/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:14:40,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:14:40,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:14:40,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:14:40,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:14:40,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:14:40,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:14:40,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:14:40,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:14:40,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:14:40,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:14:40,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:14:40,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:14:40,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:14:40,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:14:40,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:14:40,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:14:40,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:14:40,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:14:40,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:14:40,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:14:40,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:14:40,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:14:40,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:14:40,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 01:14:40,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:14:40,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:14:40,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:14:40,564 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 01:14:40,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:14:40,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:14:40,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:14:40,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:14:40,590 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:14:40,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:14:40,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:14:40,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:14:40,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:14:40,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:14:40,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:14:40,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:14:40,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:14:40,591 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:14:40,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:14:40,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:14:40,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:14:40,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:14:40,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:14:40,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:14:40,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:14:40,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:14:40,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:14:40,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:14:40,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:14:40,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:14:40,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:14:40,595 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:14:40,595 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:14:40,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:14:40,595 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:14:40,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:14:40,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:14:40,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:14:40,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:14:40,931 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:14:40,932 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-10-06 01:14:40,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/806d4f961/56798d63712641d6a3a9862c81f4c86e/FLAG89a46c6f3 [2020-10-06 01:14:41,528 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:14:41,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-10-06 01:14:41,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/806d4f961/56798d63712641d6a3a9862c81f4c86e/FLAG89a46c6f3 [2020-10-06 01:14:41,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/806d4f961/56798d63712641d6a3a9862c81f4c86e [2020-10-06 01:14:41,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:14:41,794 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:14:41,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:14:41,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:14:41,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:14:41,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:14:41" (1/1) ... [2020-10-06 01:14:41,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f8a2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:14:41, skipping insertion in model container [2020-10-06 01:14:41,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:14:41" (1/1) ... [2020-10-06 01:14:41,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:14:41,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:14:42,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:14:42,319 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:14:42,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:14:42,447 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:14:42,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:14:42 WrapperNode [2020-10-06 01:14:42,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:14:42,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:14:42,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:14:42,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:14:42,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:14:42" (1/1) ... [2020-10-06 01:14:42,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:14:42" (1/1) ... [2020-10-06 01:14:42,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:14:42,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:14:42,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:14:42,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:14:42,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:14:42" (1/1) ... [2020-10-06 01:14:42,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:14:42" (1/1) ... [2020-10-06 01:14:42,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:14:42" (1/1) ... [2020-10-06 01:14:42,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:14:42" (1/1) ... [2020-10-06 01:14:42,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:14:42" (1/1) ... [2020-10-06 01:14:42,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:14:42" (1/1) ... [2020-10-06 01:14:42,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:14:42" (1/1) ... [2020-10-06 01:14:42,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:14:42,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:14:42,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:14:42,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:14:42,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:14:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:14:42,619 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-06 01:14:42,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-06 01:14:42,620 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-06 01:14:42,620 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-06 01:14:42,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:14:42,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:14:42,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:14:42,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:14:42,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:14:42,623 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:14:42,969 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:14:42,970 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-06 01:14:42,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:14:42 BoogieIcfgContainer [2020-10-06 01:14:42,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:14:42,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:14:42,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:14:42,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:14:42,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:14:41" (1/3) ... [2020-10-06 01:14:42,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8f1d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:14:42, skipping insertion in model container [2020-10-06 01:14:42,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:14:42" (2/3) ... [2020-10-06 01:14:42,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8f1d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:14:42, skipping insertion in model container [2020-10-06 01:14:42,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:14:42" (3/3) ... [2020-10-06 01:14:42,982 INFO L109 eAbstractionObserver]: Analyzing ICFG fkp2013-2.i [2020-10-06 01:14:42,993 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:14:42,994 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:14:43,000 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:14:43,002 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:14:43,031 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,032 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,032 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,032 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,033 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,033 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,034 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,034 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,034 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,037 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,037 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,042 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,043 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,044 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:43,070 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:14:43,090 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:14:43,090 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:14:43,090 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:14:43,090 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:14:43,090 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:14:43,091 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:14:43,091 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:14:43,091 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:14:43,107 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 112 flow [2020-10-06 01:14:43,110 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-10-06 01:14:43,151 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-10-06 01:14:43,152 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:14:43,158 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-10-06 01:14:43,161 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-10-06 01:14:43,182 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-10-06 01:14:43,182 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:14:43,183 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-10-06 01:14:43,185 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 692 [2020-10-06 01:14:43,186 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:14:44,320 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-06 01:14:44,390 INFO L206 etLargeBlockEncoding]: Checked pairs total: 576 [2020-10-06 01:14:44,390 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2020-10-06 01:14:44,394 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-06 01:14:44,406 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-06 01:14:44,408 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-06 01:14:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-06 01:14:44,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:44,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-06 01:14:44,416 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 01:14:44,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:44,422 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 1 times [2020-10-06 01:14:44,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:44,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123451668] [2020-10-06 01:14:44,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:44,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123451668] [2020-10-06 01:14:44,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:44,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:14:44,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [202600088] [2020-10-06 01:14:44,652 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:44,656 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:44,678 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-06 01:14:44,679 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:44,682 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:44,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:14:44,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:44,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:14:44,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:14:44,696 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-06 01:14:44,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:44,729 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-06 01:14:44,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:14:44,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-06 01:14:44,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:44,742 INFO L225 Difference]: With dead ends: 35 [2020-10-06 01:14:44,742 INFO L226 Difference]: Without dead ends: 31 [2020-10-06 01:14:44,743 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 [2020-10-06 01:14:44,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-06 01:14:44,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-06 01:14:44,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-06 01:14:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-06 01:14:44,784 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-06 01:14:44,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:44,784 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-06 01:14:44,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:14:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-06 01:14:44,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-06 01:14:44,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:44,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:44,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:14:44,786 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 01:14:44,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:44,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 1 times [2020-10-06 01:14:44,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:44,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007527213] [2020-10-06 01:14:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:44,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007527213] [2020-10-06 01:14:44,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:44,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:14:44,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2096870201] [2020-10-06 01:14:44,855 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:44,856 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:44,859 INFO L258 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-06 01:14:44,860 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:44,860 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:44,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:14:44,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:44,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:14:44,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:14:44,863 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-06 01:14:44,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:44,878 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-06 01:14:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:14:44,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-06 01:14:44,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:44,879 INFO L225 Difference]: With dead ends: 26 [2020-10-06 01:14:44,880 INFO L226 Difference]: Without dead ends: 24 [2020-10-06 01:14:44,880 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 [2020-10-06 01:14:44,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-06 01:14:44,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-06 01:14:44,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-06 01:14:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-06 01:14:44,886 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-06 01:14:44,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:44,886 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-06 01:14:44,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:14:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-06 01:14:44,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:14:44,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:44,887 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:44,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:14:44,888 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 01:14:44,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:44,888 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 1 times [2020-10-06 01:14:44,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:44,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561552251] [2020-10-06 01:14:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 01:14:44,916 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 01:14:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 01:14:44,931 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 01:14:44,955 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 01:14:44,955 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 01:14:44,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:14:44,957 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 01:14:44,957 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-06 01:14:44,966 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,966 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,966 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,967 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,968 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,968 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,968 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,968 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,968 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,969 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,969 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,969 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,969 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,969 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,975 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,975 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,975 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,976 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,976 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,977 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,977 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,978 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,978 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,978 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,980 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,980 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,980 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,980 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,981 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,981 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,983 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,983 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,983 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,984 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:44,985 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-06 01:14:44,985 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:14:44,986 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:14:44,986 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:14:44,986 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:14:44,986 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:14:44,986 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:14:44,986 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:14:44,986 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:14:44,989 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-06 01:14:44,990 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-10-06 01:14:45,009 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-10-06 01:14:45,010 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-06 01:14:45,011 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-10-06 01:14:45,014 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-10-06 01:14:45,035 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-10-06 01:14:45,035 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-06 01:14:45,040 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-10-06 01:14:45,042 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1108 [2020-10-06 01:14:45,042 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:14:46,074 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-06 01:14:46,140 INFO L206 etLargeBlockEncoding]: Checked pairs total: 964 [2020-10-06 01:14:46,140 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-10-06 01:14:46,140 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-06 01:14:46,152 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-06 01:14:46,152 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-06 01:14:46,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-06 01:14:46,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:46,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-06 01:14:46,153 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:14:46,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:46,154 INFO L82 PathProgramCache]: Analyzing trace with hash 354555, now seen corresponding path program 1 times [2020-10-06 01:14:46,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:46,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996204191] [2020-10-06 01:14:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:46,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996204191] [2020-10-06 01:14:46,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:46,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:14:46,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2090080720] [2020-10-06 01:14:46,185 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:46,186 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:46,187 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-06 01:14:46,187 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:46,187 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:46,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:14:46,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:46,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:14:46,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:14:46,188 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-06 01:14:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:46,216 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-06 01:14:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:14:46,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-06 01:14:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:46,222 INFO L225 Difference]: With dead ends: 185 [2020-10-06 01:14:46,222 INFO L226 Difference]: Without dead ends: 171 [2020-10-06 01:14:46,223 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 [2020-10-06 01:14:46,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-06 01:14:46,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-06 01:14:46,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-06 01:14:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-06 01:14:46,248 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-06 01:14:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:46,249 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-06 01:14:46,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:14:46,249 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-06 01:14:46,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:14:46,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:46,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:46,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:14:46,250 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:14:46,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:46,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1106209149, now seen corresponding path program 1 times [2020-10-06 01:14:46,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:46,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268867918] [2020-10-06 01:14:46,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:46,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268867918] [2020-10-06 01:14:46,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:46,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:14:46,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [734766722] [2020-10-06 01:14:46,319 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:46,320 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:46,322 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-06 01:14:46,322 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:46,322 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:46,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:14:46,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:46,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:14:46,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:14:46,324 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-06 01:14:46,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:46,379 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-06 01:14:46,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:14:46,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-06 01:14:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:46,383 INFO L225 Difference]: With dead ends: 205 [2020-10-06 01:14:46,383 INFO L226 Difference]: Without dead ends: 201 [2020-10-06 01:14:46,383 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 [2020-10-06 01:14:46,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-06 01:14:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-06 01:14:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-06 01:14:46,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-06 01:14:46,403 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-06 01:14:46,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:46,403 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-06 01:14:46,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:14:46,404 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-06 01:14:46,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 01:14:46,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:46,405 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:46,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:14:46,406 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:14:46,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:46,406 INFO L82 PathProgramCache]: Analyzing trace with hash 583411714, now seen corresponding path program 1 times [2020-10-06 01:14:46,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:46,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272544558] [2020-10-06 01:14:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:14:46,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272544558] [2020-10-06 01:14:46,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:46,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:14:46,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [409452966] [2020-10-06 01:14:46,462 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:46,464 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:46,466 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-06 01:14:46,467 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:46,467 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:46,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:14:46,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:46,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:14:46,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:14:46,468 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-06 01:14:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:46,539 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-06 01:14:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:14:46,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-06 01:14:46,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:46,544 INFO L225 Difference]: With dead ends: 189 [2020-10-06 01:14:46,544 INFO L226 Difference]: Without dead ends: 185 [2020-10-06 01:14:46,545 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 [2020-10-06 01:14:46,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-06 01:14:46,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-06 01:14:46,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-06 01:14:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-06 01:14:46,558 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-06 01:14:46,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:46,559 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-06 01:14:46,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:14:46,560 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-06 01:14:46,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 01:14:46,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:46,561 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:46,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-06 01:14:46,562 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:14:46,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:46,562 INFO L82 PathProgramCache]: Analyzing trace with hash 903154619, now seen corresponding path program 1 times [2020-10-06 01:14:46,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:46,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874654486] [2020-10-06 01:14:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 01:14:46,577 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 01:14:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 01:14:46,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 01:14:46,598 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 01:14:46,598 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 01:14:46,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-06 01:14:46,599 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 01:14:46,601 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-06 01:14:46,611 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,611 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,612 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,612 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,612 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,612 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,612 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,613 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,613 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,613 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,613 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,613 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,613 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,614 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,614 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,614 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,614 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,614 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,615 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,615 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,615 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,615 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,615 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,615 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,618 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,618 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,618 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,619 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,619 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,619 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,619 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,619 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,619 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,621 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,621 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,621 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,621 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,621 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,622 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,622 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,622 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,622 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,622 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,623 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,623 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,623 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,623 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,624 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,625 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,626 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,626 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,626 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,626 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,627 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,628 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,628 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,628 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,628 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,629 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,630 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,630 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,630 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,630 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,630 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,633 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,634 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,634 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,634 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,634 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,635 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,635 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:46,637 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-06 01:14:46,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:14:46,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:14:46,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:14:46,637 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:14:46,638 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:14:46,638 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:14:46,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:14:46,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:14:46,641 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 87 transitions, 216 flow [2020-10-06 01:14:46,642 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-10-06 01:14:46,677 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-10-06 01:14:46,677 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-06 01:14:46,680 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-10-06 01:14:46,685 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-10-06 01:14:46,712 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-10-06 01:14:46,713 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-06 01:14:46,721 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-10-06 01:14:46,726 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1608 [2020-10-06 01:14:46,726 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:14:48,011 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-06 01:14:48,172 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1796 [2020-10-06 01:14:48,172 INFO L214 etLargeBlockEncoding]: Total number of compositions: 73 [2020-10-06 01:14:48,172 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-06 01:14:48,201 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-06 01:14:48,202 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-06 01:14:48,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-06 01:14:48,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:48,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-06 01:14:48,203 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:14:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:48,203 INFO L82 PathProgramCache]: Analyzing trace with hash 535749, now seen corresponding path program 1 times [2020-10-06 01:14:48,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:48,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172406187] [2020-10-06 01:14:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:48,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172406187] [2020-10-06 01:14:48,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:48,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:14:48,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2064446879] [2020-10-06 01:14:48,258 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:48,259 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:48,259 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-06 01:14:48,260 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:48,260 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:48,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:14:48,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:48,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:14:48,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:14:48,261 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-06 01:14:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:48,304 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-06 01:14:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:14:48,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-06 01:14:48,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:48,311 INFO L225 Difference]: With dead ends: 600 [2020-10-06 01:14:48,311 INFO L226 Difference]: Without dead ends: 559 [2020-10-06 01:14:48,311 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 [2020-10-06 01:14:48,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-06 01:14:48,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-06 01:14:48,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-06 01:14:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-06 01:14:48,365 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-06 01:14:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:48,365 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-06 01:14:48,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:14:48,365 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-06 01:14:48,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:14:48,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:48,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:48,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-06 01:14:48,366 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:14:48,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:48,367 INFO L82 PathProgramCache]: Analyzing trace with hash -404806880, now seen corresponding path program 1 times [2020-10-06 01:14:48,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:48,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384867919] [2020-10-06 01:14:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:48,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384867919] [2020-10-06 01:14:48,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:48,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:14:48,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2034368976] [2020-10-06 01:14:48,405 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:48,406 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:48,407 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-06 01:14:48,407 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:48,408 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:48,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:14:48,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:48,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:14:48,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:14:48,409 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-06 01:14:48,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:48,478 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-06 01:14:48,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:14:48,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-06 01:14:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:48,485 INFO L225 Difference]: With dead ends: 817 [2020-10-06 01:14:48,485 INFO L226 Difference]: Without dead ends: 812 [2020-10-06 01:14:48,486 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 [2020-10-06 01:14:48,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-06 01:14:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-06 01:14:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-06 01:14:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-06 01:14:48,514 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-06 01:14:48,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:48,515 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-06 01:14:48,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:14:48,515 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-06 01:14:48,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 01:14:48,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:48,516 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:48,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-06 01:14:48,517 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:14:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:48,517 INFO L82 PathProgramCache]: Analyzing trace with hash -669323978, now seen corresponding