27548 [2020-09-11 16:08:00,033 INFO L226 Difference]: Without dead ends: 27521 [2020-09-11 16:08:00,034 INFO L675 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 [2020-09-11 16:08:00,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-09-11 16:08:00,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-09-11 16:08:00,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-09-11 16:08:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-09-11 16:08:00,453 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-09-11 16:08:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:00,453 INFO L479 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-09-11 16:08:00,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:08:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-09-11 16:08:00,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:08:00,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:00,457 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:00,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-11 16:08:00,457 INFO L427 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]=== [2020-09-11 16:08:00,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:00,457 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-09-11 16:08:00,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:00,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637171486] [2020-09-11 16:08:00,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:08:00,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637171486] [2020-09-11 16:08:00,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:08:00,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:08:00,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330222217] [2020-09-11 16:08:00,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:08:00,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:00,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:08:00,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:08:00,561 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-09-11 16:08:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:01,642 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-09-11 16:08:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:08:01,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 16:08:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:01,710 INFO L225 Difference]: With dead ends: 27167 [2020-09-11 16:08:01,710 INFO L226 Difference]: Without dead ends: 27147 [2020-09-11 16:08:01,710 INFO L675 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 [2020-09-11 16:08:01,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-09-11 16:08:02,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-09-11 16:08:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-09-11 16:08:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-09-11 16:08:02,248 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-09-11 16:08:02,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:02,248 INFO L479 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-09-11 16:08:02,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:08:02,248 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-09-11 16:08:02,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:08:02,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:02,251 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:02,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-11 16:08:02,252 INFO L427 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]=== [2020-09-11 16:08:02,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:02,252 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-09-11 16:08:02,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:02,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891241621] [2020-09-11 16:08:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:08:02,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891241621] [2020-09-11 16:08:02,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:08:02,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:08:02,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377479604] [2020-09-11 16:08:02,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:08:02,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:02,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:08:02,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:08:02,360 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-09-11 16:08:03,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:03,468 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-09-11 16:08:03,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:08:03,469 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 16:08:03,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:03,537 INFO L225 Difference]: With dead ends: 26955 [2020-09-11 16:08:03,537 INFO L226 Difference]: Without dead ends: 26928 [2020-09-11 16:08:03,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 16:08:03,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-09-11 16:08:03,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-09-11 16:08:03,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-09-11 16:08:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-09-11 16:08:03,939 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-09-11 16:08:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:03,940 INFO L479 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-09-11 16:08:03,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:08:03,940 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-09-11 16:08:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:08:03,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:03,943 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:03,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-11 16:08:03,944 INFO L427 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]=== [2020-09-11 16:08:03,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:03,944 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-09-11 16:08:03,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:03,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221976012] [2020-09-11 16:08:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:08:04,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221976012] [2020-09-11 16:08:04,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:08:04,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:08:04,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359815344] [2020-09-11 16:08:04,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:08:04,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:04,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:08:04,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:08:04,056 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-09-11 16:08:05,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:05,286 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-09-11 16:08:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:08:05,286 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-11 16:08:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:05,360 INFO L225 Difference]: With dead ends: 26632 [2020-09-11 16:08:05,360 INFO L226 Difference]: Without dead ends: 26605 [2020-09-11 16:08:05,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 16:08:05,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-09-11 16:08:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-09-11 16:08:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-09-11 16:08:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-09-11 16:08:05,744 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-09-11 16:08:05,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:05,744 INFO L479 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-09-11 16:08:05,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:08:05,744 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-09-11 16:08:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:08:05,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:05,747 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:05,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-11 16:08:05,748 INFO L427 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]=== [2020-09-11 16:08:05,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:05,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-09-11 16:08:05,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:05,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157086217] [2020-09-11 16:08:05,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-11 16:08:05,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157086217] [2020-09-11 16:08:05,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:08:05,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:08:05,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421145376] [2020-09-11 16:08:05,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:08:05,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:05,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:08:05,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:08:05,811 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-09-11 16:08:05,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:05,997 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-09-11 16:08:05,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:08:05,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-11 16:08:05,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:06,030 INFO L225 Difference]: With dead ends: 11919 [2020-09-11 16:08:06,030 INFO L226 Difference]: Without dead ends: 11887 [2020-09-11 16:08:06,030 INFO L675 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 [2020-09-11 16:08:06,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-09-11 16:08:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-09-11 16:08:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-09-11 16:08:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-09-11 16:08:06,289 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-09-11 16:08:06,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:06,289 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-09-11 16:08:06,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:08:06,289 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-09-11 16:08:06,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-11 16:08:06,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:06,293 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:06,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-11 16:08:06,293 INFO L427 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]=== [2020-09-11 16:08:06,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:06,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-09-11 16:08:06,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:06,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634681494] [2020-09-11 16:08:06,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 16:08:06,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 16:08:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 16:08:06,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 16:08:06,323 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 16:08:06,323 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 16:08:06,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-11 16:08:06,323 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-11 16:08:06,324 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 16:08:06,324 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-11 16:08:06,340 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,341 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,341 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,341 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,341 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,341 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,341 