path program 1 times [2020-10-06 01:14:48,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:48,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550824679] [2020-10-06 01:14:48,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:14:48,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550824679] [2020-10-06 01:14:48,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:48,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:14:48,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1809840818] [2020-10-06 01:14:48,574 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:48,576 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:48,577 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-06 01:14:48,578 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:48,578 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:48,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:14:48,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:48,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:14:48,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:14:48,579 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-06 01:14:48,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:48,654 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-06 01:14:48,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:14:48,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-06 01:14:48,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:48,662 INFO L225 Difference]: With dead ends: 843 [2020-10-06 01:14:48,662 INFO L226 Difference]: Without dead ends: 836 [2020-10-06 01:14:48,662 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 [2020-10-06 01:14:48,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-06 01:14:48,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-06 01:14:48,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-06 01:14:48,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-06 01:14:48,691 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-06 01:14:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:48,692 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-06 01:14:48,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:14:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-06 01:14:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:14:48,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:48,694 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:48,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-06 01:14:48,694 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:14:48,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:48,694 INFO L82 PathProgramCache]: Analyzing trace with hash -56737855, now seen corresponding path program 1 times [2020-10-06 01:14:48,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:48,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071736476] [2020-10-06 01:14:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:48,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071736476] [2020-10-06 01:14:48,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181166273] [2020-10-06 01:14:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:14:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:48,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:14:48,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:14:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:48,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:14:48,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-06 01:14:48,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [801456366] [2020-10-06 01:14:48,874 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:48,876 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:48,879 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-06 01:14:48,880 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:48,918 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [7267#(<= ~x~0 0), 7286#(<= thr2Thread1of3ForFork0_~t~0 0)] [2020-10-06 01:14:48,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:14:48,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:48,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:14:48,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:14:48,919 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 9 states. [2020-10-06 01:14:49,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:49,095 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-06 01:14:49,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:14:49,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-06 01:14:49,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:49,103 INFO L225 Difference]: With dead ends: 1059 [2020-10-06 01:14:49,103 INFO L226 Difference]: Without dead ends: 1052 [2020-10-06 01:14:49,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-06 01:14:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-06 01:14:49,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-06 01:14:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-06 01:14:49,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-06 01:14:49,133 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-06 01:14:49,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:49,133 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-06 01:14:49,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:14:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-06 01:14:49,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:14:49,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:49,134 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:49,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-06 01:14:49,348 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:14:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:49,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1024744543, now seen corresponding path program 2 times [2020-10-06 01:14:49,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:49,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181969994] [2020-10-06 01:14:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:14:49,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181969994] [2020-10-06 01:14:49,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:49,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:14:49,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1833041323] [2020-10-06 01:14:49,410 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:49,411 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:49,414 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-06 01:14:49,414 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:49,414 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:49,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:14:49,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:49,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:14:49,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:14:49,416 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-06 01:14:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:49,582 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-06 01:14:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:14:49,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-06 01:14:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:49,591 INFO L225 Difference]: With dead ends: 1053 [2020-10-06 01:14:49,591 INFO L226 Difference]: Without dead ends: 1045 [2020-10-06 01:14:49,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:14:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-06 01:14:49,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-06 01:14:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-06 01:14:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-06 01:14:49,620 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-06 01:14:49,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:49,620 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-06 01:14:49,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:14:49,621 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-06 01:14:49,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:14:49,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:49,622 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:49,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-06 01:14:49,622 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:14:49,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:49,623 INFO L82 PathProgramCache]: Analyzing trace with hash 68174732, now seen corresponding path program 1 times [2020-10-06 01:14:49,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:49,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096812336] [2020-10-06 01:14:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:14:49,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096812336] [2020-10-06 01:14:49,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:49,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:14:49,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [628455544] [2020-10-06 01:14:49,695 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:49,697 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:49,700 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-06 01:14:49,700 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:49,702 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:49,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:14:49,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:49,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:14:49,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:14:49,704 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-06 01:14:49,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:49,785 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-06 01:14:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:14:49,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-06 01:14:49,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:49,792 INFO L225 Difference]: With dead ends: 736 [2020-10-06 01:14:49,793 INFO L226 Difference]: Without dead ends: 728 [2020-10-06 01:14:49,793 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 [2020-10-06 01:14:49,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-06 01:14:49,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-06 01:14:49,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-06 01:14:49,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-06 01:14:49,817 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-06 01:14:49,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:49,818 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-06 01:14:49,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:14:49,818 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-06 01:14:49,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 01:14:49,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:49,819 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:49,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-06 01:14:49,819 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:14:49,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:49,820 INFO L82 PathProgramCache]: Analyzing trace with hash 2109628021, now seen corresponding path program 1 times [2020-10-06 01:14:49,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:49,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158365080] [2020-10-06 01:14:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 01:14:49,847 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 01:14:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 01:14:49,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 01:14:49,896 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 01:14:49,897 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 01:14:49,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-06 01:14:49,898 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 01:14:49,898 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-06 01:14:49,913 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,913 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,914 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,914 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,914 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,914 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,914 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,915 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,915 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,915 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,915 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,915 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,915 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,916 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,916 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,916 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,916 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,916 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,916 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,916 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,917 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,917 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,918 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,918 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,918 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,918 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,918 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,918 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,918 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,919 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,919 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,919 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,924 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,924 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,925 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,925 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,926 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,926 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,926 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,926 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,927 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,927 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,927 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,927 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,928 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,929 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,929 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,930 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,930 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,930 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,932 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,932 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,932 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,932 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,932 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,934 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,934 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,934 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,934 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,934 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,938 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,942 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,943 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,943 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,943 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,943 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,944 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,944 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:14:49,945 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-06 01:14:49,945 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:14:49,946 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:14:49,946 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:14:49,946 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:14:49,946 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:14:49,946 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:14:49,946 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:14:49,946 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:14:49,948 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 105 transitions, 274 flow [2020-10-06 01:14:49,949 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-10-06 01:14:49,966 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-10-06 01:14:49,967 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-06 01:14:49,968 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-10-06 01:14:49,972 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-10-06 01:14:49,987 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-10-06 01:14:49,988 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-06 01:14:49,989 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-10-06 01:14:49,992 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2192 [2020-10-06 01:14:49,992 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:14:51,513 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-06 01:14:51,577 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2240 [2020-10-06 01:14:51,578 INFO L214 etLargeBlockEncoding]: Total number of compositions: 92 [2020-10-06 01:14:51,578 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-06 01:14:51,695 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-06 01:14:51,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-06 01:14:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-06 01:14:51,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:51,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-06 01:14:51,696 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]=== [2020-10-06 01:14:51,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:51,696 INFO L82 PathProgramCache]: Analyzing trace with hash 753552, now seen corresponding path program 1 times [2020-10-06 01:14:51,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:51,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051031865] [2020-10-06 01:14:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:51,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051031865] [2020-10-06 01:14:51,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:51,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:14:51,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2125677399] [2020-10-06 01:14:51,715 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:51,715 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:51,716 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-06 01:14:51,716 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:51,716 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:51,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:14:51,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:51,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:14:51,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:14:51,717 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-06 01:14:51,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:51,765 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-06 01:14:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:14:51,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-06 01:14:51,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:51,784 INFO L225 Difference]: With dead ends: 1889 [2020-10-06 01:14:51,784 INFO L226 Difference]: Without dead ends: 1767 [2020-10-06 01:14:51,784 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 [2020-10-06 01:14:51,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-06 01:14:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-06 01:14:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-06 01:14:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-06 01:14:51,882 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-06 01:14:51,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:51,883 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-06 01:14:51,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:14:51,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-06 01:14:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:14:51,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:51,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:51,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-06 01:14:51,884 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]=== [2020-10-06 01:14:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:51,885 INFO L82 PathProgramCache]: Analyzing trace with hash -260829075, now seen corresponding path program 1 times [2020-10-06 01:14:51,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:51,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544645639] [2020-10-06 01:14:51,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:51,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544645639] [2020-10-06 01:14:51,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:51,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:14:51,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1496635239] [2020-10-06 01:14:51,919 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:51,920 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:51,922 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-06 01:14:51,922 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:51,922 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:51,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:14:51,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:51,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:14:51,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:14:51,924 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-06 01:14:52,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:52,026 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-06 01:14:52,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:14:52,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-06 01:14:52,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:52,119 INFO L225 Difference]: With dead ends: 2905 [2020-10-06 01:14:52,119 INFO L226 Difference]: Without dead ends: 2899 [2020-10-06 01:14:52,119 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 [2020-10-06 01:14:52,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-06 01:14:52,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-06 01:14:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-06 01:14:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-06 01:14:52,234 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-06 01:14:52,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:52,235 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-06 01:14:52,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:14:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-06 01:14:52,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 01:14:52,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:52,236 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:52,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-06 01:14:52,236 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]=== [2020-10-06 01:14:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:52,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1408743431, now seen corresponding path program 1 times [2020-10-06 01:14:52,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:52,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958680206] [2020-10-06 01:14:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:14:52,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958680206] [2020-10-06 01:14:52,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:52,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:14:52,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1214896767] [2020-10-06 01:14:52,269 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:52,270 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:52,271 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-06 01:14:52,272 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:52,272 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:52,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:14:52,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:52,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:14:52,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:14:52,273 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-06 01:14:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:52,372 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-06 01:14:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:14:52,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-06 01:14:52,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:52,402 INFO L225 Difference]: With dead ends: 3204 [2020-10-06 01:14:52,403 INFO L226 Difference]: Without dead ends: 3194 [2020-10-06 01:14:52,403 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 [2020-10-06 01:14:52,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-06 01:14:52,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-06 01:14:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-06 01:14:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-06 01:14:52,527 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-06 01:14:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:52,528 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-06 01:14:52,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:14:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-06 01:14:52,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:14:52,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:52,529 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:52,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-06 01:14:52,529 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]=== [2020-10-06 01:14:52,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:52,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1555768808, now seen corresponding path program 1 times [2020-10-06 01:14:52,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:52,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17727892] [2020-10-06 01:14:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:52,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17727892] [2020-10-06 01:14:52,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646654522] [2020-10-06 01:14:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:14:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:52,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:14:52,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:14:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:52,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:14:52,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-06 01:14:52,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1490089061] [2020-10-06 01:14:52,691 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:52,693 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:52,696 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-06 01:14:52,696 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:52,729 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [24136#(<= ~x~0 0), 24155#(<= thr2Thread1of4ForFork0_~t~0 0)] [2020-10-06 01:14:52,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:14:52,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:52,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:14:52,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:14:52,731 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 9 states. [2020-10-06 01:14:52,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:52,948 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-06 01:14:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:14:52,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-06 01:14:52,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:52,976 INFO L225 Difference]: With dead ends: 4556 [2020-10-06 01:14:52,976 INFO L226 Difference]: Without dead ends: 4546 [2020-10-06 01:14:52,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-06 01:14:53,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-06 01:14:53,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-06 01:14:53,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-06 01:14:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-06 01:14:53,157 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-06 01:14:53,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:53,157 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-06 01:14:53,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:14:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-06 01:14:53,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:14:53,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:53,158 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:53,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-06 01:14:53,372 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]=== [2020-10-06 01:14:53,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:53,373 INFO L82 PathProgramCache]: Analyzing trace with hash -887756896, now seen corresponding path program 2 times [2020-10-06 01:14:53,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:53,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360328936] [2020-10-06 01:14:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:53,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:14:53,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360328936] [2020-10-06 01:14:53,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:53,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:14:53,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1254855309] [2020-10-06 01:14:53,418 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:53,420 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:53,422 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-06 01:14:53,422 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:53,423 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:53,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:14:53,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:53,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:14:53,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:14:53,424 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-06 01:14:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:53,643 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-06 01:14:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:14:53,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-06 01:14:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:53,663 INFO L225 Difference]: With dead ends: 4612 [2020-10-06 01:14:53,663 INFO L226 Difference]: Without dead ends: 4601 [2020-10-06 01:14:53,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:14:53,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-06 01:14:53,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-06 01:14:53,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-06 01:14:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-06 01:14:53,782 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-06 01:14:53,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:53,782 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-06 01:14:53,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:14:53,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-06 01:14:53,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:14:53,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:53,784 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:53,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-06 01:14:53,784 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]=== [2020-10-06 01:14:53,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:53,784 INFO L82 PathProgramCache]: Analyzing trace with hash 695111130, now seen corresponding path program 1 times [2020-10-06 01:14:53,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:53,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811503697] [2020-10-06 01:14:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:14:53,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811503697] [2020-10-06 01:14:53,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:53,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:14:53,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1678610685] [2020-10-06 01:14:53,820 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:53,822 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:53,824 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-06 01:14:53,824 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:53,825 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:53,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:14:53,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:53,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:14:53,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:14:53,826 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-06 01:14:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:53,918 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-06 01:14:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:14:53,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-06 01:14:53,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:53,933 INFO L225 Difference]: With dead ends: 3265 [2020-10-06 01:14:53,933 INFO L226 Difference]: Without dead ends: 3250 [2020-10-06 01:14:53,934 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 [2020-10-06 01:14:53,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-06 01:14:54,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-06 01:14:54,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-06 01:14:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-06 01:14:54,031 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-06 01:14:54,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:54,031 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-06 01:14:54,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:14:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-06 01:14:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:14:54,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:54,033 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:54,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-06 01:14:54,033 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]=== [2020-10-06 01:14:54,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:54,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1754455113, now seen corresponding path program 1 times [2020-10-06 01:14:54,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:54,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840364088] [2020-10-06 01:14:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-06 01:14:54,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840364088] [2020-10-06 01:14:54,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27746960] [2020-10-06 01:14:54,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:14:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:54,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:14:54,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:14:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-06 01:14:54,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:14:54,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-06 01:14:54,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [922399350] [2020-10-06 01:14:54,167 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:54,169 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:54,174 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-10-06 01:14:54,174 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:54,229 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [49633#(<= thr2Thread1of4ForFork0_~t~0 0), 49614#(<= ~x~0 0)] [2020-10-06 01:14:54,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:14:54,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:54,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:14:54,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:14:54,231 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 9 states. [2020-10-06 01:14:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:54,518 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-06 01:14:54,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:14:54,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-06 01:14:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:54,537 INFO L225 Difference]: With dead ends: 4825 [2020-10-06 01:14:54,537 INFO L226 Difference]: Without dead ends: 4813 [2020-10-06 01:14:54,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-06 01:14:54,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-06 01:14:54,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-06 01:14:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-06 01:14:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-06 01:14:54,668 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-06 01:14:54,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:54,669 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-06 01:14:54,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:14:54,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-06 01:14:54,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:14:54,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:54,670 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:54,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:14:54,886 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]=== [2020-10-06 01:14:54,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:54,886 INFO L82 PathProgramCache]: Analyzing trace with hash -131464925, now seen corresponding path program 1 times [2020-10-06 01:14:54,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:54,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886843005] [2020-10-06 01:14:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-06 01:14:54,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886843005] [2020-10-06 01:14:54,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096288872] [2020-10-06 01:14:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:14:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:55,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:14:55,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:14:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-06 01:14:55,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:14:55,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-06 01:14:55,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1093422801] [2020-10-06 01:14:55,082 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:55,085 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:55,090 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-10-06 01:14:55,091 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:55,133 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [59128#(<= ~x~0 0), 59162#(<= thr2Thread2of4ForFork0_~t~0 0)] [2020-10-06 01:14:55,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:14:55,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:55,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:14:55,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:14:55,134 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 9 states. [2020-10-06 01:14:55,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:55,377 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-06 01:14:55,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:14:55,378 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-06 01:14:55,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:55,396 INFO L225 Difference]: With dead ends: 4942 [2020-10-06 01:14:55,396 INFO L226 Difference]: Without dead ends: 4925 [2020-10-06 01:14:55,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-06 01:14:55,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-06 01:14:55,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-06 01:14:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-06 01:14:55,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-06 01:14:55,517 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-06 01:14:55,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:55,517 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-06 01:14:55,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:14:55,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-06 01:14:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:14:55,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:55,519 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:55,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:14:55,735 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]=== [2020-10-06 01:14:55,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:55,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2013120191, now seen corresponding path program 2 times [2020-10-06 01:14:55,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:55,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354244426] [2020-10-06 01:14:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:14:55,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354244426] [2020-10-06 01:14:55,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:55,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:14:55,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [277068877] [2020-10-06 01:14:55,815 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:55,817 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:55,819 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-06 01:14:55,820 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:55,821 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:55,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:14:55,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:55,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:14:55,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:14:55,824 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-06 01:14:56,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:56,175 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-06 01:14:56,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:14:56,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-06 01:14:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:56,196 INFO L225 Difference]: With dead ends: 4934 [2020-10-06 01:14:56,196 INFO L226 Difference]: Without dead ends: 4917 [2020-10-06 01:14:56,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:14:56,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-06 01:14:56,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-06 