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,342 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,342 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,342 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,342 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,342 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,342 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,342 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,343 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,343 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,343 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,343 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,343 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,343 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,343 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,343 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,344 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,344 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,344 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,344 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,344 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,344 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,344 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,344 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,344 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,344 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,345 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,345 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,345 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,345 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,345 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,345 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,345 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,346 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,346 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,346 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,346 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,346 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,346 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,346 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,346 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,348 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,348 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,348 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,348 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,348 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,348 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,348 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,348 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,350 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,350 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,350 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,350 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,350 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,350 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,351 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,351 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,351 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,352 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,352 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,352 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,352 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,352 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,352 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,353 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,353 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,353 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,353 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,353 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,353 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,354 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,354 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,354 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,354 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,354 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,354 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,355 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,355 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,355 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,356 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,356 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,357 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,357 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,357 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,358 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,358 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,358 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,358 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,359 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,359 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,360 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,360 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,360 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,360 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,361 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,361 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,362 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,362 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,362 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,364 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,364 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,364 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,364 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,364 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,365 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,366 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,366 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,366 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,366 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,366 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,367 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,367 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,367 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,367 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,367 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,368 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,369 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,369 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,369 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,369 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,369 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,369 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,371 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,371 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,371 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,371 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,371 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,371 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,372 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,373 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,377 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,377 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,378 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,378 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 16:08:06,379 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-09-11 16:08:06,379 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 16:08:06,379 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 16:08:06,379 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 16:08:06,379 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 16:08:06,379 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 16:08:06,379 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 16:08:06,379 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 16:08:06,380 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 16:08:06,381 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-09-11 16:08:06,381 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-11 16:08:06,399 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-11 16:08:06,399 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-11 16:08:06,400 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. [2020-09-11 16:08:06,406 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-09-11 16:08:06,425 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-09-11 16:08:06,425 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-11 16:08:06,427 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. [2020-09-11 16:08:06,432 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-09-11 16:08:06,433 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 16:08:08,878 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-09-11 16:08:09,266 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-11 16:08:09,448 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-11 16:08:09,466 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3678 [2020-09-11 16:08:09,466 INFO L214 etLargeBlockEncoding]: Total number of compositions: 113 [2020-09-11 16:08:09,466 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-09-11 16:08:11,117 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-09-11 16:08:11,117 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-09-11 16:08:11,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-11 16:08:11,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:11,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-11 16:08:11,117 INFO L427 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]=== [2020-09-11 16:08:11,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:11,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-09-11 16:08:11,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:11,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581799675] [2020-09-11 16:08:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:08:11,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581799675] [2020-09-11 16:08:11,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:08:11,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 16:08:11,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115397207] [2020-09-11 16:08:11,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 16:08:11,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:11,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 16:08:11,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 16:08:11,146 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-09-11 16:08:11,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:11,313 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-09-11 16:08:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 16:08:11,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-11 16:08:11,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:11,377 INFO L225 Difference]: With dead ends: 17885 [2020-09-11 16:08:11,377 INFO L226 Difference]: Without dead ends: 16791 [2020-09-11 16:08:11,377 INFO L675 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 [2020-09-11 16:08:11,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-09-11 16:08:12,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-09-11 16:08:12,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-09-11 16:08:12,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-09-11 16:08:12,166 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-09-11 16:08:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:12,166 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-09-11 