01:14:56,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-06 01:14:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-06 01:14:56,313 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-06 01:14:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:56,315 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-06 01:14:56,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:14:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-06 01:14:56,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:14:56,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:56,316 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:56,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-06 01:14:56,317 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]=== [2020-10-06 01:14:56,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:56,317 INFO L82 PathProgramCache]: Analyzing trace with hash -2013113743, now seen corresponding path program 2 times [2020-10-06 01:14:56,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:56,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554216418] [2020-10-06 01:14:56,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:56,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:14:56,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554216418] [2020-10-06 01:14:56,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:14:56,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:14:56,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [851363256] [2020-10-06 01:14:56,376 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:56,378 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:56,383 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-06 01:14:56,383 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:56,383 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:14:56,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:14:56,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:56,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:14:56,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:14:56,385 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-06 01:14:56,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:56,605 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-06 01:14:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:14:56,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-06 01:14:56,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:56,623 INFO L225 Difference]: With dead ends: 4774 [2020-10-06 01:14:56,624 INFO L226 Difference]: Without dead ends: 4757 [2020-10-06 01:14:56,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:14:56,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-06 01:14:56,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-06 01:14:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-06 01:14:56,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-06 01:14:56,732 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-06 01:14:56,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:56,733 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-06 01:14:56,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:14:56,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-06 01:14:56,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:14:56,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:56,734 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:56,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-06 01:14:56,735 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]=== [2020-10-06 01:14:56,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:56,735 INFO L82 PathProgramCache]: Analyzing trace with hash -9146414, now seen corresponding path program 1 times [2020-10-06 01:14:56,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:56,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030233506] [2020-10-06 01:14:56,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:56,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030233506] [2020-10-06 01:14:56,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371850535] [2020-10-06 01:14:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:14:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:56,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:14:56,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:14:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:14:56,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:14:56,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:14:56,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2048083205] [2020-10-06 01:14:56,915 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:56,917 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:56,925 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-10-06 01:14:56,925 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:56,981 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [87235#(<= ~x~0 0), 87254#(<= thr2Thread1of4ForFork0_~t~0 0)] [2020-10-06 01:14:56,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 01:14:56,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:56,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 01:14:56,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:14:56,982 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 11 states. [2020-10-06 01:14:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:57,553 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-06 01:14:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:14:57,554 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-06 01:14:57,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:57,571 INFO L225 Difference]: With dead ends: 6025 [2020-10-06 01:14:57,571 INFO L226 Difference]: Without dead ends: 6017 [2020-10-06 01:14:57,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 01:14:57,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-06 01:14:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-06 01:14:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-06 01:14:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-06 01:14:57,744 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-06 01:14:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:57,745 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-06 01:14:57,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-06 01:14:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-06 01:14:57,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:14:57,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:57,747 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:57,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-06 01:14:57,961 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]=== [2020-10-06 01:14:57,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1890795232, now seen corresponding path program 2 times [2020-10-06 01:14:57,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:57,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964698068] [2020-10-06 01:14:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:58,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-06 01:14:58,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964698068] [2020-10-06 01:14:58,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19783406] [2020-10-06 01:14:58,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:14:58,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 01:14:58,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:14:58,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:14:58,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:14:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-06 01:14:58,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:14:58,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:14:58,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [565739027] [2020-10-06 01:14:58,143 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:58,145 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:58,150 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-06 01:14:58,151 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:58,198 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [97611#(<= ~x~0 0), 97630#(<= thr2Thread1of4ForFork0_~t~0 0)] [2020-10-06 01:14:58,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 01:14:58,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:58,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 01:14:58,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:14:58,200 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 11 states. [2020-10-06 01:14:58,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:58,786 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-06 01:14:58,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:14:58,787 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-06 01:14:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:58,800 INFO L225 Difference]: With dead ends: 5914 [2020-10-06 01:14:58,800 INFO L226 Difference]: Without dead ends: 5903 [2020-10-06 01:14:58,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 01:14:58,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-06 01:14:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-06 01:14:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-06 01:14:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-06 01:14:58,907 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-06 01:14:58,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:14:58,907 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-06 01:14:58,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-06 01:14:58,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-06 01:14:58,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:14:58,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:14:58,909 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:14:59,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:14:59,125 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]=== [2020-10-06 01:14:59,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:14:59,126 INFO L82 PathProgramCache]: Analyzing trace with hash 180724060, now seen corresponding path program 3 times [2020-10-06 01:14:59,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:14:59,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560687373] [2020-10-06 01:14:59,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:14:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:14:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-06 01:14:59,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560687373] [2020-10-06 01:14:59,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409171925] [2020-10-06 01:14:59,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:14:59,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-06 01:14:59,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:14:59,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:14:59,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:14:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-06 01:14:59,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:14:59,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:14:59,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [272709065] [2020-10-06 01:14:59,302 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:14:59,304 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:14:59,310 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-06 01:14:59,310 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:14:59,355 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [107812#(<= ~x~0 0), 107846#(<= thr2Thread2of4ForFork0_~t~0 0)] [2020-10-06 01:14:59,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 01:14:59,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:14:59,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 01:14:59,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:14:59,356 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 11 states. [2020-10-06 01:14:59,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:14:59,936 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-06 01:14:59,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:14:59,936 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-06 01:14:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:14:59,947 INFO L225 Difference]: With dead ends: 5907 [2020-10-06 01:14:59,947 INFO L226 Difference]: Without dead ends: 5899 [2020-10-06 01:14:59,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 01:14:59,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-06 01:15:00,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-06 01:15:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-06 01:15:00,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-06 01:15:00,050 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-06 01:15:00,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:00,050 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-06 01:15:00,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-06 01:15:00,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-06 01:15:00,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:15:00,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:00,053 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:00,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-06 01:15:00,266 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]=== [2020-10-06 01:15:00,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:00,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1783759286, now seen corresponding path program 4 times [2020-10-06 01:15:00,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:00,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831108804] [2020-10-06 01:15:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-06 01:15:00,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831108804] [2020-10-06 01:15:00,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140449018] [2020-10-06 01:15:00,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:00,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 01:15:00,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:15:00,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:00,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-06 01:15:00,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:00,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:15:00,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1289265443] [2020-10-06 01:15:00,451 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:00,453 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:00,458 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-10-06 01:15:00,458 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:00,481 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [117852#(<= ~x~0 0), 117886#(<= thr2Thread2of4ForFork0_~t~0 0)] [2020-10-06 01:15:00,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 01:15:00,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:00,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 01:15:00,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:15:00,482 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 11 states. [2020-10-06 01:15:01,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:01,024 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-06 01:15:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:01,025 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-06 01:15:01,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:01,039 INFO L225 Difference]: With dead ends: 5835 [2020-10-06 01:15:01,039 INFO L226 Difference]: Without dead ends: 5824 [2020-10-06 01:15:01,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 01:15:01,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-06 01:15:01,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-06 01:15:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-06 01:15:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-06 01:15:01,127 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-06 01:15:01,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:01,127 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-06 01:15:01,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-06 01:15:01,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-06 01:15:01,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:15:01,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:01,129 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:01,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-06 01:15:01,342 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]=== [2020-10-06 01:15:01,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:01,343 INFO L82 PathProgramCache]: Analyzing trace with hash -964809789, now seen corresponding path program 1 times [2020-10-06 01:15:01,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:01,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564218250] [2020-10-06 01:15:01,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:15:01,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564218250] [2020-10-06 01:15:01,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:01,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:15:01,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [991589655] [2020-10-06 01:15:01,410 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:01,413 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:01,418 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-06 01:15:01,418 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:01,418 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:01,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:15:01,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:01,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:15:01,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:15:01,420 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 5 states. [2020-10-06 01:15:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:01,528 INFO L93 Difference]: Finished difference Result 3016 states and 10840 transitions. [2020-10-06 01:15:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:15:01,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-06 01:15:01,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:01,540 INFO L225 Difference]: With dead ends: 3016 [2020-10-06 01:15:01,540 INFO L226 Difference]: Without dead ends: 3000 [2020-10-06 01:15:01,541 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 [2020-10-06 01:15:01,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-10-06 01:15:01,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2183. [2020-10-06 01:15:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-10-06 01:15:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 8210 transitions. [2020-10-06 01:15:01,716 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 8210 transitions. Word has length 21 [2020-10-06 01:15:01,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:01,716 INFO L479 AbstractCegarLoop]: Abstraction has 2183 states and 8210 transitions. [2020-10-06 01:15:01,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:15:01,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 8210 transitions. [2020-10-06 01:15:01,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:15:01,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:01,719 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:01,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-06 01:15:01,719 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]=== [2020-10-06 01:15:01,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:01,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1873231848, now seen corresponding path program 5 times [2020-10-06 01:15:01,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:01,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097386505] [2020-10-06 01:15:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:15:01,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097386505] [2020-10-06 01:15:01,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:01,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:15:01,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [806223547] [2020-10-06 01:15:01,810 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:01,812 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:01,816 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-06 01:15:01,816 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:01,817 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:01,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:01,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:01,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:01,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:01,818 INFO L87 Difference]: Start difference. First operand 2183 states and 8210 transitions. Second operand 9 states. [2020-10-06 01:15:02,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:02,332 INFO L93 Difference]: Finished difference Result 6150 states and 19247 transitions. [2020-10-06 01:15:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:02,332 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:15:02,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:02,342 INFO L225 Difference]: With dead ends: 6150 [2020-10-06 01:15:02,343 INFO L226 Difference]: Without dead ends: 6139 [2020-10-06 01:15:02,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:02,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6139 states. [2020-10-06 01:15:02,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6139 to 2096. [2020-10-06 01:15:02,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-10-06 01:15:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-10-06 01:15:02,444 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-10-06 01:15:02,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:02,445 INFO L479 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-10-06 01:15:02,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:02,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-10-06 01:15:02,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:15:02,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:02,447 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:02,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-06 01:15:02,447 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]=== [2020-10-06 01:15:02,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:02,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1867041768, now seen corresponding path program 6 times [2020-10-06 01:15:02,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:02,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031042240] [2020-10-06 01:15:02,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:15:02,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031042240] [2020-10-06 01:15:02,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:02,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:15:02,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [920354169] [2020-10-06 01:15:02,523 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:02,525 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:02,530 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-06 01:15:02,530 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:02,531 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:02,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:02,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:02,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:02,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:02,532 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 9 states. [2020-10-06 01:15:03,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:03,036 INFO L93 Difference]: Finished difference Result 6017 states and 18791 transitions. [2020-10-06 01:15:03,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:03,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:15:03,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:03,047 INFO L225 Difference]: With dead ends: 6017 [2020-10-06 01:15:03,047 INFO L226 Difference]: Without dead ends: 6002 [2020-10-06 01:15:03,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:03,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-10-06 01:15:03,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 1965. [2020-10-06 01:15:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-06 01:15:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-06 01:15:03,144 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-06 01:15:03,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:03,145 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-06 01:15:03,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-06 01:15:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-06 01:15:03,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:03,147 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:03,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-06 01:15:03,148 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]=== [2020-10-06 01:15:03,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:03,148 INFO L82 PathProgramCache]: Analyzing trace with hash 150840888, now seen corresponding path program 1 times [2020-10-06 01:15:03,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:03,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468315033] [2020-10-06 01:15:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 01:15:03,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 01:15:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 01:15:03,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 01:15:03,173 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 01:15:03,173 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 01:15:03,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-06 01:15:03,174 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 01:15:03,175 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-06 01:15:03,188 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,188 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,190 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,190 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,190 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,191 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,191 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,191 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,192 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,192 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,192 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,192 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,192 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,193 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,193 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,193 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,193 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,193 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,193 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,193 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,204 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,204 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,206 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,206 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,206 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,206 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,206 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,207 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,208 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,208 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,208 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,208 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,209 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,210 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,210 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,210 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,210 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,211 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,211 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,212 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,212 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,212 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,213 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,213 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,213 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,213 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,213 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,213 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,214 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,214 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,215 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,215 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,215 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,215 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,216 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,216 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,217 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,217 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,217 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,217 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,220 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,220 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,220 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:15:03,222 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-06 01:15:03,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:15:03,222 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:15:03,222 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:15:03,222 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:15:03,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:15:03,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:15:03,223 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:15:03,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:15:03,225 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 123 transitions, 336 flow [2020-10-06 01:15:03,225 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-10-06 01:15:03,242 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-10-06 01:15:03,242 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-06 01:15:03,244 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-10-06 01:15:03,248 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-10-06 01:15:03,263 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-10-06 01:15:03,263 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-06 01:15:03,265 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-10-06 01:15:03,269 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2860 [2020-10-06 01:15:03,270 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:15:04,976 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-06 01:15:05,048 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3096 [2020-10-06 01:15:05,048 INFO L214 etLargeBlockEncoding]: Total number of compositions: 115 [2020-10-06 01:15:05,048 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-06 01:15:05,465 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-06 01:15:05,465 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-06 01:15:05,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-06 01:15:05,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:05,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-06 01:15:05,466 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]=== [2020-10-06 01:15:05,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:05,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1011964, now seen corresponding path program 1 times [2020-10-06 01:15:05,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:05,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298170771] [2020-10-06 01:15:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:15:05,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298170771] [2020-10-06 01:15:05,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:05,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:15:05,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2024230254] [2020-10-06 01:15:05,507 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:05,507 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:05,507 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-06 01:15:05,507 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:05,508 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:05,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:15:05,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:05,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:15:05,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:15:05,508 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-06 01:15:05,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:05,587 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-06 01:15:05,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:15:05,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-06 01:15:05,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:05,614 INFO L225 Difference]: With dead ends: 5844 [2020-10-06 01:15:05,614 INFO L226 Difference]: Without dead ends: 5479 [2020-10-06 01:15:05,614 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 [2020-10-06 01:15:05,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-06 01:15:05,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-06 01:15:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-06 01:15:05,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-06 01:15:05,886 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-06 01:15:05,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:05,886 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-06 01:15:05,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:15:05,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-06 01:15:05,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:15:05,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:05,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:05,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-06 01:15:05,887 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]=== [2020-10-06 01:15:05,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:05,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1084774388, now seen corresponding path program 1 times [2020-10-06 01:15:05,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:05,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041167168] [2020-10-06 01:15:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:15:05,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041167168] [2020-10-06 01:15:05,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:05,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:15:05,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [434246701] [2020-10-06 01:15:05,925 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:05,925 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:05,926 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-06 01:15:05,926 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:05,927 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:05,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:15:05,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:05,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:15:05,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:15:05,928 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-06 01:15:06,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:06,038 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-06 01:15:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:15:06,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-06 01:15:06,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:06,065 INFO L225 Difference]: With dead ends: 9673 [2020-10-06 01:15:06,065 INFO L226 Difference]: Without dead ends: 9666 [2020-10-06 01:15:06,066 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 [2020-10-06 01:15:06,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-06 01:15:06,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-06 01:15:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-06 01:15:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-06 01:15:06,284 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-06 01:15:06,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:06,287 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-06 01:15:06,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:15:06,287 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-06 01:15:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 01:15:06,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:06,288 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:06,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-06 01:15:06,289 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]=== [2020-10-06 01:15:06,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:06,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2112403116, now seen corresponding path program 1 times [2020-10-06 01:15:06,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:06,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388627530] [2020-10-06 01:15:06,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:15:06,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388627530] [2020-10-06 01:15:06,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:06,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:15:06,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [948481699] [2020-10-06 01:15:06,357 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:06,357 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:06,359 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-06 01:15:06,359 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:06,359 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:06,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:15:06,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:06,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:15:06,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:15:06,361 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-06 01:15:06,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:06,518 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-06 01:15:06,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:15:06,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-06 01:15:06,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:06,564 INFO L225 Difference]: With dead ends: 11081 [2020-10-06 01:15:06,564 INFO L226 Difference]: Without dead ends: 11068 [2020-10-06 01:15:06,566 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 [2020-10-06 01:15:06,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-06 01:15:06,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-06 01:15:06,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-06 01:15:06,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-06 01:15:06,965 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-06 01:15:06,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:06,965 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-06 01:15:06,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:15:06,966 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-06 01:15:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:15:06,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:06,966 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:06,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-06 01:15:06,967 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]=== [2020-10-06 01:15:06,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:06,967 INFO L82 PathProgramCache]: Analyzing trace with hash -28983895, now seen corresponding path program 1 times [2020-10-06 01:15:06,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:06,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195843942] [2020-10-06 01:15:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:15:07,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195843942] [2020-10-06 01:15:07,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366222757] [2020-10-06 01:15:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:07,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:15:07,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:15:07,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:07,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-06 01:15:07,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [319748941] [2020-10-06 01:15:07,081 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:07,082 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:07,083 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-06 01:15:07,084 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:07,114 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:07,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:15:07,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:07,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:15:07,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:15:07,115 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 7 states. [2020-10-06 01:15:07,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:07,396 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-06 01:15:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:15:07,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-06 01:15:07,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:07,442 INFO L225 Difference]: With dead ends: 16749 [2020-10-06 01:15:07,443 INFO L226 Difference]: Without dead ends: 16736 [2020-10-06 01:15:07,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:15:07,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-06 01:15:07,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-06 01:15:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-06 01:15:07,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-06 01:15:07,762 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-06 01:15:07,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:07,762 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-06 01:15:07,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:15:07,762 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-06 01:15:07,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:15:07,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:07,763 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:07,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:07,967 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]=== [2020-10-06 01:15:07,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:07,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1500121559, now seen corresponding path program 2 times [2020-10-06 01:15:07,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:07,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52870368] [2020-10-06 01:15:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:15:08,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52870368] [2020-10-06 01:15:08,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:08,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:15:08,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1068330659] [2020-10-06 01:15:08,009 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:08,010 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:08,012 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-06 01:15:08,012 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:08,012 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:08,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:15:08,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:08,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:15:08,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:15:08,013 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-06 01:15:08,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:08,299 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-06 01:15:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:15:08,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-06 01:15:08,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:09,087 INFO L225 Difference]: With dead ends: 17085 [2020-10-06 01:15:09,087 INFO L226 Difference]: Without dead ends: 17071 [2020-10-06 01:15:09,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:15:09,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-06 01:15:09,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-06 01:15:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-06 01:15:09,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-06 01:15:09,371 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-06 01:15:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:09,372 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-06 01:15:09,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:15:09,372 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-06 01:15:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:15:09,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:09,373 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:09,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-06 01:15:09,373 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]=== [2020-10-06 01:15:09,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:09,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1891696605, now seen corresponding path program 1 times [2020-10-06 01:15:09,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:09,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306655263] [2020-10-06 01:15:09,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:15:09,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306655263] [2020-10-06 01:15:09,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:09,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:15:09,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [882741434] [2020-10-06 01:15:09,414 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:09,415 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:09,418 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-06 01:15:09,418 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:09,418 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:09,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:15:09,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:09,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:15:09,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:15:09,419 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-06 01:15:09,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:09,624 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-06 01:15:09,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:15:09,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-06 01:15:09,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:09,682 INFO L225 Difference]: With dead ends: 12234 [2020-10-06 01:15:09,682 INFO L226 Difference]: Without dead ends: 12212 [2020-10-06 01:15:09,684 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 [2020-10-06 01:15:09,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-06 01:15:10,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-06 01:15:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-06 01:15:10,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-06 01:15:10,078 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-06 01:15:10,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:10,079 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-06 01:15:10,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:15:10,079 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-06 01:15:10,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:15:10,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:10,080 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:10,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-06 01:15:10,080 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]=== [2020-10-06 01:15:10,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:10,081 INFO L82 PathProgramCache]: Analyzing trace with hash -74039136, now seen corresponding path program 1 times [2020-10-06 01:15:10,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:10,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873752875] [2020-10-06 01:15:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:15:10,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873752875] [2020-10-06 01:15:10,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781324467] [2020-10-06 01:15:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:10,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:15:10,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:10,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:15:10,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:10,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-06 01:15:10,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1050997128] [2020-10-06 01:15:10,230 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:10,232 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:10,237 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-10-06 01:15:10,238 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:10,283 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:10,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:15:10,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:10,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:15:10,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:15:10,284 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 7 states. [2020-10-06 01:15:10,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:10,683 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-06 01:15:10,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:15:10,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-06 01:15:10,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:10,739 INFO L225 Difference]: With dead ends: 19016 [2020-10-06 01:15:10,739 INFO L226 Difference]: Without dead ends: 18998 [2020-10-06 01:15:10,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:15:10,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-06 01:15:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-06 01:15:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-06 01:15:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-06 01:15:11,077 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-06 01:15:11,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:11,078 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-06 01:15:11,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:15:11,078 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-06 01:15:11,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:15:11,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:11,079 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:11,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-06 01:15:11,280 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]=== [2020-10-06 01:15:11,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:11,281 INFO L82 PathProgramCache]: Analyzing trace with hash -274460668, now seen corresponding path program 1 times [2020-10-06 01:15:11,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:11,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212224720] [2020-10-06 01:15:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:15:11,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212224720] [2020-10-06 01:15:11,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956075828] [2020-10-06 01:15:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:11,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:15:11,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:15:11,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:11,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-06 01:15:11,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1371146264] [2020-10-06 01:15:11,415 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:11,417 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:11,421 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-10-06 01:15:11,421 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:11,436 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:11,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:15:11,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:11,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:15:11,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:15:11,438 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 7 states. [2020-10-06 01:15:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:11,825 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-10-06 01:15:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:15:11,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-06 01:15:11,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:11,904 INFO L225 Difference]: With dead ends: 19670 [2020-10-06 01:15:11,904 INFO L226 Difference]: Without dead ends: 19645 [2020-10-06 01:15:11,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:15:12,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-10-06 01:15:12,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-10-06 01:15:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-10-06 01:15:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-10-06 01:15:12,634 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-10-06 01:15:12,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:12,634 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-10-06 01:15:12,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:15:12,635 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-10-06 01:15:12,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:15:12,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:12,636 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:12,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-06 01:15:12,847 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]=== [2020-10-06 01:15:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:12,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1149256224, now seen corresponding path program 2 times [2020-10-06 01:15:12,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:12,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135075837] [2020-10-06 01:15:12,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:12,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:15:12,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135075837] [2020-10-06 01:15:12,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:12,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:15:12,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1953912788] [2020-10-06 01:15:12,890 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:12,892 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:12,895 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-06 01:15:12,895 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:12,895 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:12,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:15:12,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:12,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:15:12,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:15:12,896 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-10-06 01:15:13,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:13,312 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-10-06 01:15:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:15:13,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-06 01:15:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:13,390 INFO L225 Difference]: With dead ends: 19852 [2020-10-06 01:15:13,390 INFO L226 Difference]: Without dead ends: 19827 [2020-10-06 01:15:13,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:15:13,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-06 01:15:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-10-06 01:15:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-10-06 01:15:13,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-10-06 01:15:13,835 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-10-06 01:15:13,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:13,836 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-10-06 01:15:13,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:15:13,836 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-10-06 01:15:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:15:13,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:13,837 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:13,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-06 01:15:13,838 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]=== [2020-10-06 01:15:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:13,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1149271290, now seen corresponding path program 2 times [2020-10-06 01:15:13,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:13,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848270368] [2020-10-06 01:15:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:15:13,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848270368] [2020-10-06 01:15:13,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:13,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:15:13,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [763619572] [2020-10-06 01:15:13,886 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:13,888 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:13,891 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-06 01:15:13,891 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:13,891 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:13,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:15:13,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:13,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:15:13,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:15:13,892 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-10-06 01:15:14,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:14,199 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-06 01:15:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:15:14,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-06 01:15:14,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:14,252 INFO L225 Difference]: With dead ends: 19555 [2020-10-06 01:15:14,252 INFO L226 Difference]: Without dead ends: 19530 [2020-10-06 01:15:14,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:15:14,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-06 01:15:14,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-06 01:15:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-06 01:15:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-06 01:15:14,867 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-06 01:15:14,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:14,867 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-06 01:15:14,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:15:14,867 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-06 01:15:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:15:14,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:14,874 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:14,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-06 01:15:14,875 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]=== [2020-10-06 01:15:14,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:14,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1557322431, now seen corresponding path program 1 times [2020-10-06 01:15:14,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:14,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290332992] [2020-10-06 01:15:14,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:15:14,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290332992] [2020-10-06 01:15:14,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893924438] [2020-10-06 01:15:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:15,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:15,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:15:15,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:15,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:15,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2756193] [2020-10-06 01:15:15,034 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:15,036 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:15,043 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-10-06 01:15:15,043 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:15,087 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:15,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:15,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:15,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:15,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:15,089 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 9 states. [2020-10-06 01:15:15,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:15,766 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-06 01:15:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:15,767 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:15:15,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:15,843 INFO L225 Difference]: With dead ends: 26969 [2020-10-06 01:15:15,843 INFO L226 Difference]: Without dead ends: 26957 [2020-10-06 01:15:15,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:15,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-06 01:15:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-10-06 01:15:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-10-06 01:15:16,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-10-06 01:15:16,287 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-10-06 01:15:16,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:16,287 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-10-06 01:15:16,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:16,287 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-10-06 01:15:16,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:15:16,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:16,289 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:16,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:16,489 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]=== [2020-10-06 01:15:16,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:16,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1862834243, now seen corresponding path program 2 times [2020-10-06 01:15:16,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:16,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280622174] [2020-10-06 01:15:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:15:16,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280622174] [2020-10-06 01:15:16,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70049436] [2020-10-06 01:15:16,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:16,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 01:15:16,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:15:16,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:16,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:15:16,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:16,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:16,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1595339278] [2020-10-06 01:15:16,646 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:16,648 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:16,655 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-06 01:15:16,655 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:16,697 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:16,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:16,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:16,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:16,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:16,698 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 9 states. [2020-10-06 01:15:18,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:18,174 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-10-06 01:15:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:18,175 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:15:18,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:18,287 INFO L225 Difference]: With dead ends: 26661 [2020-10-06 01:15:18,287 INFO L226 Difference]: Without dead ends: 26645 [2020-10-06 01:15:18,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:18,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-10-06 01:15:18,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-10-06 01:15:18,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-06 01:15:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-06 01:15:18,740 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-06 01:15:18,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:18,740 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-06 01:15:18,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:18,740 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-06 01:15:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:15:18,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:18,741 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:18,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-06 01:15:18,942 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]=== [2020-10-06 01:15:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:18,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1769991039, now seen corresponding path program 3 times [2020-10-06 01:15:18,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:18,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571002909] [2020-10-06 01:15:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:15:19,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571002909] [2020-10-06 01:15:19,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841907951] [2020-10-06 01:15:19,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:19,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-06 01:15:19,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:15:19,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:19,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:15:19,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:19,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:19,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [748850357] [2020-10-06 01:15:19,126 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:19,128 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:19,134 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-06 01:15:19,134 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:19,176 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:19,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:19,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:19,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:19,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:19,177 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 9 states. [2020-10-06 01:15:19,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:19,841 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-10-06 01:15:19,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:19,841 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:15:19,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:19,925 INFO L225 Difference]: With dead ends: 26686 [2020-10-06 01:15:19,925 INFO L226 Difference]: Without dead ends: 26674 [2020-10-06 01:15:19,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:20,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-10-06 01:15:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-10-06 01:15:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-10-06 01:15:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-10-06 01:15:20,602 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-10-06 01:15:20,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:20,602 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-10-06 01:15:20,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-10-06 01:15:20,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:15:20,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:20,603 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:20,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:20,804 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]=== [2020-10-06 01:15:20,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:20,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1763681919, now seen corresponding path program 4 times [2020-10-06 01:15:20,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:20,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942233736] [2020-10-06 01:15:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:15:20,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942233736] [2020-10-06 01:15:20,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083884649] [2020-10-06 01:15:20,865 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:20,935 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 01:15:20,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:15:20,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:20,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:15:20,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:20,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:20,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1530253169] [2020-10-06 01:15:20,945 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:20,948 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:20,954 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-10-06 01:15:20,954 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:20,966 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:20,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:20,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:20,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:20,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:20,968 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 9 states. [2020-10-06 01:15:21,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:21,633 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-10-06 01:15:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:21,633 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:15:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:21,720 INFO L225 Difference]: With dead ends: 26489 [2020-10-06 01:15:21,720 INFO L226 Difference]: Without dead ends: 26473 [2020-10-06 01:15:21,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:21,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-10-06 01:15:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-10-06 01:15:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-10-06 01:15:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-10-06 01:15:22,155 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-10-06 01:15:22,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:22,155 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-10-06 01:15:22,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:22,155 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-10-06 01:15:22,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:15:22,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:22,157 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:22,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-06 01:15:22,358 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]=== [2020-10-06 01:15:22,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:22,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1774143127, now seen corresponding path program 1 times [2020-10-06 01:15:22,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:22,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077338945] [2020-10-06 01:15:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:15:22,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077338945] [2020-10-06 01:15:22,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:22,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:15:22,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1577745161] [2020-10-06 01:15:22,395 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:22,397 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:22,400 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-06 01:15:22,400 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:22,401 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:22,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:15:22,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:22,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:15:22,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:15:22,402 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-10-06 01:15:22,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:22,538 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-10-06 01:15:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:15:22,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-06 01:15:22,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:22,582 INFO L225 Difference]: With dead ends: 13251 [2020-10-06 01:15:22,582 INFO L226 Difference]: Without dead ends: 13220 [2020-10-06 01:15:22,583 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 [2020-10-06 01:15:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-10-06 01:15:22,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-10-06 01:15:22,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-10-06 01:15:22,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-10-06 01:15:22,883 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-10-06 01:15:22,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:22,883 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-10-06 01:15:22,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:15:22,884 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-10-06 01:15:22,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:15:22,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:22,886 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:22,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-06 01:15:22,886 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]=== [2020-10-06 01:15:22,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:22,886 INFO L82 PathProgramCache]: Analyzing trace with hash -628636285, now seen corresponding path program 5 times [2020-10-06 01:15:22,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:22,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375982773] [2020-10-06 01:15:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:15:22,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375982773] [2020-10-06 01:15:22,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:22,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:15:22,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1811190722] [2020-10-06 01:15:22,954 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:22,956 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:22,960 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-06 01:15:22,961 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:22,962 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:22,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:22,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:22,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:22,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:22,963 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-10-06 01:15:23,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:23,770 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-10-06 01:15:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:23,770 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:15:23,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:23,851 INFO L225 Difference]: With dead ends: 29788 [2020-10-06 01:15:23,852 INFO L226 Difference]: Without dead ends: 29770 [2020-10-06 01:15:23,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:24,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-10-06 01:15:24,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-10-06 01:15:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-10-06 01:15:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-10-06 01:15:24,344 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-10-06 01:15:24,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:24,345 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-10-06 01:15:24,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:24,345 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-10-06 01:15:24,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:15:24,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:24,346 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:24,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-06 01:15:24,346 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]=== [2020-10-06 01:15:24,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:24,347 INFO L82 PathProgramCache]: Analyzing trace with hash -643099645, now seen corresponding path program 6 times [2020-10-06 01:15:24,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:24,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399386150] [2020-10-06 01:15:24,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:15:24,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399386150] [2020-10-06 01:15:24,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:24,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:15:24,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1388875617] [2020-10-06 01:15:24,401 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:24,403 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:24,405 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-06 01:15:24,406 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:24,406 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:24,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:24,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:24,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:24,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:24,407 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-10-06 01:15:25,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:25,152 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-10-06 01:15:25,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:25,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:15:25,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:25,240 INFO L225 Difference]: With dead ends: 29379 [2020-10-06 01:15:25,240 INFO L226 Difference]: Without dead ends: 29356 [2020-10-06 01:15:25,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:25,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-06 01:15:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-10-06 01:15:25,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-06 01:15:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-06 01:15:26,048 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-06 01:15:26,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:26,049 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-06 01:15:26,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:26,049 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-06 01:15:26,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 01:15:26,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:26,051 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:26,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-06 01:15:26,052 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]=== [2020-10-06 01:15:26,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:26,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1599602836, now seen corresponding path program 1 times [2020-10-06 01:15:26,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:26,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843222994] [2020-10-06 01:15:26,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:15:26,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843222994] [2020-10-06 01:15:26,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61235662] [2020-10-06 01:15:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:26,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:15:26,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:15:26,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:26,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-06 01:15:26,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1268429674] [2020-10-06 01:15:26,212 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:26,216 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:26,226 INFO L258 McrAutomatonBuilder]: Finished intersection with 48 states and 71 transitions. [2020-10-06 01:15:26,226 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:26,303 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:26,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:15:26,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:26,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:15:26,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:15:26,304 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 7 states. [2020-10-06 01:15:26,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:26,684 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-06 01:15:26,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:15:26,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-06 01:15:26,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:26,742 INFO L225 Difference]: With dead ends: 19727 [2020-10-06 01:15:26,742 INFO L226 Difference]: Without dead ends: 19703 [2020-10-06 01:15:26,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:15:26,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-06 01:15:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-06 01:15:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-06 01:15:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-06 01:15:27,102 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-06 01:15:27,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:27,102 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-06 01:15:27,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:15:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-06 01:15:27,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 01:15:27,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:27,106 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:27,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-06 01:15:27,314 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]=== [2020-10-06 01:15:27,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:27,314 INFO L82 PathProgramCache]: Analyzing trace with hash 72758744, now seen corresponding path program 1 times [2020-10-06 01:15:27,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:27,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15176428] [2020-10-06 01:15:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-06 01:15:27,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15176428] [2020-10-06 01:15:27,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858429401] [2020-10-06 01:15:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:27,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:15:27,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-06 01:15:27,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:27,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-06 01:15:27,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1584935152] [2020-10-06 01:15:27,455 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:27,457 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:27,464 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 55 transitions. [2020-10-06 01:15:27,464 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:27,487 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:27,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:15:27,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:27,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:15:27,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:15:27,489 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 7 states. [2020-10-06 01:15:27,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:27,814 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-10-06 01:15:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:15:27,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-06 01:15:27,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:27,879 INFO L225 Difference]: With dead ends: 20694 [2020-10-06 01:15:27,880 INFO L226 Difference]: Without dead ends: 20666 [2020-10-06 01:15:27,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:15:27,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-10-06 01:15:28,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-10-06 01:15:28,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-06 01:15:28,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-10-06 01:15:28,291 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-10-06 01:15:28,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:28,292 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-10-06 01:15:28,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:15:28,292 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-10-06 01:15:28,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 01:15:28,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:28,295 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:28,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:28,509 