16:08:12,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 16:08:12,166 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-09-11 16:08:12,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 16:08:12,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:12,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:12,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-11 16:08:12,166 INFO L427 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]=== [2020-09-11 16:08:12,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:12,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-09-11 16:08:12,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:12,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651079667] [2020-09-11 16:08:12,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:08:12,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651079667] [2020-09-11 16:08:12,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:08:12,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:08:12,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775583483] [2020-09-11 16:08:12,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:08:12,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:12,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:08:12,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:08:12,211 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-09-11 16:08:12,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:12,512 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-09-11 16:08:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:08:12,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 16:08:12,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:12,609 INFO L225 Difference]: With dead ends: 30985 [2020-09-11 16:08:12,609 INFO L226 Difference]: Without dead ends: 30977 [2020-09-11 16:08:12,609 INFO L675 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 [2020-09-11 16:08:13,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-09-11 16:08:13,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-09-11 16:08:13,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-09-11 16:08:15,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-09-11 16:08:15,964 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-09-11 16:08:15,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:15,964 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-09-11 16:08:15,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:08:15,965 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-09-11 16:08:15,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 16:08:15,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:15,965 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:15,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-11 16:08:15,965 INFO L427 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]=== [2020-09-11 16:08:15,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:15,966 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-09-11 16:08:15,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:15,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921114286] [2020-09-11 16:08:15,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:08:16,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921114286] [2020-09-11 16:08:16,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:08:16,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:08:16,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518128107] [2020-09-11 16:08:16,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:08:16,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:16,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:08:16,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:08:16,014 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-09-11 16:08:16,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:16,348 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-09-11 16:08:16,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:08:16,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 16:08:16,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:16,467 INFO L225 Difference]: With dead ends: 36296 [2020-09-11 16:08:16,467 INFO L226 Difference]: Without dead ends: 36280 [2020-09-11 16:08:16,467 INFO L675 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 [2020-09-11 16:08:17,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-09-11 16:08:17,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-09-11 16:08:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-09-11 16:08:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-09-11 16:08:17,715 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-09-11 16:08:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:17,715 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-09-11 16:08:17,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:08:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-09-11 16:08:17,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 16:08:17,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:17,716 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:17,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-11 16:08:17,716 INFO L427 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]=== [2020-09-11 16:08:17,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:17,717 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-09-11 16:08:17,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:17,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70796106] [2020-09-11 16:08:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:08:17,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70796106] [2020-09-11 16:08:17,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151601578] [2020-09-11 16:08:17,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:08:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:17,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:08:17,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:08:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:08:17,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:08:17,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:08:17,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332166145] [2020-09-11 16:08:17,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:08:17,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:17,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:08:17,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:08:17,985 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-09-11 16:08:18,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:18,785 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-09-11 16:08:18,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:08:18,785 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-09-11 16:08:18,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:19,009 INFO L225 Difference]: With dead ends: 56720 [2020-09-11 16:08:19,009 INFO L226 Difference]: Without dead ends: 56704 [2020-09-11 16:08:19,010 INFO L675 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 [2020-09-11 16:08:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-09-11 16:08:21,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-09-11 16:08:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-09-11 16:08:21,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-09-11 16:08:21,287 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-09-11 16:08:21,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:21,287 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-09-11 16:08:21,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:08:21,287 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-09-11 16:08:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 16:08:21,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:21,287 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:21,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-09-11 16:08:21,488 INFO L427 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]=== [2020-09-11 16:08:21,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:21,489 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-09-11 16:08:21,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:21,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812610249] [2020-09-11 16:08:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:08:21,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812610249] [2020-09-11 16:08:21,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:08:21,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:08:21,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409194955] [2020-09-11 16:08:21,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:08:21,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:21,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:08:21,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:08:21,559 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-09-11 16:08:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:22,294 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-09-11 16:08:22,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:08:22,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 16:08:22,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:22,499 INFO L225 Difference]: With dead ends: 58078 [2020-09-11 16:08:22,499 INFO L226 Difference]: Without dead ends: 58061 [2020-09-11 16:08:22,499 INFO L675 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 [2020-09-11 16:08:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-09-11 16:08:24,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-09-11 16:08:24,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-09-11 16:08:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-09-11 16:08:24,132 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-09-11 16:08:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:24,132 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-09-11 16:08:24,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:08:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-09-11 16:08:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 16:08:24,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:24,133 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:24,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-11 16:08:24,133 INFO L427 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]=== [2020-09-11 16:08:24,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:24,133 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-09-11 16:08:24,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:24,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428407674] [2020-09-11 16:08:24,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:08:24,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428407674] [2020-09-11 16:08:24,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:08:24,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:08:24,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535107435] [2020-09-11 16:08:24,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:08:24,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:24,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:08:24,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:08:24,190 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-09-11 16:08:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:24,553 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-09-11 16:08:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:08:24,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 16:08:24,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:24,686 INFO L225 Difference]: With dead ends: 41885 [2020-09-11 16:08:24,686 INFO L226 Difference]: Without dead ends: 41856 [2020-09-11 16:08:24,687 INFO L675 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 [2020-09-11 16:08:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-09-11 