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]=== [2020-10-06 01:15:28,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:28,509 INFO L82 PathProgramCache]: Analyzing trace with hash -328675496, now seen corresponding path program 1 times [2020-10-06 01:15:28,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:28,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019033583] [2020-10-06 01:15:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-06 01:15:28,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019033583] [2020-10-06 01:15:28,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140993935] [2020-10-06 01:15:28,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:28,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:15:28,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-06 01:15:28,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:28,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-06 01:15:28,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [996411866] [2020-10-06 01:15:28,625 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:28,628 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:28,633 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 39 transitions. [2020-10-06 01:15:28,633 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:28,645 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:28,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:15:28,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:28,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:15:28,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:15:28,647 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 7 states. [2020-10-06 01:15:28,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:28,943 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-10-06 01:15:28,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:15:28,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-06 01:15:28,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:29,005 INFO L225 Difference]: With dead ends: 21396 [2020-10-06 01:15:29,006 INFO L226 Difference]: Without dead ends: 21359 [2020-10-06 01:15:29,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:15:29,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-10-06 01:15:29,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-10-06 01:15:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-06 01:15:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-06 01:15:29,544 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-06 01:15:29,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:29,544 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-06 01:15:29,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:15:29,544 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-06 01:15:29,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 01:15:29,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:29,546 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:29,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-06 01:15:29,747 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]=== [2020-10-06 01:15:29,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:29,748 INFO L82 PathProgramCache]: Analyzing trace with hash -150456492, now seen corresponding path program 2 times [2020-10-06 01:15:29,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:29,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390744120] [2020-10-06 01:15:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:15:29,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390744120] [2020-10-06 01:15:29,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:29,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:15:29,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1825517914] [2020-10-06 01:15:29,788 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:29,790 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:29,794 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-06 01:15:29,794 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:29,794 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:29,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:15:29,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:29,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:15:29,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:15:29,795 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-06 01:15:30,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:30,092 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-10-06 01:15:30,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:15:30,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-06 01:15:30,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:30,150 INFO L225 Difference]: With dead ends: 21489 [2020-10-06 01:15:30,151 INFO L226 Difference]: Without dead ends: 21452 [2020-10-06 01:15:30,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:15:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-10-06 01:15:30,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-10-06 01:15:30,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-06 01:15:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-06 01:15:30,535 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-06 01:15:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:30,536 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-06 01:15:30,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:15:30,536 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-06 01:15:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 01:15:30,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:30,538 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:30,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-06 01:15:30,539 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]=== [2020-10-06 01:15:30,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:30,539 INFO L82 PathProgramCache]: Analyzing trace with hash -150471558, now seen corresponding path program 2 times [2020-10-06 01:15:30,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:30,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473705290] [2020-10-06 01:15:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:15:30,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473705290] [2020-10-06 01:15:30,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:30,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:15:30,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1706929295] [2020-10-06 01:15:30,584 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:30,586 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:30,589 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-06 01:15:30,589 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:30,590 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:30,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:15:30,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:30,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:15:30,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:15:30,590 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-06 01:15:30,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:30,907 INFO L93 Difference]: Finished difference Result 21218 states and 86469 transitions. [2020-10-06 01:15:30,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:15:30,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-06 01:15:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:30,969 INFO L225 Difference]: With dead ends: 21218 [2020-10-06 01:15:30,969 INFO L226 Difference]: Without dead ends: 21181 [2020-10-06 01:15:30,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:15:31,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21181 states. [2020-10-06 01:15:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21181 to 9396. [2020-10-06 01:15:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-06 01:15:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-06 01:15:31,367 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-06 01:15:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:31,367 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-06 01:15:31,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:15:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-06 01:15:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 01:15:31,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:31,369 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:31,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-06 01:15:31,370 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]=== [2020-10-06 01:15:31,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:31,370 INFO L82 PathProgramCache]: Analyzing trace with hash -150449920, now seen corresponding path program 2 times [2020-10-06 01:15:31,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:31,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101158435] [2020-10-06 01:15:31,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:15:31,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101158435] [2020-10-06 01:15:31,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:31,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:15:31,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [784478495] [2020-10-06 01:15:31,417 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:31,419 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:31,423 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-06 01:15:31,424 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:31,424 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:31,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:15:31,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:31,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:15:31,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:15:31,425 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-06 01:15:31,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:31,739 INFO L93 Difference]: Finished difference Result 21047 states and 85702 transitions. [2020-10-06 01:15:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:15:31,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-06 01:15:31,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:32,013 INFO L225 Difference]: With dead ends: 21047 [2020-10-06 01:15:32,014 INFO L226 Difference]: Without dead ends: 21010 [2020-10-06 01:15:32,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:15:32,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21010 states. [2020-10-06 01:15:32,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21010 to 9426. [2020-10-06 01:15:32,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-06 01:15:32,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-06 01:15:32,382 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-06 01:15:32,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:32,382 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-06 01:15:32,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:15:32,383 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-06 01:15:32,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:32,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:32,386 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:32,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-06 01:15:32,386 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]=== [2020-10-06 01:15:32,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:32,386 INFO L82 PathProgramCache]: Analyzing trace with hash -156736363, now seen corresponding path program 1 times [2020-10-06 01:15:32,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:32,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941393949] [2020-10-06 01:15:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:32,446 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:15:32,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941393949] [2020-10-06 01:15:32,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869978176] [2020-10-06 01:15:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:32,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:32,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:15:32,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:32,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:32,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [853077970] [2020-10-06 01:15:32,547 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:32,551 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:32,572 INFO L258 McrAutomatonBuilder]: Finished intersection with 66 states and 105 transitions. [2020-10-06 01:15:32,572 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:32,671 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:32,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:32,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:32,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:32,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:32,672 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 9 states. [2020-10-06 01:15:33,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:33,721 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-06 01:15:33,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:33,722 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:33,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:33,855 INFO L225 Difference]: With dead ends: 30145 [2020-10-06 01:15:33,855 INFO L226 Difference]: Without dead ends: 30125 [2020-10-06 01:15:33,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:34,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-06 01:15:34,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-10-06 01:15:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-10-06 01:15:34,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-10-06 01:15:34,602 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-10-06 01:15:34,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:34,602 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-10-06 01:15:34,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:34,603 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-10-06 01:15:34,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:34,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:34,606 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:34,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-06 01:15:34,806 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]=== [2020-10-06 01:15:34,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:34,807 INFO L82 PathProgramCache]: Analyzing trace with hash -558170603, now seen corresponding path program 1 times [2020-10-06 01:15:34,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:34,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159898063] [2020-10-06 01:15:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:34,859 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-06 01:15:34,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159898063] [2020-10-06 01:15:34,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647117368] [2020-10-06 01:15:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:34,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:34,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-06 01:15:34,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:34,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:34,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [853908556] [2020-10-06 01:15:34,947 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:34,949 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:34,957 INFO L258 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-10-06 01:15:34,957 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:35,044 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:35,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:35,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:35,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:35,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:35,048 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 9 states. [2020-10-06 01:15:35,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:35,893 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-10-06 01:15:35,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:35,894 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:35,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:35,971 INFO L225 Difference]: With dead ends: 29696 [2020-10-06 01:15:35,971 INFO L226 Difference]: Without dead ends: 29676 [2020-10-06 01:15:35,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-10-06 01:15:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-10-06 01:15:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-06 01:15:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-06 01:15:36,624 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-06 01:15:36,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:36,624 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-06 01:15:36,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:36,624 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-06 01:15:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:36,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:36,627 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:36,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-06 01:15:36,828 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]=== [2020-10-06 01:15:36,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:36,829 INFO L82 PathProgramCache]: Analyzing trace with hash -379966665, now seen corresponding path program 2 times [2020-10-06 01:15:36,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:36,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040766225] [2020-10-06 01:15:36,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:15:36,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040766225] [2020-10-06 01:15:36,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758451122] [2020-10-06 01:15:36,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:36,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 01:15:36,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:15:36,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:36,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:15:36,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:36,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:36,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [813407026] [2020-10-06 01:15:36,974 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:36,977 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:36,989 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-06 01:15:36,989 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:37,045 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:37,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:37,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:37,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:37,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:37,046 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 9 states. [2020-10-06 01:15:38,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:38,062 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-06 01:15:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:38,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:38,200 INFO L225 Difference]: With dead ends: 29267 [2020-10-06 01:15:38,200 INFO L226 Difference]: Without dead ends: 29245 [2020-10-06 01:15:38,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:38,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-06 01:15:38,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-06 01:15:38,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-06 01:15:39,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-06 01:15:39,015 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-06 01:15:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:39,016 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-06 01:15:39,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-06 01:15:39,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:39,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:39,019 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:39,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-06 01:15:39,220 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]=== [2020-10-06 01:15:39,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:39,221 INFO L82 PathProgramCache]: Analyzing trace with hash -379945027, now seen corresponding path program 2 times [2020-10-06 01:15:39,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:39,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11105112] [2020-10-06 01:15:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:39,282 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:15:39,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11105112] [2020-10-06 01:15:39,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105197134] [2020-10-06 01:15:39,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:39,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 01:15:39,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:15:39,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:39,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:15:39,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:39,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:39,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1305962884] [2020-10-06 01:15:39,372 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:39,374 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:39,382 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-06 01:15:39,383 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:39,442 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:39,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:39,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:39,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:39,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:39,443 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 9 states. [2020-10-06 01:15:40,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:40,125 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-06 01:15:40,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:40,125 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:40,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:40,200 INFO L225 Difference]: With dead ends: 28920 [2020-10-06 01:15:40,200 INFO L226 Difference]: Without dead ends: 28898 [2020-10-06 01:15:40,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:40,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-06 01:15:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-06 01:15:40,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-06 01:15:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-06 01:15:40,673 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-06 01:15:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:40,674 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-06 01:15:40,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-06 01:15:40,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:40,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:40,678 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:40,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:40,879 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]=== [2020-10-06 01:15:40,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:40,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1211690581, now seen corresponding path program 3 times [2020-10-06 01:15:40,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:40,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842565568] [2020-10-06 01:15:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-06 01:15:40,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842565568] [2020-10-06 01:15:40,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127927764] [2020-10-06 01:15:40,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:41,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-06 01:15:41,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:15:41,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:41,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-06 01:15:41,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:41,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:41,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1949301881] [2020-10-06 01:15:41,094 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:41,096 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:41,109 INFO L258 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-10-06 01:15:41,109 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:41,171 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:41,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:41,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:41,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:41,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:41,172 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 9 states. [2020-10-06 01:15:41,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:41,996 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-10-06 01:15:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:41,997 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:41,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:42,114 INFO L225 Difference]: With dead ends: 29038 [2020-10-06 01:15:42,115 INFO L226 Difference]: Without dead ends: 29018 [2020-10-06 01:15:42,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:42,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-10-06 01:15:42,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-10-06 01:15:42,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-06 01:15:42,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-10-06 01:15:42,588 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-10-06 01:15:42,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:42,589 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-10-06 01:15:42,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:42,589 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-10-06 01:15:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:42,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:42,593 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:42,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-06 01:15:42,793 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]=== [2020-10-06 01:15:42,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:42,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1201691221, now seen corresponding path program 4 times [2020-10-06 01:15:42,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:42,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482940991] [2020-10-06 01:15:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-06 01:15:42,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482940991] [2020-10-06 01:15:42,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338609468] [2020-10-06 01:15:42,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:42,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 01:15:42,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:15:42,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:42,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-06 01:15:42,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:42,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:42,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [213518918] [2020-10-06 01:15:42,932 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:42,934 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:42,945 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-06 01:15:42,945 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:42,979 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:42,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:42,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:42,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:42,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:42,980 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 9 states. [2020-10-06 01:15:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:43,730 INFO L93 Difference]: Finished difference Result 29283 states and 112236 transitions. [2020-10-06 01:15:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:43,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:43,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:43,807 INFO L225 Difference]: With dead ends: 29283 [2020-10-06 01:15:43,807 INFO L226 Difference]: Without dead ends: 29261 [2020-10-06 01:15:43,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:43,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29261 states. [2020-10-06 01:15:44,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29261 to 8997. [2020-10-06 01:15:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8997 states. [2020-10-06 01:15:44,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8997 states to 8997 states and 40842 transitions. [2020-10-06 01:15:44,269 INFO L78 Accepts]: Start accepts. Automaton has 8997 states and 40842 transitions. Word has length 25 [2020-10-06 01:15:44,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:44,269 INFO L479 AbstractCegarLoop]: Abstraction has 8997 states and 40842 transitions. [2020-10-06 01:15:44,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 8997 states and 40842 transitions. [2020-10-06 01:15:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:44,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:44,273 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:44,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:44,474 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]=== [2020-10-06 01:15:44,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:44,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1201697793, now seen corresponding path program 1 times [2020-10-06 01:15:44,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:44,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002678378] [2020-10-06 01:15:44,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-06 01:15:44,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002678378] [2020-10-06 01:15:44,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692142126] [2020-10-06 01:15:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:44,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:44,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-06 01:15:44,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:44,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:44,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [54782924] [2020-10-06 01:15:44,619 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:44,621 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:44,627 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-06 01:15:44,628 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:44,653 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:44,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:44,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:44,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:44,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:44,654 INFO L87 Difference]: Start difference. First operand 8997 states and 40842 transitions. Second operand 9 states. [2020-10-06 01:15:45,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:45,416 INFO L93 Difference]: Finished difference Result 29105 states and 111801 transitions. [2020-10-06 01:15:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:45,417 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:45,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:45,499 INFO L225 Difference]: With dead ends: 29105 [2020-10-06 01:15:45,499 INFO L226 Difference]: Without dead ends: 29085 [2020-10-06 01:15:45,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:45,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29085 states. [2020-10-06 01:15:46,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29085 to 8955. [2020-10-06 01:15:46,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8955 states. [2020-10-06 01:15:46,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 40593 transitions. [2020-10-06 01:15:46,134 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 40593 transitions. Word has length 25 [2020-10-06 01:15:46,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:46,135 INFO L479 AbstractCegarLoop]: Abstraction has 8955 states and 40593 transitions. [2020-10-06 01:15:46,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:46,135 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 40593 transitions. [2020-10-06 01:15:46,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:46,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:46,138 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:46,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-10-06 01:15:46,339 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]=== [2020-10-06 01:15:46,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:46,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1218006273, now seen corresponding path program 2 times [2020-10-06 01:15:46,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:46,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563179282] [2020-10-06 01:15:46,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-06 01:15:46,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563179282] [2020-10-06 01:15:46,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733968618] [2020-10-06 01:15:46,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:46,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 01:15:46,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:15:46,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:46,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-06 01:15:46,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:46,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:46,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1521306882] [2020-10-06 01:15:46,476 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:46,478 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:46,487 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-06 01:15:46,487 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:46,535 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:46,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:46,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:46,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:46,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:46,536 INFO L87 Difference]: Start difference. First operand 8955 states and 40593 transitions. Second operand 9 states. [2020-10-06 01:15:47,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:47,249 INFO L93 Difference]: Finished difference Result 28806 states and 110558 transitions. [2020-10-06 01:15:47,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:47,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:47,324 INFO L225 Difference]: With dead ends: 28806 [2020-10-06 01:15:47,324 INFO L226 Difference]: Without dead ends: 28779 [2020-10-06 01:15:47,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:47,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2020-10-06 01:15:47,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 8841. [2020-10-06 01:15:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-06 01:15:47,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-10-06 01:15:47,770 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-10-06 01:15:47,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:47,770 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-10-06 01:15:47,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:47,771 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-10-06 01:15:47,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:47,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:47,775 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:47,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:47,983 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]=== [2020-10-06 01:15:47,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:47,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1980442581, now seen corresponding path program 3 times [2020-10-06 01:15:47,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:47,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822018877] [2020-10-06 01:15:47,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-06 01:15:48,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822018877] [2020-10-06 01:15:48,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085783865] [2020-10-06 01:15:48,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:48,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-06 01:15:48,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:15:48,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:48,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-06 01:15:48,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:48,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:48,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [915313658] [2020-10-06 01:15:48,126 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:48,128 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:48,134 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-06 01:15:48,135 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:48,172 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:48,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:48,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:48,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:48,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:48,173 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 9 states. [2020-10-06 01:15:48,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:48,859 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-06 01:15:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:48,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:48,932 INFO L225 Difference]: With dead ends: 28636 [2020-10-06 01:15:48,932 INFO L226 Difference]: Without dead ends: 28616 [2020-10-06 01:15:48,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:49,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-06 01:15:49,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-10-06 01:15:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-10-06 01:15:49,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-10-06 01:15:49,376 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-10-06 01:15:49,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:49,377 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-10-06 01:15:49,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:49,377 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-10-06 01:15:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:49,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:49,380 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:49,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-06 01:15:49,581 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]=== [2020-10-06 01:15:49,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:49,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1965964155, now seen corresponding path program 3 times [2020-10-06 01:15:49,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:49,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910338900] [2020-10-06 01:15:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-06 01:15:49,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910338900] [2020-10-06 01:15:49,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994653797] [2020-10-06 01:15:49,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:49,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-06 01:15:49,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:15:49,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:49,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-06 01:15:49,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:49,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:49,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1545397484] [2020-10-06 01:15:49,718 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:49,721 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:49,731 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-06 01:15:49,731 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:49,760 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:49,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:49,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:49,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:49,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:49,762 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 9 states. [2020-10-06 01:15:50,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:50,619 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-06 01:15:50,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:50,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:50,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:50,708 INFO L225 Difference]: With dead ends: 28297 [2020-10-06 01:15:50,708 INFO L226 Difference]: Without dead ends: 28277 [2020-10-06 01:15:50,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:50,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-06 01:15:51,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-10-06 01:15:51,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-06 01:15:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-10-06 01:15:51,135 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-10-06 01:15:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:51,135 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-10-06 01:15:51,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:51,135 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-10-06 01:15:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:51,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:51,139 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:51,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:51,339 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]=== [2020-10-06 01:15:51,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:51,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1970443221, now seen corresponding path program 4 times [2020-10-06 01:15:51,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:51,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760487628] [2020-10-06 01:15:51,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-06 01:15:51,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760487628] [2020-10-06 01:15:51,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71272370] [2020-10-06 01:15:51,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:51,480 