16:08:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-09-11 16:08:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-09-11 16:08:28,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-09-11 16:08:28,081 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-09-11 16:08:28,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:28,081 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-09-11 16:08:28,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:08:28,081 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-09-11 16:08:28,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:08:28,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:28,082 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:28,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-09-11 16:08:28,082 INFO L427 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]=== [2020-09-11 16:08:28,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:28,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-09-11 16:08:28,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:28,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928849487] [2020-09-11 16:08:28,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:08:28,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928849487] [2020-09-11 16:08:28,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462872556] [2020-09-11 16:08:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:08:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:28,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:08:28,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:08:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:08:28,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:08:28,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:08:28,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999466075] [2020-09-11 16:08:28,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:08:28,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:28,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:08:28,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:08:28,303 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-09-11 16:08:29,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:29,068 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-09-11 16:08:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:08:29,069 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-11 16:08:29,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:29,277 INFO L225 Difference]: With dead ends: 66831 [2020-09-11 16:08:29,278 INFO L226 Difference]: Without dead ends: 66807 [2020-09-11 16:08:29,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-11 16:08:30,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-09-11 16:08:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-09-11 16:08:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-09-11 16:08:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-09-11 16:08:31,958 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-09-11 16:08:31,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:31,958 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-09-11 16:08:31,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:08:31,958 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-09-11 16:08:31,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:08:31,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:31,959 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:32,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-09-11 16:08:32,160 INFO L427 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]=== [2020-09-11 16:08:32,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:32,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-09-11 16:08:32,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:32,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459081096] [2020-09-11 16:08:32,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:08:32,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459081096] [2020-09-11 16:08:32,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129386026] [2020-09-11 16:08:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:08:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:32,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:08:32,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:08:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:08:32,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:08:32,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:08:32,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285634160] [2020-09-11 16:08:32,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:08:32,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:32,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:08:32,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:08:32,444 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-09-11 16:08:33,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:33,305 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-09-11 16:08:33,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:08:33,306 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-09-11 16:08:33,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:33,539 INFO L225 Difference]: With dead ends: 69484 [2020-09-11 16:08:33,539 INFO L226 Difference]: Without dead ends: 69451 [2020-09-11 16:08:33,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-11 16:08:34,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-09-11 16:08:35,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-09-11 16:08:35,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-09-11 16:08:35,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-09-11 16:08:35,506 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-09-11 16:08:35,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:35,506 INFO L479 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-09-11 16:08:35,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:08:35,506 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-09-11 16:08:35,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:08:35,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:35,507 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:35,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:08:35,708 INFO L427 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]=== [2020-09-11 16:08:35,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:35,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-09-11 16:08:35,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:35,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808589742] [2020-09-11 16:08:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:08:35,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808589742] [2020-09-11 16:08:35,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:08:35,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:08:35,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632695265] [2020-09-11 16:08:35,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:08:35,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:35,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:08:35,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:08:35,778 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-09-11 16:08:36,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:36,571 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-09-11 16:08:36,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:08:36,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 16:08:36,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:36,800 INFO L225 Difference]: With dead ends: 70510 [2020-09-11 16:08:36,800 INFO L226 Difference]: Without dead ends: 70477 [2020-09-11 16:08:36,800 INFO L675 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 [2020-09-11 16:08:39,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-09-11 16:08:40,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-09-11 16:08:40,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-09-11 16:08:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-09-11 16:08:40,840 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-09-11 16:08:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:40,840 INFO L479 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-09-11 16:08:40,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:08:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-09-11 16:08:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 16:08:40,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:40,841 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:40,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-09-11 16:08:40,841 INFO L427 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]=== [2020-09-11 16:08:40,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:40,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-09-11 16:08:40,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:40,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020061450] [2020-09-11 16:08:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:08:40,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020061450] [2020-09-11 16:08:40,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:08:40,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:08:40,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74739045] [2020-09-11 16:08:40,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:08:40,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:40,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:08:40,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:08:40,921 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-09-11 16:08:41,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:41,680 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-09-11 16:08:41,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:08:41,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 16:08:41,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:41,908 INFO L225 Difference]: With dead ends: 70096 [2020-09-11 16:08:41,908 INFO L226 Difference]: Without dead ends: 70063 [2020-09-11 16:08:41,908 INFO L675 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 [2020-09-11 16:08:42,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-09-11 16:08:44,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-09-11 16:08:44,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-09-11 16:08:44,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-09-11 16:08:44,335 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-09-11 16:08:44,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:44,335 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-09-11 16:08:44,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:08:44,335 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-09-11 16:08:44,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:08:44,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:44,336 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:44,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-09-11 16:08:44,337 INFO L427 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]=== [2020-09-11 16:08:44,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:44,337 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-09-11 16:08:44,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:44,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745797255] [2020-09-11 16:08:44,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:08:44,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745797255] [2020-09-11 16:08:44,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817385077] [2020-09-11 16:08:44,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:08:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:44,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:08:44,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:08:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 16:08:44,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:08:44,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:08:44,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401820523] [2020-09-11 16:08:44,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:08:44,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:44,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:08:44,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:08:44,677 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-09-11 16:08:46,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:46,364 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-09-11 16:08:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:08:46,365 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 16:08:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:46,682 INFO L225 Difference]: With dead ends: 100731 [2020-09-11 16:08:46,682 INFO L226 Difference]: Without dead ends: 100715 [2020-09-11 16:08:46,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:08:47,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-09-11 16:08:51,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-09-11 16:08:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-09-11 16:08:51,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-09-11 16:08:51,842 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-09-11 16:08:51,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:51,842 INFO L479 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-09-11 16:08:51,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:08:51,843 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-09-11 16:08:51,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:08:51,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:51,844 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:52,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-09-11 16:08:52,045 INFO L427 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]=== [2020-09-11 16:08:52,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:52,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-09-11 16:08:52,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:52,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590777860] [2020-09-11 16:08:52,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:08:52,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590777860] [2020-09-11 16:08:52,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314772179] [2020-09-11 16:08:52,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:08:52,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 16:08:52,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:08:52,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:08:52,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:08:52,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:08:52,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:08:52,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:08:52,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455091835] [2020-09-11 16:08:52,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:08:52,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:52,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:08:52,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:08:52,400 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-09-11 16:08:54,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:54,171 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-09-11 16:08:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:08:54,172 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 16:08:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:54,496 INFO L225 Difference]: With dead ends: 99876 [2020-09-11 16:08:54,496 INFO L226 Difference]: Without dead ends: 99855 [2020-09-11 16:08:54,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:08:56,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-09-11 16:08:57,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-09-11 16:08:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-09-11 16:08:57,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-09-11 16:08:57,373 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-09-11 16:08:57,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:08:57,373 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-09-11 16:08:57,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:08:57,374 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-09-11 16:08:57,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:08:57,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:08:57,375 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:08:57,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:08:57,576 INFO L427 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]=== [2020-09-11 16:08:57,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:08:57,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-09-11 16:08:57,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:08:57,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578965788] [2020-09-11 16:08:57,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:08:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:08:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:08:57,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578965788] [2020-09-11 16:08:57,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447966939] [2020-09-11 16:08:57,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:08:57,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-11 16:08:57,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:08:57,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:08:57,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:08:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:08:57,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:08:57,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:08:57,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431569109] [2020-09-11 16:08:57,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:08:57,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:08:57,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:08:57,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:08:57,926 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-09-11 16:08:59,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:08:59,682 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-09-11 16:08:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:08:59,683 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 16:08:59,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:08:59,988 INFO L225 Difference]: With dead ends: 100071 [2020-09-11 16:08:59,988 INFO L226 Difference]: Without dead ends: 100055 [2020-09-11 16:08:59,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:09:03,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-09-11 16:09:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-09-11 16:09:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-09-11 16:09:04,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-09-11 16:09:04,794 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-09-11 16:09:04,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:09:04,794 INFO L479 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-09-11 16:09:04,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:09:04,794 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-09-11 16:09:04,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:09:04,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:09:04,795 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:09:04,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-09-11 16:09:04,996 INFO L427 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]=== [2020-09-11 16:09:04,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:09:04,996 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-09-11 16:09:04,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:09:04,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058437700] [2020-09-11 16:09:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:09:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:09:05,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058437700] [2020-09-11 16:09:05,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295998808] [2020-09-11 16:09:05,097 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:09:05,213 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-11 16:09:05,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:09:05,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:09:05,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:09:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 16:09:05,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:09:05,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:09:05,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735005075] [2020-09-11 16:09:05,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:09:05,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:09:05,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:09:05,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:09:05,352 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-09-11 16:09:07,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:09:07,544 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-09-11 16:09:07,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:09:07,545 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-09-11 16:09:07,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:09:07,857 INFO L225 Difference]: With dead ends: 99523 [2020-09-11 16:09:07,857 INFO L226 Difference]: Without dead ends: 99502 [2020-09-11 16:09:07,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:09:08,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-09-11 16:09:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-09-11 16:09:09,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-09-11 16:09:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-09-11 16:09:10,026 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-09-11 16:09:10,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:09:10,026 INFO L479 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-09-11 16:09:10,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:09:10,026 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-09-11 16:09:10,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:09:10,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:09:10,027 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:09:10,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-09-11 16:09:10,228 INFO L427 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]=== [2020-09-11 16:09:10,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:09:10,229 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-09-11 16:09:10,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:09:10,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846711327] [2020-09-11 16:09:10,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:09:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:09:10,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846711327] [2020-09-11 16:09:10,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:09:10,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:09:10,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569426515] [2020-09-11 16:09:10,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:09:10,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:09:10,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:09:10,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:09:10,330 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-09-11 16:09:12,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:09:12,401 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-09-11 16:09:12,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:09:12,402 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 