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 01:15:51,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:15:51,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:51,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-06 01:15:51,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:51,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:51,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1824598819] [2020-10-06 01:15:51,486 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:51,489 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:51,494 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-10-06 01:15:51,495 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:51,510 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:51,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:51,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:51,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:51,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:51,511 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 9 states. [2020-10-06 01:15:52,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:52,257 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-06 01:15:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:52,257 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:52,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:52,339 INFO L225 Difference]: With dead ends: 28565 [2020-10-06 01:15:52,339 INFO L226 Difference]: Without dead ends: 28538 [2020-10-06 01:15:52,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:52,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-06 01:15:52,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-06 01:15:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-06 01:15:52,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-06 01:15:52,798 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-06 01:15:52,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:52,798 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-06 01:15:52,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:52,799 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-06 01:15:52,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:52,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:52,802 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:53,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-06 01:15:53,010 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]=== [2020-10-06 01:15:53,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:53,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1970428155, now seen corresponding path program 4 times [2020-10-06 01:15:53,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:53,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684376876] [2020-10-06 01:15:53,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:53,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-06 01:15:53,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684376876] [2020-10-06 01:15:53,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948800860] [2020-10-06 01:15:53,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:53,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 01:15:53,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:15:53,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:15:53,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:15:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-06 01:15:53,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:15:53,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 01:15:53,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1765349119] [2020-10-06 01:15:53,163 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:53,165 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:53,171 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-10-06 01:15:53,172 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:53,179 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:53,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:53,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:53,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:53,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:53,180 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 9 states. [2020-10-06 01:15:53,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:53,856 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-06 01:15:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:53,857 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:53,933 INFO L225 Difference]: With dead ends: 28213 [2020-10-06 01:15:53,934 INFO L226 Difference]: Without dead ends: 28186 [2020-10-06 01:15:53,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:54,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-06 01:15:54,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-06 01:15:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-06 01:15:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-06 01:15:54,375 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-06 01:15:54,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:54,376 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-06 01:15:54,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:54,376 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-06 01:15:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:54,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:54,379 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:54,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:15:54,580 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]=== [2020-10-06 01:15:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:54,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1943046054, now seen corresponding path program 1 times [2020-10-06 01:15:54,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:54,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614234356] [2020-10-06 01:15:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-06 01:15:54,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614234356] [2020-10-06 01:15:54,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:54,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:15:54,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [21215010] [2020-10-06 01:15:54,608 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:54,611 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:54,615 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-06 01:15:54,615 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:54,616 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:54,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:15:54,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:54,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:15:54,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:15:54,617 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 5 states. [2020-10-06 01:15:54,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:54,832 INFO L93 Difference]: Finished difference Result 13647 states and 59401 transitions. [2020-10-06 01:15:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:15:54,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-06 01:15:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:54,899 INFO L225 Difference]: With dead ends: 13647 [2020-10-06 01:15:54,900 INFO L226 Difference]: Without dead ends: 13615 [2020-10-06 01:15:54,900 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 [2020-10-06 01:15:55,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13615 states. [2020-10-06 01:15:55,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13615 to 9928. [2020-10-06 01:15:55,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9928 states. [2020-10-06 01:15:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 44651 transitions. [2020-10-06 01:15:55,554 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 44651 transitions. Word has length 25 [2020-10-06 01:15:55,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:55,557 INFO L479 AbstractCegarLoop]: Abstraction has 9928 states and 44651 transitions. [2020-10-06 01:15:55,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:15:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 44651 transitions. [2020-10-06 01:15:55,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:55,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:55,565 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:55,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-06 01:15:55,565 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]=== [2020-10-06 01:15:55,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:55,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1440199159, now seen corresponding path program 5 times [2020-10-06 01:15:55,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:55,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906048413] [2020-10-06 01:15:55,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:15:55,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906048413] [2020-10-06 01:15:55,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:55,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:15:55,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1178836498] [2020-10-06 01:15:55,665 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:55,670 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:55,680 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-06 01:15:55,680 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:55,681 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:55,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:55,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:55,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:55,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:55,682 INFO L87 Difference]: Start difference. First operand 9928 states and 44651 transitions. Second operand 9 states. [2020-10-06 01:15:56,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:56,575 INFO L93 Difference]: Finished difference Result 31816 states and 123346 transitions. [2020-10-06 01:15:56,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:56,576 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:56,663 INFO L225 Difference]: With dead ends: 31816 [2020-10-06 01:15:56,664 INFO L226 Difference]: Without dead ends: 31790 [2020-10-06 01:15:56,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:56,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31790 states. [2020-10-06 01:15:57,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31790 to 9766. [2020-10-06 01:15:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9766 states. [2020-10-06 01:15:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 43873 transitions. [2020-10-06 01:15:57,197 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 43873 transitions. Word has length 25 [2020-10-06 01:15:57,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:57,197 INFO L479 AbstractCegarLoop]: Abstraction has 9766 states and 43873 transitions. [2020-10-06 01:15:57,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:57,197 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 43873 transitions. [2020-10-06 01:15:57,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:57,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:57,201 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:57,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-06 01:15:57,201 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]=== [2020-10-06 01:15:57,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:57,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1440220797, now seen corresponding path program 5 times [2020-10-06 01:15:57,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:57,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732140790] [2020-10-06 01:15:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:15:57,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732140790] [2020-10-06 01:15:57,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:57,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:15:57,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [65127524] [2020-10-06 01:15:57,264 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:57,266 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:57,272 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-06 01:15:57,272 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:57,273 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:57,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:57,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:57,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:57,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:57,273 INFO L87 Difference]: Start difference. First operand 9766 states and 43873 transitions. Second operand 9 states. [2020-10-06 01:15:57,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:57,970 INFO L93 Difference]: Finished difference Result 31277 states and 121098 transitions. [2020-10-06 01:15:57,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:57,971 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:57,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:58,046 INFO L225 Difference]: With dead ends: 31277 [2020-10-06 01:15:58,046 INFO L226 Difference]: Without dead ends: 31251 [2020-10-06 01:15:58,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:58,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31251 states. [2020-10-06 01:15:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31251 to 9592. [2020-10-06 01:15:58,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9592 states. [2020-10-06 01:15:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 43051 transitions. [2020-10-06 01:15:58,534 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 43051 transitions. Word has length 25 [2020-10-06 01:15:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:15:58,534 INFO L479 AbstractCegarLoop]: Abstraction has 9592 states and 43051 transitions. [2020-10-06 01:15:58,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:15:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 43051 transitions. [2020-10-06 01:15:58,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:15:58,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:15:58,538 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:15:58,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-06 01:15:58,538 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]=== [2020-10-06 01:15:58,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:15:58,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1425735799, now seen corresponding path program 6 times [2020-10-06 01:15:58,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:15:58,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783620384] [2020-10-06 01:15:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:15:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:15:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:15:58,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783620384] [2020-10-06 01:15:58,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:15:58,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:15:58,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1609928535] [2020-10-06 01:15:58,599 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:15:58,601 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:15:58,607 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-06 01:15:58,607 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:15:58,608 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:15:58,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:15:58,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:15:58,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:15:58,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:15:58,609 INFO L87 Difference]: Start difference. First operand 9592 states and 43051 transitions. Second operand 9 states. [2020-10-06 01:15:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:15:59,564 INFO L93 Difference]: Finished difference Result 30952 states and 119650 transitions. [2020-10-06 01:15:59,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:15:59,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:15:59,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:15:59,687 INFO L225 Difference]: With dead ends: 30952 [2020-10-06 01:15:59,688 INFO L226 Difference]: Without dead ends: 30919 [2020-10-06 01:15:59,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:15:59,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30919 states. [2020-10-06 01:16:00,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30919 to 9246. [2020-10-06 01:16:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9246 states. [2020-10-06 01:16:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9246 states to 9246 states and 41509 transitions. [2020-10-06 01:16:00,305 INFO L78 Accepts]: Start accepts. Automaton has 9246 states and 41509 transitions. Word has length 25 [2020-10-06 01:16:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:00,305 INFO L479 AbstractCegarLoop]: Abstraction has 9246 states and 41509 transitions. [2020-10-06 01:16:00,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:16:00,305 INFO L276 IsEmpty]: Start isEmpty. Operand 9246 states and 41509 transitions. [2020-10-06 01:16:00,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:16:00,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:00,308 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:00,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-06 01:16:00,309 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]=== [2020-10-06 01:16:00,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:00,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1425742371, now seen corresponding path program 5 times [2020-10-06 01:16:00,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:00,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541263657] [2020-10-06 01:16:00,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:16:00,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541263657] [2020-10-06 01:16:00,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:00,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:16:00,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1763815305] [2020-10-06 01:16:00,366 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:00,368 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:00,372 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-06 01:16:00,372 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:00,372 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:00,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:16:00,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:00,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:16:00,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:16:00,373 INFO L87 Difference]: Start difference. First operand 9246 states and 41509 transitions. Second operand 9 states. [2020-10-06 01:16:01,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:01,225 INFO L93 Difference]: Finished difference Result 30541 states and 117947 transitions. [2020-10-06 01:16:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:16:01,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:16:01,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:01,302 INFO L225 Difference]: With dead ends: 30541 [2020-10-06 01:16:01,302 INFO L226 Difference]: Without dead ends: 30515 [2020-10-06 01:16:01,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:16:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30515 states. [2020-10-06 01:16:01,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30515 to 9136. [2020-10-06 01:16:01,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9136 states. [2020-10-06 01:16:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 40999 transitions. [2020-10-06 01:16:01,783 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 40999 transitions. Word has length 25 [2020-10-06 01:16:01,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:01,783 INFO L479 AbstractCegarLoop]: Abstraction has 9136 states and 40999 transitions. [2020-10-06 01:16:01,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:16:01,783 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 40999 transitions. [2020-10-06 01:16:01,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:16:01,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:01,786 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:01,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-06 01:16:01,787 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]=== [2020-10-06 01:16:01,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:01,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1446529917, now seen corresponding path program 6 times [2020-10-06 01:16:01,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:01,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452560981] [2020-10-06 01:16:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:16:01,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452560981] [2020-10-06 01:16:01,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:01,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:16:01,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1935897658] [2020-10-06 01:16:01,860 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:01,863 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:01,871 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-06 01:16:01,871 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:01,872 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:01,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:16:01,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:01,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:16:01,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:16:01,873 INFO L87 Difference]: Start difference. First operand 9136 states and 40999 transitions. Second operand 9 states. [2020-10-06 01:16:02,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:02,938 INFO L93 Difference]: Finished difference Result 30263 states and 116773 transitions. [2020-10-06 01:16:02,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:16:02,939 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:16:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:03,082 INFO L225 Difference]: With dead ends: 30263 [2020-10-06 01:16:03,083 INFO L226 Difference]: Without dead ends: 30230 [2020-10-06 01:16:03,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:16:03,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30230 states. [2020-10-06 01:16:03,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30230 to 8877. [2020-10-06 01:16:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8877 states. [2020-10-06 01:16:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8877 states to 8877 states and 39872 transitions. [2020-10-06 01:16:03,776 INFO L78 Accepts]: Start accepts. Automaton has 8877 states and 39872 transitions. Word has length 25 [2020-10-06 01:16:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:03,777 INFO L479 AbstractCegarLoop]: Abstraction has 8877 states and 39872 transitions. [2020-10-06 01:16:03,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:16:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8877 states and 39872 transitions. [2020-10-06 01:16:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:16:03,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:03,780 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:03,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-06 01:16:03,780 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]=== [2020-10-06 01:16:03,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:03,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1446514851, now seen corresponding path program 6 times [2020-10-06 01:16:03,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:03,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188297763] [2020-10-06 01:16:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:16:03,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188297763] [2020-10-06 01:16:03,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:03,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:16:03,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2138352592] [2020-10-06 01:16:03,848 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:03,852 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:03,858 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-06 01:16:03,859 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:03,859 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:03,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:16:03,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:03,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:16:03,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:16:03,861 INFO L87 Difference]: Start difference. First operand 8877 states and 39872 transitions. Second operand 9 states. [2020-10-06 01:16:04,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:04,674 INFO L93 Difference]: Finished difference Result 29856 states and 115140 transitions. [2020-10-06 01:16:04,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:16:04,674 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:16:04,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:04,761 INFO L225 Difference]: With dead ends: 29856 [2020-10-06 01:16:04,761 INFO L226 Difference]: Without dead ends: 29823 [2020-10-06 01:16:04,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:16:04,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29823 states. [2020-10-06 01:16:05,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29823 to 8560. [2020-10-06 01:16:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-06 01:16:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-06 01:16:05,236 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-06 01:16:05,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:05,237 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-06 01:16:05,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:16:05,237 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-06 01:16:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-06 01:16:05,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:05,241 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:05,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-06 01:16:05,241 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]=== [2020-10-06 01:16:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:05,241 INFO L82 PathProgramCache]: Analyzing trace with hash -110415564, now seen corresponding path program 1 times [2020-10-06 01:16:05,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:05,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106794693] [2020-10-06 01:16:05,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 01:16:05,251 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 01:16:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 01:16:05,257 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 01:16:05,264 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 01:16:05,264 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 01:16:05,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-06 01:16:05,265 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 01:16:05,265 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-06 01:16:05,280 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,281 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,282 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,282 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,282 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,283 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,283 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,283 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,283 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,284 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,284 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,285 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,285 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,286 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,286 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,286 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,286 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,286 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,286 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,287 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,287 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,287 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,287 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,287 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,287 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,288 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,288 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,289 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,298 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,298 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,299 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,299 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,299 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,299 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,299 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,299 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,300 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,300 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,300 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,300 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,300 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,311 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,311 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,311 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,312 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,313 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,313 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,313 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,313 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,314 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,315 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,315 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,315 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,315 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,317 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,317 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,317 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,317 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,317 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,319 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,319 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,319 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,320 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,320 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,321 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,322 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,322 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,324 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,326 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,327 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,327 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,327 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,328 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,329 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,329 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,329 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,329 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,331 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,332 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,332 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,333 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,334 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:16:05,335 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-06 01:16:05,335 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:16:05,335 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:16:05,335 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:16:05,335 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:16:05,336 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:16:05,336 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:16:05,336 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:16:05,336 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:16:05,338 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 141 transitions, 402 flow [2020-10-06 01:16:05,338 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-10-06 01:16:05,360 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-10-06 01:16:05,360 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-06 01:16:05,362 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-10-06 01:16:05,368 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-10-06 01:16:05,386 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-10-06 01:16:05,386 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-06 01:16:05,388 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-10-06 01:16:05,394 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3612 [2020-10-06 01:16:05,394 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:16:07,250 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-06 01:16:07,556 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4226 [2020-10-06 01:16:07,556 INFO L214 etLargeBlockEncoding]: Total number of compositions: 127 [2020-10-06 01:16:07,556 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-06 01:16:09,224 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-06 01:16:09,224 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-06 01:16:09,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-06 01:16:09,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:09,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-06 01:16:09,225 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]=== [2020-10-06 01:16:09,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:09,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1291919, now seen corresponding path program 1 times [2020-10-06 01:16:09,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:09,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497660988] [2020-10-06 01:16:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:09,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:16:09,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497660988] [2020-10-06 01:16:09,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:09,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:16:09,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1653765261] [2020-10-06 01:16:09,242 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:09,242 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:09,242 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-06 01:16:09,242 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:09,242 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:09,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:16:09,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:09,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:16:09,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:16:09,243 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-06 01:16:09,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:09,442 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-06 01:16:09,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:16:09,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-06 01:16:09,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:09,511 INFO L225 Difference]: With dead ends: 17885 [2020-10-06 01:16:09,511 INFO L226 Difference]: Without dead ends: 16791 [2020-10-06 01:16:09,512 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 [2020-10-06 01:16:09,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-06 01:16:10,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-06 01:16:10,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-06 01:16:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-06 01:16:10,263 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-06 01:16:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:10,263 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-06 01:16:10,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:16:10,263 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-06 01:16:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:16:10,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:10,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:10,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-06 01:16:10,264 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]=== [2020-10-06 01:16:10,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:10,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1124534846, now seen corresponding path program 1 times [2020-10-06 01:16:10,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:10,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213794180] [2020-10-06 01:16:10,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:16:10,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213794180] [2020-10-06 01:16:10,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:10,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:16:10,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1758269902] [2020-10-06 01:16:10,284 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:10,285 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:10,286 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-06 01:16:10,286 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:10,286 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:10,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:16:10,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:10,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:16:10,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:16:10,287 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-06 01:16:10,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:10,542 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-06 01:16:10,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:16:10,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-06 01:16:10,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:10,644 INFO L225 Difference]: With dead ends: 30985 [2020-10-06 01:16:10,645 INFO L226 Difference]: Without dead ends: 30977 [2020-10-06 01:16:10,645 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 [2020-10-06 01:16:11,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-06 01:16:11,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-06 01:16:11,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-06 01:16:11,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-06 01:16:11,716 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-06 01:16:11,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:11,716 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-06 01:16:11,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:16:11,716 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-06 01:16:11,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 01:16:11,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:11,717 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:11,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-06 01:16:11,717 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]=== [2020-10-06 01:16:11,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:11,717 INFO L82 PathProgramCache]: Analyzing trace with hash -696216523, now seen corresponding path program 1 times [2020-10-06 01:16:11,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:11,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053551657] [2020-10-06 01:16:11,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:16:11,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053551657] [2020-10-06 01:16:11,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:11,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:16:11,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [855081912] [2020-10-06 01:16:11,745 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:11,746 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:11,747 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-06 01:16:11,747 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:11,747 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:11,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:16:11,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:11,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:16:11,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:16:11,748 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-06 01:16:12,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:12,343 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-06 01:16:12,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:16:12,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-06 01:16:12,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:12,470 INFO L225 Difference]: With dead ends: 36296 [2020-10-06 01:16:12,470 INFO L226 Difference]: Without dead ends: 36280 [2020-10-06 01:16:12,470 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 [2020-10-06 01:16:13,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-06 01:16:13,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-06 01:16:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-06 01:16:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-06 01:16:13,657 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-06 01:16:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:13,657 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-06 01:16:13,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:16:13,657 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-06 01:16:13,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:16:13,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:13,658 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:13,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-06 01:16:13,658 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]=== [2020-10-06 01:16:13,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:13,658 INFO L82 PathProgramCache]: Analyzing trace with hash -2123666531, now seen corresponding path program 1 times [2020-10-06 01:16:13,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:13,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775949943] [2020-10-06 01:16:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:16:13,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775949943] [2020-10-06 01:16:13,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565332287] [2020-10-06 01:16:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:16:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:13,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:16:13,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:16:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:16:13,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:16:13,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-06 01:16:13,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [903198854] [2020-10-06 01:16:13,802 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:13,803 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:13,804 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-06 01:16:13,804 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:13,814 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:13,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:16:13,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:13,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:16:13,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:16:13,815 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 7 states. [2020-10-06 01:16:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:14,371 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-06 01:16:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:16:14,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-06 01:16:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:14,557 INFO L225 Difference]: With dead ends: 56720 [2020-10-06 01:16:14,558 INFO L226 Difference]: Without dead ends: 56704 [2020-10-06 01:16:14,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-06 01:16:15,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-06 01:16:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-06 01:16:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-06 01:16:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-06 01:16:18,787 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-06 01:16:18,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:18,787 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-06 01:16:18,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:16:18,787 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-06 01:16:18,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:16:18,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:18,788 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:18,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-06 01:16:18,988 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]=== [2020-10-06 01:16:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:18,989 INFO L82 PathProgramCache]: Analyzing trace with hash 950817645, now seen corresponding path program 2 times [2020-10-06 01:16:18,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:18,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575387415] [2020-10-06 01:16:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 01:16:19,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575387415] [2020-10-06 01:16:19,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:19,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:16:19,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [662284361] [2020-10-06 01:16:19,023 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:19,024 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:19,026 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-06 01:16:19,026 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:19,026 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:19,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:16:19,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:19,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:16:19,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:16:19,027 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-06 01:16:19,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:19,565 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-06 01:16:19,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:16:19,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-06 01:16:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:19,746 INFO L225 Difference]: With dead ends: 58078 [2020-10-06 01:16:19,746 INFO L226 Difference]: Without dead ends: 58061 [2020-10-06 01:16:19,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:16:20,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-06 01:16:21,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-06 01:16:21,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-06 01:16:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-06 01:16:21,262 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-06 01:16:21,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:21,262 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-06 01:16:21,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:16:21,262 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-06 01:16:21,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:16:21,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:21,263 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:21,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-06 01:16:21,263 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]=== [2020-10-06 01:16:21,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:21,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2120658652, now seen corresponding path program 1 times [2020-10-06 01:16:21,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:21,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155440665] [2020-10-06 01:16:21,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:16:21,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155440665] [2020-10-06 01:16:21,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:21,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:16:21,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1250527128] [2020-10-06 01:16:21,286 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:21,287 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:21,289 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-06 01:16:21,289 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:21,289 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:21,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:16:21,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:21,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:16:21,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:16:21,290 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-06 01:16:21,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:21,609 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-06 01:16:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:16:21,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-06 01:16:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:21,741 INFO L225 Difference]: With dead ends: 41885 [2020-10-06 01:16:21,741 INFO L226 Difference]: Without dead ends: 41856 [2020-10-06 01:16:21,741 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 [2020-10-06 01:16:22,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-06 01:16:23,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-06 01:16:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-06 01:16:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-06 01:16:23,921 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-06 01:16:23,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:23,921 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-06 01:16:23,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:16:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-06 01:16:23,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:16:23,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:23,922 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:23,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-06 01:16:23,923 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]=== [2020-10-06 01:16:23,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:23,923 INFO L82 PathProgramCache]: Analyzing trace with hash 269605662, now seen corresponding path program 1 times [2020-10-06 01:16:23,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:23,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493674145] [2020-10-06 01:16:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:16:23,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493674145] [2020-10-06 01:16:23,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486425334] [2020-10-06 01:16:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:16:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:24,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:16:24,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:16:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:16:24,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:16:24,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-06 01:16:24,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [946215929] [2020-10-06 01:16:24,061 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:24,067 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:24,078 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-10-06 01:16:24,078 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:24,100 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:24,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:16:24,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:24,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:16:24,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:16:24,101 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 7 states. [2020-10-06 01:16:24,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:24,716 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-06 01:16:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:16:24,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-06 01:16:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:24,952 INFO L225 Difference]: With dead ends: 66831 [2020-10-06 01:16:24,952 INFO L226 Difference]: Without dead ends: 66807 [2020-10-06 01:16:24,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-06 01:16:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-06 01:16:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-06 01:16:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-06 01:16:26,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-06 01:16:26,792 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-06 01:16:26,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:26,792 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-06 01:16:26,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:16:26,792 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-06 01:16:26,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:16:26,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:26,793 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:26,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-06 01:16:26,994 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]=== [2020-10-06 01:16:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:26,995 INFO L82 PathProgramCache]: Analyzing trace with hash -2138468196, now seen corresponding path program 2 times [2020-10-06 01:16:26,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:26,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779276987] [2020-10-06 01:16:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:16:27,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779276987] [2020-10-06 01:16:27,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:27,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:16:27,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [520498806] [2020-10-06 01:16:27,030 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:27,031 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:27,034 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-06 01:16:27,034 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:27,034 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:27,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:16:27,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:27,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:16:27,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:16:27,035 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 7 states. [2020-10-06 01:16:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:29,583 INFO L93 Difference]: Finished difference Result 68538 states and 323189 transitions. [2020-10-06 01:16:29,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:16:29,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-06 01:16:29,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:29,849 INFO L225 Difference]: With dead ends: 68538 [2020-10-06 01:16:29,849 INFO L226 Difference]: Without dead ends: 68505 [2020-10-06 01:16:29,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:16:30,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68505 states. [2020-10-06 01:16:31,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68505 to 28061. [2020-10-06 01:16:31,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28061 states. [2020-10-06 01:16:31,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28061 states to 28061 states and 149307 transitions. [2020-10-06 01:16:31,595 INFO L78 Accepts]: Start accepts. Automaton has 28061 states and 149307 transitions. Word has length 19 [2020-10-06 01:16:31,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:31,595 INFO L479 AbstractCegarLoop]: Abstraction has 28061 states and 149307 transitions. [2020-10-06 01:16:31,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:16:31,596 INFO L276 IsEmpty]: Start isEmpty. Operand 28061 states and 149307 transitions. [2020-10-06 01:16:31,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:16:31,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:31,596 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:31,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-06 01:16:31,597 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]=== [2020-10-06 01:16:31,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:31,597 INFO L82 PathProgramCache]: Analyzing trace with hash -2138444729, now seen corresponding path program 1 times [2020-10-06 01:16:31,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:31,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513685235] [2020-10-06 01:16:31,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:16:31,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513685235] [2020-10-06 01:16:31,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:31,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:16:31,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [205389446] [2020-10-06 01:16:31,635 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:31,636 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:31,638 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-06 01:16:31,638 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:31,639 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:31,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:16:31,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:31,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:16:31,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:16:31,639 INFO L87 Difference]: Start difference. First operand 28061 states and 149307 transitions. Second operand 7 states. [2020-10-06 01:16:32,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:32,233 INFO L93 Difference]: Finished difference Result 69070 states and 326154 transitions. [2020-10-06 01:16:32,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:16:32,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-06 01:16:32,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:32,461 INFO L225 Difference]: With dead ends: 69070 [2020-10-06 01:16:32,462 INFO L226 Difference]: Without dead ends: 69037 [2020-10-06 01:16:32,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:16:33,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69037 states. [2020-10-06 01:16:34,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69037 to 28938. [2020-10-06 01:16:34,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28938 states. [2020-10-06 01:16:35,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28938 states to 28938 states and 153909 transitions. [2020-10-06 01:16:35,011 INFO L78 Accepts]: Start accepts. Automaton has 28938 states and 153909 transitions. Word has length 19 [2020-10-06 01:16:35,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:35,011 INFO L479 AbstractCegarLoop]: Abstraction has 28938 states and 153909 transitions. [2020-10-06 01:16:35,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:16:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 28938 states and 153909 transitions. [2020-10-06 01:16:35,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:16:35,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:35,012 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:35,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-06 01:16:35,012 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]=== [2020-10-06 01:16:35,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:35,013 INFO L82 PathProgramCache]: Analyzing trace with hash -2117255609, now seen corresponding path program 2 times [2020-10-06 01:16:35,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:35,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080407736] [2020-10-06 01:16:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:16:35,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080407736] [2020-10-06 01:16:35,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:35,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:16:35,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [652778540] [2020-10-06 01:16:35,055 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:35,057 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:35,060 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-10-06 01:16:35,060 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:35,091 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:35,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:16:35,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:35,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:16:35,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:16:35,092 INFO L87 Difference]: Start difference. First operand 28938 states and 153909 transitions. Second operand 7 states. [2020-10-06 01:16:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:35,912 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-06 01:16:35,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:16:35,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-06 01:16:35,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:36,166 INFO L225 Difference]: With dead ends: 70096 [2020-10-06 01:16:36,166 INFO L226 Difference]: Without dead ends: 70063 [2020-10-06 01:16:36,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:16:37,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-06 01:16:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-06 01:16:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-06 01:16:38,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-06 01:16:38,041 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-06 01:16:38,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:38,041 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-06 01:16:38,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:16:38,041 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-06 01:16:38,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:16:38,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:38,042 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:38,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-06 01:16:38,043 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]=== [2020-10-06 01:16:38,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:38,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1393024961, now seen corresponding path program 1 times [2020-10-06 01:16:38,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:38,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156131498] [2020-10-06 01:16:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:16:38,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156131498] [2020-10-06 01:16:38,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119602861] [2020-10-06 01:16:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:16:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:38,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:16:38,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:16:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:16:38,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:16:38,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:16:38,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1037187614] [2020-10-06 01:16:38,206 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:38,208 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:38,212 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-06 01:16:38,213 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:38,235 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:38,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:16:38,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:38,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:16:38,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:16:38,236 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 9 states. [2020-10-06 01:16:38,936 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-06 01:16:39,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:39,727 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-06 01:16:39,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:16:39,728 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:16:39,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:40,084 INFO L225 Difference]: With dead ends: 100731 [2020-10-06 01:16:40,084 INFO L226 Difference]: Without dead ends: 100715 [2020-10-06 01:16:40,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 01:16:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-06 01:16:42,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28723. [2020-10-06 01:16:42,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28723 states. [2020-10-06 01:16:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28723 states to 28723 states and 152772 transitions. [2020-10-06 01:16:42,440 INFO L78 Accepts]: Start accepts. Automaton has 28723 states and 152772 transitions. Word has length 21 [2020-10-06 01:16:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:42,440 INFO L479 AbstractCegarLoop]: Abstraction has 28723 states and 152772 transitions. [2020-10-06 01:16:42,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:16:42,440 INFO L276 IsEmpty]: Start isEmpty. Operand 28723 states and 152772 transitions. [2020-10-06 01:16:42,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:16:42,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:42,441 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:42,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:16:42,642 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]=== [2020-10-06 01:16:42,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:42,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1414214081, now seen corresponding path program 2 times [2020-10-06 01:16:42,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:42,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823815912] [2020-10-06 01:16:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:16:42,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823815912] [2020-10-06 01:16:42,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502818451] [2020-10-06 01:16:42,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:16:42,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 01:16:42,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:16:42,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:16:42,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:16:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:16:42,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:16:42,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:16:42,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [10245684] [2020-10-06 01:16:42,824 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:42,827 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:42,837 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-10-06 01:16:42,838 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:42,884 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:42,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:16:42,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:42,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:16:42,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:16:42,885 INFO L87 Difference]: Start difference. First operand 28723 states and 152772 transitions. Second operand 9 states. [2020-10-06 01:16:43,396 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-10-06 01:16:44,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:44,418 INFO L93 Difference]: Finished difference Result 99884 states and 444368 transitions. [2020-10-06 01:16:44,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:16:44,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:16:44,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:44,778 INFO L225 Difference]: With dead ends: 99884 [2020-10-06 01:16:44,778 INFO L226 Difference]: Without dead ends: 99863 [2020-10-06 01:16:44,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 01:16:45,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99863 states. [2020-10-06 01:16:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99863 to 28343. [2020-10-06 01:16:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-06 01:16:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-06 01:16:47,265 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-06 01:16:47,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:47,265 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-06 01:16:47,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:16:47,265 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-06 01:16:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:16:47,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:47,266 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:47,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-06 01:16:47,467 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]=== [2020-10-06 01:16:47,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:47,468 INFO L82 PathProgramCache]: Analyzing trace with hash -2073547329, now seen corresponding path program 3 times [2020-10-06 01:16:47,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:47,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702327779] [2020-10-06 01:16:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:16:47,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702327779] [2020-10-06 01:16:47,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:47,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:16:47,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [255454255] [2020-10-06 01:16:47,522 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:47,524 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:47,527 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-06 01:16:47,528 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:47,528 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:47,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:16:47,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:47,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:16:47,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:16:47,529 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 9 states. [2020-10-06 01:16:48,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:48,974 INFO L93 Difference]: Finished difference Result 100063 states and 445271 transitions. [2020-10-06 01:16:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:16:48,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:16:48,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:49,356 INFO L225 Difference]: With dead ends: 100063 [2020-10-06 01:16:49,356 INFO L226 Difference]: Without dead ends: 100047 [2020-10-06 01:16:49,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:16:50,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100047 states. [2020-10-06 01:16:51,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100047 to 27662. [2020-10-06 01:16:51,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27662 states. [2020-10-06 01:16:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27662 states to 27662 states and 147100 transitions. [2020-10-06 01:16:51,578 INFO L78 Accepts]: Start accepts. Automaton has 27662 states and 147100 transitions. Word has length 21 [2020-10-06 01:16:51,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:51,578 INFO L479 AbstractCegarLoop]: Abstraction has 27662 states and 147100 transitions. [2020-10-06 01:16:51,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:16:51,578 INFO L276 IsEmpty]: Start isEmpty. Operand 27662 states and 147100 transitions. [2020-10-06 01:16:51,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:16:51,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:51,580 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:51,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-10-06 01:16:51,580 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]=== [2020-10-06 01:16:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:51,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2051019009, now seen corresponding path program 4 times [2020-10-06 01:16:51,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:51,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570759575] [2020-10-06 01:16:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:16:51,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570759575] [2020-10-06 01:16:51,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:51,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:16:51,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1247210235] [2020-10-06 01:16:51,634 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:51,636 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:51,639 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-06 01:16:51,639 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:51,640 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:51,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:16:51,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:51,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:16:51,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:16:51,641 INFO L87 Difference]: Start difference. First operand 27662 states and 147100 transitions. Second operand 9 states. [2020-10-06 01:16:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:53,159 INFO L93 Difference]: Finished difference Result 99531 states and 442783 transitions. [2020-10-06 01:16:53,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:16:53,159 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:16:53,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:53,480 INFO L225 Difference]: With dead ends: 99531 [2020-10-06 01:16:53,480 INFO L226 Difference]: Without dead ends: 99510 [2020-10-06 01:16:53,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:16:54,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99510 states. [2020-10-06 01:16:55,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99510 to 27286. [2020-10-06 01:16:55,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27286 states. [2020-10-06 01:16:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27286 states to 27286 states and 144979 transitions. [2020-10-06 01:16:55,791 INFO L78 Accepts]: Start accepts. Automaton has 27286 states and 144979 transitions. Word has length 21 [2020-10-06 01:16:55,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:55,791 INFO L479 AbstractCegarLoop]: Abstraction has 27286 states and 144979 transitions. [2020-10-06 01:16:55,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:16:55,791 INFO L276 IsEmpty]: Start isEmpty. Operand 27286 states and 144979 transitions. [2020-10-06 01:16:55,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:16:55,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:55,793 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:55,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-10-06 01:16:55,793 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]=== [2020-10-06 01:16:55,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:55,793 INFO L82 PathProgramCache]: Analyzing trace with hash 102150333, now seen corresponding path program 1 times [2020-10-06 01:16:55,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:55,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117985252] [2020-10-06 01:16:55,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:16:55,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117985252] [2020-10-06 01:16:55,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:55,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:16:55,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [755862330] [2020-10-06 01:16:55,820 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:55,822 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:55,824 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-06 01:16:55,825 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:55,825 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:55,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:16:55,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:55,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:16:55,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:16:55,825 INFO L87 Difference]: Start difference. First operand 27286 states and 144979 transitions. Second operand 5 states. [2020-10-06 01:16:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:56,212 INFO L93 Difference]: Finished difference Result 49004 states and 248721 transitions. [2020-10-06 01:16:56,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:16:56,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-06 01:16:56,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:16:56,399 INFO L225 Difference]: With dead ends: 49004 [2020-10-06 01:16:56,400 INFO L226 Difference]: Without dead ends: 48958 [2020-10-06 01:16:56,400 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 [2020-10-06 01:16:57,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48958 states. [2020-10-06 01:16:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48958 to 33985. [2020-10-06 01:16:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33985 states. [2020-10-06 01:16:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33985 states to 33985 states and 181777 transitions. [2020-10-06 01:16:58,417 INFO L78 Accepts]: Start accepts. Automaton has 33985 states and 181777 transitions. Word has length 21 [2020-10-06 01:16:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:16:58,417 INFO L479 AbstractCegarLoop]: Abstraction has 33985 states and 181777 transitions. [2020-10-06 01:16:58,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:16:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand 33985 states and 181777 transitions. [2020-10-06 01:16:58,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:16:58,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:16:58,419 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:16:58,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-06 01:16:58,419 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]=== [2020-10-06 01:16:58,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:16:58,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1130516927, now seen corresponding path program 5 times [2020-10-06 01:16:58,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:16:58,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165738767] [2020-10-06 01:16:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:16:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:16:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:16:58,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165738767] [2020-10-06 01:16:58,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:16:58,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:16:58,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1748004124] [2020-10-06 01:16:58,468 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:16:58,470 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:16:58,475 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-06 01:16:58,475 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:16:58,526 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:16:58,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:16:58,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:16:58,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:16:58,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:16:58,527 INFO L87 Difference]: Start difference. First operand 33985 states and 181777 transitions. Second operand 9 states. [2020-10-06 01:16:59,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:16:59,808 INFO L93 Difference]: Finished difference Result 115592 states and 523747 transitions. [2020-10-06 01:16:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:16:59,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:16:59,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:17:00,195 INFO L225 Difference]: With dead ends: 115592 [2020-10-06 01:17:00,195 INFO L226 Difference]: Without dead ends: 115567 [2020-10-06 01:17:00,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:17:01,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115567 states. [2020-10-06 01:17:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115567 to 33074. [2020-10-06 01:17:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33074 states. [2020-10-06 01:17:03,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33074 states to 33074 states and 176935 transitions. [2020-10-06 01:17:03,538 INFO L78 Accepts]: Start accepts. Automaton has 33074 states and 176935 transitions. Word has length 21 [2020-10-06 01:17:03,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:17:03,539 INFO L479 AbstractCegarLoop]: Abstraction has 33074 states and 176935 transitions. [2020-10-06 01:17:03,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:17:03,539 INFO L276 IsEmpty]: Start isEmpty. Operand 33074 states and 176935 transitions. [2020-10-06 01:17:03,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:17:03,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:17:03,540 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:17:03,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-06 01:17:03,540 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]=== [2020-10-06 01:17:03,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:17:03,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1131856127, now seen corresponding path program 6 times [2020-10-06 01:17:03,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:17:03,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339701743] [2020-10-06 01:17:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:17:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:17:03,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339701743] [2020-10-06 01:17:03,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:17:03,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-06 01:17:03,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1664201396] [2020-10-06 01:17:03,593 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:17:03,595 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:17:03,599 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-10-06 01:17:03,600 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:17:03,618 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:17:03,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:17:03,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:17:03,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:17:03,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:17:03,620 INFO L87 Difference]: Start difference. First operand 33074 states and 176935 transitions. Second operand 9 states. [2020-10-06 01:17:04,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:17:04,812 INFO L93 Difference]: Finished difference Result 114402 states and 517732 transitions. [2020-10-06 01:17:04,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:17:04,812 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-06 01:17:04,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:17:05,211 INFO L225 Difference]: With dead ends: 114402 [2020-10-06 01:17:05,211 INFO L226 Difference]: Without dead ends: 114371 [2020-10-06 01:17:05,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-06 01:17:07,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114371 states. [2020-10-06 01:17:08,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114371 to 31960. [2020-10-06 01:17:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-06 01:17:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-06 01:17:08,738 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-06 01:17:08,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:17:08,738 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-06 01:17:08,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:17:08,738 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-06 01:17:08,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 01:17:08,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:17:08,740 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:17:08,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-06 01:17:08,740 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]=== [2020-10-06 01:17:08,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:17:08,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1106577557, now seen corresponding path program 1 times [2020-10-06 01:17:08,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:17:08,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676409578] [2020-10-06 01:17:08,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:17:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:17:08,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676409578] [2020-10-06 01:17:08,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813852660] [2020-10-06 