16:09:12,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:09:12,710 INFO L225 Difference]: With dead ends: 99710 [2020-09-11 16:09:12,710 INFO L226 Difference]: Without dead ends: 99694 [2020-09-11 16:09:12,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-11 16:09:13,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-09-11 16:09:17,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-09-11 16:09:17,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-09-11 16:09:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-09-11 16:09:17,770 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-09-11 16:09:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:09:17,770 INFO L479 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-09-11 16:09:17,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:09:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-09-11 16:09:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:09:17,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:09:17,771 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:09:17,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-09-11 16:09:17,771 INFO L427 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]=== [2020-09-11 16:09:17,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:09:17,772 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-09-11 16:09:17,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:09:17,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510690946] [2020-09-11 16:09:17,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:09:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:09:17,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510690946] [2020-09-11 16:09:17,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:09:17,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-11 16:09:17,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737937702] [2020-09-11 16:09:17,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 16:09:17,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:09:17,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 16:09:17,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-11 16:09:17,870 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-09-11 16:09:19,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:09:19,465 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-09-11 16:09:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:09:19,466 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-11 16:09:19,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:09:19,768 INFO L225 Difference]: With dead ends: 98863 [2020-09-11 16:09:19,768 INFO L226 Difference]: Without dead ends: 98841 [2020-09-11 16:09:19,768 INFO L675 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 [2020-09-11 16:09:20,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-09-11 16:09:22,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-09-11 16:09:22,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-09-11 16:09:22,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-09-11 16:09:22,519 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-09-11 16:09:22,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:09:22,519 INFO L479 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-09-11 16:09:22,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 16:09:22,519 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-09-11 16:09:22,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 16:09:22,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:09:22,521 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:09:22,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-09-11 16:09:22,521 INFO L427 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]=== [2020-09-11 16:09:22,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:09:22,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-09-11 16:09:22,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:09:22,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537319126] [2020-09-11 16:09:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:09:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:09:22,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537319126] [2020-09-11 16:09:22,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:09:22,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 16:09:22,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185467800] [2020-09-11 16:09:22,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 16:09:22,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:09:22,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 16:09:22,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 16:09:22,578 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-09-11 16:09:22,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:09:22,973 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-09-11 16:09:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 16:09:22,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-11 16:09:22,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:09:23,122 INFO L225 Difference]: With dead ends: 46463 [2020-09-11 16:09:23,123 INFO L226 Difference]: Without dead ends: 46417 [2020-09-11 16:09:23,123 INFO L675 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 [2020-09-11 16:09:23,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-09-11 16:09:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-09-11 16:09:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-09-11 16:09:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-09-11 16:09:24,591 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-09-11 16:09:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:09:24,592 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-09-11 16:09:24,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 16:09:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-09-11 16:09:24,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:09:24,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:09:24,593 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:09:24,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-09-11 16:09:24,594 INFO L427 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]=== [2020-09-11 16:09:24,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:09:24,594 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-09-11 16:09:24,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:09:24,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634779491] [2020-09-11 16:09:24,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:09:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:09:24,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634779491] [2020-09-11 16:09:24,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455822095] [2020-09-11 16:09:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:09:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:24,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:09:24,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:09:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:09:24,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:09:24,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:09:24,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198889576] [2020-09-11 16:09:24,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:09:24,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:09:24,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:09:24,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:09:24,880 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-09-11 16:09:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:09:26,239 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-09-11 16:09:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:09:26,240 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-11 16:09:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:09:26,500 INFO L225 Difference]: With dead ends: 75380 [2020-09-11 16:09:26,500 INFO L226 Difference]: Without dead ends: 75344 [2020-09-11 16:09:26,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-11 16:09:27,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-09-11 16:09:28,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-09-11 16:09:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-09-11 16:09:28,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-09-11 16:09:28,492 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-09-11 16:09:28,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:09:28,492 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-09-11 16:09:28,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:09:28,493 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-09-11 16:09:28,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:09:28,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:09:28,495 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:09:28,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:09:28,695 INFO L427 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]=== [2020-09-11 16:09:28,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:09:28,696 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-09-11 16:09:28,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:09:28,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436183340] [2020-09-11 16:09:28,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:09:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 16:09:28,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436183340] [2020-09-11 16:09:28,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979589568] [2020-09-11 16:09:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:09:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:28,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:09:28,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:09:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-11 16:09:28,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:09:28,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:09:28,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898638520] [2020-09-11 16:09:28,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:09:28,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:09:28,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:09:28,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:09:28,983 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-09-11 16:09:30,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:09:30,210 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-09-11 16:09:30,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:09:30,211 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-11 16:09:30,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:09:30,478 INFO L225 Difference]: With dead ends: 79487 [2020-09-11 16:09:30,479 INFO L226 Difference]: Without dead ends: 79445 [2020-09-11 16:09:30,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-11 16:09:31,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-09-11 16:09:32,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-09-11 16:09:32,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-09-11 16:09:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-09-11 16:09:32,487 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-09-11 16:09:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:09:32,487 INFO L479 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-09-11 16:09:32,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:09:32,488 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-09-11 16:09:32,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:09:32,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:09:32,490 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:09:32,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:09:32,690 INFO L427 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]=== [2020-09-11 16:09:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:09:32,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-09-11 16:09:32,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:09:32,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814268147] [2020-09-11 16:09:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:09:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:09:32,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814268147] [2020-09-11 16:09:32,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570771481] [2020-09-11 16:09:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:09:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:32,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-11 16:09:32,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:09:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-11 16:09:32,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:09:32,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-09-11 16:09:32,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307871876] [2020-09-11 16:09:32,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-11 16:09:32,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:09:32,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-11 16:09:32,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-11 16:09:32,967 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-09-11 16:09:34,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:09:34,277 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-09-11 16:09:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:09:34,278 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-09-11 16:09:34,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:09:34,557 INFO L225 Difference]: With dead ends: 82728 [2020-09-11 16:09:34,557 INFO L226 Difference]: Without dead ends: 82673 [2020-09-11 16:09:34,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-09-11 16:09:35,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-09-11 16:09:36,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-09-11 16:09:36,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-09-11 16:09:36,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-09-11 16:09:36,628 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-09-11 16:09:36,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:09:36,628 INFO L479 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-09-11 16:09:36,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-11 16:09:36,629 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-09-11 16:09:36,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:09:36,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:09:36,631 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:09:36,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:09:36,831 INFO L427 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]=== [2020-09-11 16:09:36,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:09:36,832 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-09-11 16:09:36,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:09:36,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321601559] [2020-09-11 16:09:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:09:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:09:36,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321601559] [2020-09-11 16:09:36,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:09:36,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:09:36,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659549457] [2020-09-11 16:09:36,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:09:36,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:09:36,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:09:36,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:09:36,916 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-09-11 16:09:38,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:09:38,244 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-09-11 16:09:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:09:38,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 16:09:38,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:09:38,527 INFO L225 Difference]: With dead ends: 83507 [2020-09-11 16:09:38,527 INFO L226 Difference]: Without dead ends: 83452 [2020-09-11 16:09:38,528 INFO L675 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 [2020-09-11 16:09:39,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-09-11 16:09:40,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-09-11 16:09:40,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-09-11 16:09:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-09-11 16:09:40,577 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-09-11 16:09:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:09:40,577 INFO L479 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-09-11 16:09:40,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:09:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-09-11 16:09:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:09:40,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:09:40,580 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:09:40,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-09-11 16:09:40,580 INFO L427 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]=== [2020-09-11 16:09:40,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:09:40,580 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-09-11 16:09:40,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:09:40,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220625622] [2020-09-11 16:09:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:09:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:09:40,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220625622] [2020-09-11 16:09:40,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:09:40,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:09:40,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706654605] [2020-09-11 16:09:40,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:09:40,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:09:40,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:09:40,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:09:40,660 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-09-11 16:09:41,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:09:41,520 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-09-11 16:09:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:09:41,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 16:09:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:09:42,373 INFO L225 Difference]: With dead ends: 83523 [2020-09-11 16:09:42,373 INFO L226 Difference]: Without dead ends: 83468 [2020-09-11 16:09:42,373 INFO L675 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 [2020-09-11 16:09:43,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-09-11 16:09:44,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-09-11 16:09:44,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-09-11 16:09:44,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-09-11 16:09:44,316 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-09-11 16:09:44,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:09:44,316 INFO L479 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-09-11 16:09:44,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:09:44,317 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-09-11 16:09:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-11 16:09:44,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:09:44,319 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:09:44,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-09-11 16:09:44,319 INFO L427 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]=== [2020-09-11 16:09:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:09:44,319 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-09-11 16:09:44,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:09:44,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872841878] [2020-09-11 16:09:44,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:09:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-11 16:09:44,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872841878] [2020-09-11 16:09:44,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 16:09:44,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 16:09:44,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117614954] [2020-09-11 16:09:44,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 16:09:44,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:09:44,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 16:09:44,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-11 16:09:44,393 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-09-11 16:09:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:09:45,175 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-09-11 16:09:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-11 16:09:45,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-11 16:09:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:09:45,424 INFO L225 Difference]: With dead ends: 83918 [2020-09-11 16:09:45,424 INFO L226 Difference]: Without dead ends: 83863 [2020-09-11 16:09:45,424 INFO L675 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 [2020-09-11 16:09:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-09-11 16:09:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-09-11 16:09:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-09-11 16:09:47,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-09-11 16:09:47,890 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-09-11 16:09:47,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:09:47,890 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-09-11 16:09:47,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 16:09:47,890 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-09-11 16:09:47,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:09:47,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:09:47,893 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:09:47,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-09-11 16:09:47,893 INFO L427 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]=== [2020-09-11 16:09:47,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:09:47,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-09-11 16:09:47,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:09:47,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191627878] [2020-09-11 16:09:47,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:09:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:09:47,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191627878] [2020-09-11 16:09:47,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048624054] [2020-09-11 16:09:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:09:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:48,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:09:48,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:09:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:09:48,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:09:48,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:09:48,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426583797] [2020-09-11 16:09:48,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:09:48,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:09:48,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:09:48,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:09:48,232 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-09-11 16:09:50,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:09:50,147 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-09-11 16:09:50,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:09:50,148 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:09:50,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:09:51,216 INFO L225 Difference]: With dead ends: 122892 [2020-09-11 16:09:51,216 INFO L226 Difference]: Without dead ends: 122862 [2020-09-11 16:09:51,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:09:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-09-11 16:09:53,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-09-11 16:09:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-09-11 16:09:53,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-09-11 16:09:53,764 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-09-11 16:09:53,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:09:53,764 INFO L479 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-09-11 16:09:53,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:09:53,765 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-09-11 16:09:53,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:09:53,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:09:53,768 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:09:53,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-09-11 16:09:53,968 INFO L427 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]=== [2020-09-11 16:09:53,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:09:53,969 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-09-11 16:09:53,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:09:53,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989746453] [2020-09-11 16:09:53,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:09:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:09:54,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989746453] [2020-09-11 16:09:54,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555074914] [2020-09-11 16:09:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:09:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:09:54,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:09:54,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:09:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-11 16:09:54,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:09:54,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:09:54,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127527955] [2020-09-11 16:09:54,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:09:54,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:09:54,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:09:54,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:09:54,318 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-09-11 16:09:56,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:09:56,511 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-09-11 16:09:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:09:56,512 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:09:56,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:09:56,867 INFO L225 Difference]: With dead ends: 121590 [2020-09-11 16:09:56,867 INFO L226 Difference]: Without dead ends: 121560 [2020-09-11 16:09:56,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:09:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-09-11 16:10:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-09-11 16:10:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-09-11 16:10:02,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-09-11 16:10:02,505 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-09-11 16:10:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 16:10:02,506 INFO L479 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-09-11 16:10:02,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-11 16:10:02,506 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-09-11 16:10:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-11 16:10:02,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 16:10:02,509 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 16:10:02,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 16:10:02,716 INFO L427 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]=== [2020-09-11 16:10:02,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 16:10:02,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-09-11 16:10:02,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 16:10:02,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866188680] [2020-09-11 16:10:02,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 16:10:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 16:10:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:10:02,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866188680] [2020-09-11 16:10:02,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212173232] [2020-09-11 16:10:02,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 16:10:02,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 16:10:02,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 16:10:02,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-11 16:10:02,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 16:10:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-11 16:10:03,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 16:10:03,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-09-11 16:10:03,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992511232] [2020-09-11 16:10:03,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-11 16:10:03,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 16:10:03,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-11 16:10:03,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-11 16:10:03,055 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-09-11 16:10:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 16:10:04,761 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-09-11 16:10:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-11 16:10:04,762 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-09-11 16:10:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 16:10:05,095 INFO L225 Difference]: With dead ends: 120395 [2020-09-11 16:10:05,095 INFO L226 Difference]: Without dead ends: 120362 [2020-09-11 16:10:05,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-09-11 16:10:06,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. Received shutdown request... [2020-09-11 16:10:07,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-09-11 16:10:07,539 WARN L544 AbstractCegarLoop]: Verification canceled [2020-09-11 16:10:07,544 WARN L228 ceAbstractionStarter]: Timeout [2020-09-11 16:10:07,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 04:10:07 BasicIcfg [2020-09-11 16:10:07,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 16:10:07,547 INFO L168 Benchmark]: Toolchain (without parser) took 223954.93 ms. Allocated memory was 141.0 MB in the beginning and 3.0 GB in the end (delta: 2.9 GB). Free memory was 102.3 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-09-11 16:10:07,547 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-11 16:10:07,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 812.84 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 162.7 MB in the end (delta: -60.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-11 16:10:07,548 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.13 ms. Allocated memory is still 203.9 MB. Free memory was 162.7 MB in the beginning and 160.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-11 16:10:07,548 INFO L168 Benchmark]: Boogie Preprocessor took 33.16 ms. Allocated memory is still 203.9 MB. Free memory was 160.8 MB in the beginning and 158.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-09-11 16:10:07,549 INFO L168 Benchmark]: RCFGBuilder took 436.86 ms. Allocated memory is still 203.9 MB. Free memory was 158.9 MB in the beginning and 139.4 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-09-11 16:10:07,549 INFO L168 Benchmark]: TraceAbstraction took 222604.53 ms. Allocated memory was 203.9 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 138.5 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-09-11 16:10:07,551 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 812.84 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 162.7 MB in the end (delta: -60.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.13 ms. Allocated memory is still 203.9 MB. Free memory was 162.7 MB in the beginning and 160.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.16 ms. Allocated memory is still 203.9 MB. Free memory was 160.8 MB in the beginning and 158.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 436.86 ms. Allocated memory is still 203.9 MB. Free memory was 158.9 MB in the beginning and 139.4 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222604.53 ms. Allocated memory was 203.9 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 138.5 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 61 ProgramPointsBefore, 18 ProgramPointsAfterwards, 58 TransitionsBefore, 12 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 7 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 304 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 3 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 486 CheckedPairsTotal, 51 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 80 ProgramPointsBefore, 31 ProgramPointsAfterwards, 74 TransitionsBefore, 21 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 3 ConcurrentYvCompositions, 4 ChoiceCompositions, 472 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 942 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 99 ProgramPointsBefore, 41 ProgramPointsAfterwards, 90 TransitionsBefore, 27 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 3 ConcurrentYvCompositions, 5 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1426 CheckedPairsTotal, 74 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.6s, 118 ProgramPointsBefore, 51 ProgramPointsAfterwards, 106 TransitionsBefore, 33 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 7 FixpointIterations, 47 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 840 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 2033 CheckedPairsTotal, 86 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.6s, 137 ProgramPointsBefore, 61 ProgramPointsAfterwards, 122 TransitionsBefore, 39 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 3 ConcurrentYvCompositions, 7 ChoiceCompositions, 1058 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 2999 CheckedPairsTotal, 104 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.0s, 156 ProgramPointsBefore, 71 ProgramPointsAfterwards, 138 TransitionsBefore, 45 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 6 FixpointIterations, 66 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 1407 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 3678 CheckedPairsTotal, 113 TotalNumberOfCompositions - 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 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 222.2s, OverallIterations: 101, TraceHistogramMax: 6, AutomataDifference: 86.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 16.8s, HoareTripleCheckerStatistics: 4387 SDtfs, 23240 SDslu, 15422 SDs, 0 SdLazy, 29087 SolverSat, 2081 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2580 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 1953 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13018 ImplicationChecksByTransitivity, 26.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37062occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 91.3s AutomataMinimizationTime, 96 MinimizatonAttempts, 1833887 StatesRemovedByMinimization, 88 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 2845 NumberOfCodeBlocks, 2817 NumberOfCodeBlocksAsserted, 165 NumberOfCheckSat, 2618 ConstructedInterpolants, 0 QuantifiedInterpolants, 348132 SizeOfPredicates, 226 NumberOfNonLiveVariables, 4798 ConjunctsInSsa, 355 ConjunctsInUnsatCore, 139 InterpolantComputations, 53 PerfectInterpolantSequences, 848/1508 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