01:17:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:17:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:08,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:17:08,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:17:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:17:08,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:17:08,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-06 01:17:08,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [632632687] [2020-10-06 01:17:08,894 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:17:08,895 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:17:08,902 INFO L258 McrAutomatonBuilder]: Finished intersection with 48 states and 71 transitions. [2020-10-06 01:17:08,902 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:17:08,939 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:17:08,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:17:08,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:17:08,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:17:08,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:17:08,940 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 7 states. [2020-10-06 01:17:09,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:17:09,636 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-06 01:17:09,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:17:09,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-06 01:17:09,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:17:09,898 INFO L225 Difference]: With dead ends: 75380 [2020-10-06 01:17:09,898 INFO L226 Difference]: Without dead ends: 75344 [2020-10-06 01:17:09,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-06 01:17:10,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-06 01:17:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-06 01:17:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-06 01:17:12,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-06 01:17:12,533 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-06 01:17:12,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:17:12,534 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-06 01:17:12,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:17:12,534 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-06 01:17:12,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 01:17:12,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:17:12,536 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:17:12,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:17:12,737 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]=== [2020-10-06 01:17:12,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:17:12,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1026706248, now seen corresponding path program 1 times [2020-10-06 01:17:12,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:17:12,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108663522] [2020-10-06 01:17:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:17:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:17:12,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108663522] [2020-10-06 01:17:12,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182008078] [2020-10-06 01:17:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:17:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:12,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:17:12,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:17:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:17:12,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:17:12,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-06 01:17:12,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [591513488] [2020-10-06 01:17:12,875 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:17:12,877 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:17:12,882 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 39 transitions. [2020-10-06 01:17:12,883 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:17:12,893 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2297603#(<= thr2Thread3of6ForFork0_~t~0 0), 2297560#(<= ~x~0 0)] [2020-10-06 01:17:12,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:17:12,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:17:12,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:17:12,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-06 01:17:12,894 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 9 states. [2020-10-06 01:17:13,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:17:13,619 INFO L93 Difference]: Finished difference Result 79463 states and 381713 transitions. [2020-10-06 01:17:13,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:17:13,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-06 01:17:13,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:17:13,916 INFO L225 Difference]: With dead ends: 79463 [2020-10-06 01:17:13,916 INFO L226 Difference]: Without dead ends: 79421 [2020-10-06 01:17:13,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-06 01:17:14,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79421 states. [2020-10-06 01:17:16,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79421 to 33977. [2020-10-06 01:17:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33977 states. [2020-10-06 01:17:16,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33977 states to 33977 states and 181698 transitions. [2020-10-06 01:17:16,796 INFO L78 Accepts]: Start accepts. Automaton has 33977 states and 181698 transitions. Word has length 23 [2020-10-06 01:17:16,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:17:16,797 INFO L479 AbstractCegarLoop]: Abstraction has 33977 states and 181698 transitions. [2020-10-06 01:17:16,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:17:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 33977 states and 181698 transitions. [2020-10-06 01:17:16,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 01:17:16,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:17:16,799 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:17:16,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:17:17,000 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]=== [2020-10-06 01:17:17,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:17:17,000 INFO L82 PathProgramCache]: Analyzing trace with hash -617779723, now seen corresponding path program 2 times [2020-10-06 01:17:17,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:17:17,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688680905] [2020-10-06 01:17:17,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:17:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:17:17,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688680905] [2020-10-06 01:17:17,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:17:17,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:17:17,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1327988223] [2020-10-06 01:17:17,036 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:17:17,038 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:17:17,042 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-06 01:17:17,043 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:17:17,043 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:17:17,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:17:17,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:17:17,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:17:17,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:17:17,044 INFO L87 Difference]: Start difference. First operand 33977 states and 181698 transitions. Second operand 7 states. [2020-10-06 01:17:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:17:17,744 INFO L93 Difference]: Finished difference Result 80867 states and 388763 transitions. [2020-10-06 01:17:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:17:17,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-06 01:17:17,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:17:18,050 INFO L225 Difference]: With dead ends: 80867 [2020-10-06 01:17:18,050 INFO L226 Difference]: Without dead ends: 80812 [2020-10-06 01:17:18,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:17:18,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80812 states. [2020-10-06 01:17:20,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80812 to 34223. [2020-10-06 01:17:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34223 states. [2020-10-06 01:17:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34223 states to 34223 states and 183033 transitions. [2020-10-06 01:17:20,825 INFO L78 Accepts]: Start accepts. Automaton has 34223 states and 183033 transitions. Word has length 23 [2020-10-06 01:17:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:17:20,825 INFO L479 AbstractCegarLoop]: Abstraction has 34223 states and 183033 transitions. [2020-10-06 01:17:20,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:17:20,826 INFO L276 IsEmpty]: Start isEmpty. Operand 34223 states and 183033 transitions. [2020-10-06 01:17:20,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 01:17:20,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:17:20,827 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:17:20,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-10-06 01:17:20,828 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]=== [2020-10-06 01:17:20,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:17:20,828 INFO L82 PathProgramCache]: Analyzing trace with hash -617778328, now seen corresponding path program 2 times [2020-10-06 01:17:20,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:17:20,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443117265] [2020-10-06 01:17:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:17:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:17:20,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443117265] [2020-10-06 01:17:20,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:17:20,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:17:20,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [762752329] [2020-10-06 01:17:20,862 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:17:20,864 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:17:20,867 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-06 01:17:20,868 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:17:20,868 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:17:20,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:17:20,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:17:20,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:17:20,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:17:20,869 INFO L87 Difference]: Start difference. First operand 34223 states and 183033 transitions. Second operand 7 states. [2020-10-06 01:17:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:17:21,591 INFO L93 Difference]: Finished difference Result 80887 states and 388540 transitions. [2020-10-06 01:17:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:17:21,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-06 01:17:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:17:21,917 INFO L225 Difference]: With dead ends: 80887 [2020-10-06 01:17:21,917 INFO L226 Difference]: Without dead ends: 80832 [2020-10-06 01:17:21,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:17:22,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80832 states. [2020-10-06 01:17:24,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80832 to 34508. [2020-10-06 01:17:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34508 states. [2020-10-06 01:17:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34508 states to 34508 states and 184670 transitions. [2020-10-06 01:17:24,786 INFO L78 Accepts]: Start accepts. Automaton has 34508 states and 184670 transitions. Word has length 23 [2020-10-06 01:17:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:17:24,786 INFO L479 AbstractCegarLoop]: Abstraction has 34508 states and 184670 transitions. [2020-10-06 01:17:24,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:17:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 34508 states and 184670 transitions. [2020-10-06 01:17:24,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 01:17:24,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:17:24,788 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:17:24,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-06 01:17:24,788 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]=== [2020-10-06 01:17:24,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:17:24,789 INFO L82 PathProgramCache]: Analyzing trace with hash -617756256, now seen corresponding path program 1 times [2020-10-06 01:17:24,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:17:24,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421064833] [2020-10-06 01:17:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:17:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:17:24,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421064833] [2020-10-06 01:17:24,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:17:24,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:17:24,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [543895908] [2020-10-06 01:17:24,822 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:17:24,823 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:17:24,826 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-06 01:17:24,826 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:17:24,826 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:17:24,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:17:24,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:17:24,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:17:24,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:17:24,827 INFO L87 Difference]: Start difference. First operand 34508 states and 184670 transitions. Second operand 7 states. [2020-10-06 01:17:25,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:17:25,554 INFO L93 Difference]: Finished difference Result 83313 states and 401031 transitions. [2020-10-06 01:17:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:17:25,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-06 01:17:25,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:17:25,873 INFO L225 Difference]: With dead ends: 83313 [2020-10-06 01:17:25,874 INFO L226 Difference]: Without dead ends: 83258 [2020-10-06 01:17:25,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:17:26,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83258 states. [2020-10-06 01:17:28,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83258 to 36258. [2020-10-06 01:17:28,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36258 states. [2020-10-06 01:17:29,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36258 states to 36258 states and 193887 transitions. [2020-10-06 01:17:29,030 INFO L78 Accepts]: Start accepts. Automaton has 36258 states and 193887 transitions. Word has length 23 [2020-10-06 01:17:29,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:17:29,030 INFO L479 AbstractCegarLoop]: Abstraction has 36258 states and 193887 transitions. [2020-10-06 01:17:29,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:17:29,030 INFO L276 IsEmpty]: Start isEmpty. Operand 36258 states and 193887 transitions. [2020-10-06 01:17:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 01:17:29,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:17:29,032 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:17:29,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-06 01:17:29,032 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]=== [2020-10-06 01:17:29,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:17:29,033 INFO L82 PathProgramCache]: Analyzing trace with hash -581716896, now seen corresponding path program 2 times [2020-10-06 01:17:29,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:17:29,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522928234] [2020-10-06 01:17:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:17:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-06 01:17:29,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522928234] [2020-10-06 01:17:29,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:17:29,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 01:17:29,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [63762417] [2020-10-06 01:17:29,073 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:17:29,074 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:17:29,079 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 55 transitions. [2020-10-06 01:17:29,079 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:17:29,120 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:17:29,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:17:29,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:17:29,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:17:29,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:17:29,121 INFO L87 Difference]: Start difference. First operand 36258 states and 193887 transitions. Second operand 7 states. [2020-10-06 01:17:29,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:17:29,895 INFO L93 Difference]: Finished difference Result 84364 states and 406246 transitions. [2020-10-06 01:17:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 01:17:29,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-06 01:17:29,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:17:30,229 INFO L225 Difference]: With dead ends: 84364 [2020-10-06 01:17:30,230 INFO L226 Difference]: Without dead ends: 84309 [2020-10-06 01:17:30,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-06 01:17:31,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84309 states. [2020-10-06 01:17:35,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84309 to 37062. [2020-10-06 01:17:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-06 01:17:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-06 01:17:35,556 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-06 01:17:35,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:17:35,556 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-06 01:17:35,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:17:35,557 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-06 01:17:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:17:35,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:17:35,560 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:17:35,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-06 01:17:35,560 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]=== [2020-10-06 01:17:35,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:17:35,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1745706838, now seen corresponding path program 1 times [2020-10-06 01:17:35,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:17:35,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153979178] [2020-10-06 01:17:35,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:17:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:17:35,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153979178] [2020-10-06 01:17:35,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639633711] [2020-10-06 01:17:35,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:17:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:35,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:17:35,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:17:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:17:35,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:17:35,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:17:35,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [200881490] [2020-10-06 01:17:35,736 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:17:35,738 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:17:35,746 INFO L258 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-10-06 01:17:35,747 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:17:35,806 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:17:35,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:17:35,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:17:35,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:17:35,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:17:35,807 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 9 states. [2020-10-06 01:17:37,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:17:37,131 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-06 01:17:37,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:17:37,131 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:17:37,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:17:37,565 INFO L225 Difference]: With dead ends: 122892 [2020-10-06 01:17:37,566 INFO L226 Difference]: Without dead ends: 122862 [2020-10-06 01:17:37,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 01:17:39,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-06 01:17:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36735. [2020-10-06 01:17:41,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36735 states. [2020-10-06 01:17:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36735 states to 36735 states and 196486 transitions. [2020-10-06 01:17:41,205 INFO L78 Accepts]: Start accepts. Automaton has 36735 states and 196486 transitions. Word has length 25 [2020-10-06 01:17:41,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:17:41,206 INFO L479 AbstractCegarLoop]: Abstraction has 36735 states and 196486 transitions. [2020-10-06 01:17:41,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:17:41,206 INFO L276 IsEmpty]: Start isEmpty. Operand 36735 states and 196486 transitions. [2020-10-06 01:17:41,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:17:41,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:17:41,209 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:17:41,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-06 01:17:41,410 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]=== [2020-10-06 01:17:41,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:17:41,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1730856598, now seen corresponding path program 2 times [2020-10-06 01:17:41,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:17:41,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515786298] [2020-10-06 01:17:41,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:17:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:17:41,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515786298] [2020-10-06 01:17:41,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939225608] [2020-10-06 01:17:41,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:17:41,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 01:17:41,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:17:41,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:17:41,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:17:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:17:41,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:17:41,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:17:41,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1324962571] [2020-10-06 01:17:41,572 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:17:41,573 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:17:41,580 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-06 01:17:41,581 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:17:41,611 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:17:41,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:17:41,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:17:41,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:17:41,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:17:41,612 INFO L87 Difference]: Start difference. First operand 36735 states and 196486 transitions. Second operand 9 states. [2020-10-06 01:17:45,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:17:45,434 INFO L93 Difference]: Finished difference Result 121506 states and 554103 transitions. [2020-10-06 01:17:45,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:17:45,435 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:17:45,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:17:45,919 INFO L225 Difference]: With dead ends: 121506 [2020-10-06 01:17:45,919 INFO L226 Difference]: Without dead ends: 121473 [2020-10-06 01:17:45,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 01:17:47,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121473 states. [2020-10-06 01:17:49,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121473 to 36666. [2020-10-06 01:17:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36666 states. [2020-10-06 01:17:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36666 states to 36666 states and 195964 transitions. [2020-10-06 01:17:49,490 INFO L78 Accepts]: Start accepts. Automaton has 36666 states and 195964 transitions. Word has length 25 [2020-10-06 01:17:49,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:17:49,491 INFO L479 AbstractCegarLoop]: Abstraction has 36666 states and 195964 transitions. [2020-10-06 01:17:49,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:17:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 36666 states and 195964 transitions. [2020-10-06 01:17:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:17:49,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:17:49,495 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:17:49,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:17:49,695 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]=== [2020-10-06 01:17:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:17:49,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1730878670, now seen corresponding path program 1 times [2020-10-06 01:17:49,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:17:49,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853764953] [2020-10-06 01:17:49,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:17:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:17:49,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853764953] [2020-10-06 01:17:49,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8473579] [2020-10-06 01:17:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:17:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:49,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:17:49,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:17:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:17:49,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:17:49,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:17:49,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1126025892] [2020-10-06 01:17:49,861 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:17:49,863 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:17:49,873 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-06 01:17:49,873 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:17:49,904 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:17:49,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:17:49,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:17:49,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:17:49,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:17:49,905 INFO L87 Difference]: Start difference. First operand 36666 states and 195964 transitions. Second operand 9 states. [2020-10-06 01:17:51,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:17:51,157 INFO L93 Difference]: Finished difference Result 120500 states and 549397 transitions. [2020-10-06 01:17:51,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:17:51,158 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:17:51,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:17:51,621 INFO L225 Difference]: With dead ends: 120500 [2020-10-06 01:17:51,622 INFO L226 Difference]: Without dead ends: 120470 [2020-10-06 01:17:51,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 01:17:52,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120470 states. [2020-10-06 01:17:57,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120470 to 36343. [2020-10-06 01:17:57,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36343 states. [2020-10-06 01:17:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36343 states to 36343 states and 194056 transitions. [2020-10-06 01:17:57,704 INFO L78 Accepts]: Start accepts. Automaton has 36343 states and 194056 transitions. Word has length 25 [2020-10-06 01:17:57,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:17:57,704 INFO L479 AbstractCegarLoop]: Abstraction has 36343 states and 194056 transitions. [2020-10-06 01:17:57,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:17:57,704 INFO L276 IsEmpty]: Start isEmpty. Operand 36343 states and 194056 transitions. [2020-10-06 01:17:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:17:57,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:17:57,707 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:17:57,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-06 01:17:57,908 INFO L427 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:17:57,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:17:57,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1766918030, now seen corresponding path program 2 times [2020-10-06 01:17:57,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:17:57,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777311506] [2020-10-06 01:17:57,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:17:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:17:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:17:57,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777311506] [2020-10-06 01:17:57,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449632990] [2020-10-06 01:17:57,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:17:58,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 01:17:58,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:17:58,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:17:58,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:17:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-06 01:17:58,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:17:58,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:17:58,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [318467975] [2020-10-06 01:17:58,075 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:17:58,078 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:17:58,092 INFO L258 McrAutomatonBuilder]: Finished intersection with 66 states and 105 transitions. [2020-10-06 01:17:58,092 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:17:58,152 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:17:58,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:17:58,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:17:58,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:17:58,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:17:58,153 INFO L87 Difference]: Start difference. First operand 36343 states and 194056 transitions. Second operand 9 states. [2020-10-06 01:18:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:18:00,212 INFO L93 Difference]: Finished difference Result 119731 states and 545560 transitions. [2020-10-06 01:18:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:18:00,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-06 01:18:00,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:18:00,749 INFO L225 Difference]: With dead ends: 119731 [2020-10-06 01:18:00,749 INFO L226 Difference]: Without dead ends: 119698 [2020-10-06 01:18:00,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 01:18:01,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119698 states. [2020-10-06 01:18:03,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119698 to 36040. [2020-10-06 01:18:03,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-06 01:18:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-06 01:18:03,508 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-06 01:18:03,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:18:03,509 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-06 01:18:03,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:18:03,509 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-06 01:18:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:18:03,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:18:03,511 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:18:03,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:18:03,712 INFO L427 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:18:03,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:18:03,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1849107924, now seen corresponding path program 3 times [2020-10-06 01:18:03,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:18:03,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032909725] [2020-10-06 01:18:03,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:18:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:18:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:18:03,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032909725] [2020-10-06 01:18:03,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506993990] [2020-10-06 01:18:03,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:18:05,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-06 01:18:05,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:18:05,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:18:05,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:18:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:18:05,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:18:05,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:18:05,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [276078084] [2020-10-06 01:18:05,297 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:18:05,300 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:18:05,309 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-06 01:18:05,309 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:18:05,340 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3835451#(<= thr2Thread3of6ForFork0_~t~0 0), 3835408#(<= ~x~0 0)] [2020-10-06 01:18:05,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 01:18:05,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:18:05,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 01:18:05,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:18:05,341 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 11 states. [2020-10-06 01:18:06,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:18:06,650 INFO L93 Difference]: Finished difference Result 119762 states and 545615 transitions. [2020-10-06 01:18:06,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:18:06,651 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-06 01:18:06,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:18:07,087 INFO L225 Difference]: With dead ends: 119762 [2020-10-06 01:18:07,088 INFO L226 Difference]: Without dead ends: 119732 [2020-10-06 01:18:07,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 01:18:08,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119732 states. [2020-10-06 01:18:10,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119732 to 35475. [2020-10-06 01:18:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35475 states. [2020-10-06 01:18:10,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35475 states to 35475 states and 189246 transitions. [2020-10-06 01:18:10,391 INFO L78 Accepts]: Start accepts. Automaton has 35475 states and 189246 transitions. Word has length 25 [2020-10-06 01:18:10,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:18:10,391 INFO L479 AbstractCegarLoop]: Abstraction has 35475 states and 189246 transitions. [2020-10-06 01:18:10,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-06 01:18:10,391 INFO L276 IsEmpty]: Start isEmpty. Operand 35475 states and 189246 transitions. [2020-10-06 01:18:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:18:10,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:18:10,394 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:18:10,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-06 01:18:10,595 INFO L427 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:18:10,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:18:10,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1177775680, now seen corresponding path program 4 times [2020-10-06 01:18:10,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:18:10,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883844666] [2020-10-06 01:18:10,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:18:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:18:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:18:10,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883844666] [2020-10-06 01:18:10,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290445650] [2020-10-06 01:18:10,649 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:18:10,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 01:18:10,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:18:10,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:18:10,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:18:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:18:10,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:18:10,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:18:10,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1328589345] [2020-10-06 01:18:10,770 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:18:10,776 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:18:10,782 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-10-06 01:18:10,783 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:18:10,795 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4026249#(<= ~x~0 0), 4026292#(<= thr2Thread3of6ForFork0_~t~0 0)] [2020-10-06 01:18:10,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 01:18:10,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:18:10,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 01:18:10,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:18:10,796 INFO L87 Difference]: Start difference. First operand 35475 states and 189246 transitions. Second operand 11 states. [2020-10-06 01:18:12,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:18:12,168 INFO L93 Difference]: Finished difference Result 120788 states and 550630 transitions. [2020-10-06 01:18:12,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:18:12,169 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-06 01:18:12,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:18:12,557 INFO L225 Difference]: With dead ends: 120788 [2020-10-06 01:18:12,557 INFO L226 Difference]: Without dead ends: 120755 [2020-10-06 01:18:12,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 01:18:14,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120755 states. [2020-10-06 01:18:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120755 to 35406. [2020-10-06 01:18:15,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35406 states. [2020-10-06 01:18:15,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35406 states to 35406 states and 188724 transitions. [2020-10-06 01:18:15,979 INFO L78 Accepts]: Start accepts. Automaton has 35406 states and 188724 transitions. Word has length 25 [2020-10-06 01:18:15,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:18:15,979 INFO L479 AbstractCegarLoop]: Abstraction has 35406 states and 188724 transitions. [2020-10-06 01:18:15,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-06 01:18:15,979 INFO L276 IsEmpty]: Start isEmpty. Operand 35406 states and 188724 transitions. [2020-10-06 01:18:15,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:18:15,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:18:15,982 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:18:16,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-06 01:18:16,188 INFO L427 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:18:16,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:18:16,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1177752213, now seen corresponding path program 1 times [2020-10-06 01:18:16,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:18:16,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9611707] [2020-10-06 01:18:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:18:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:18:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:18:16,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9611707] [2020-10-06 01:18:16,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510965566] [2020-10-06 01:18:16,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:18:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:18:16,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:18:16,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:18:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:18:16,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:18:16,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:18:16,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [942617702] [2020-10-06 01:18:16,347 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:18:16,349 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:18:16,354 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-10-06 01:18:16,354 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:18:16,364 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4218021#(<= thr2Thread3of6ForFork0_~t~0 0), 4217978#(<= ~x~0 0)] [2020-10-06 01:18:16,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 01:18:16,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:18:16,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 01:18:16,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:18:16,365 INFO L87 Difference]: Start difference. First operand 35406 states and 188724 transitions. Second operand 11 states. [2020-10-06 01:18:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:18:18,070 INFO L93 Difference]: Finished difference Result 120291 states and 549128 transitions. [2020-10-06 01:18:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:18:18,071 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-06 01:18:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:18:18,468 INFO L225 Difference]: With dead ends: 120291 [2020-10-06 01:18:18,468 INFO L226 Difference]: Without dead ends: 120261 [2020-10-06 01:18:18,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-06 01:18:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120261 states. [2020-10-06 01:18:24,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120261 to 35196. [2020-10-06 01:18:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35196 states. [2020-10-06 01:18:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35196 states to 35196 states and 187476 transitions. [2020-10-06 01:18:24,275 INFO L78 Accepts]: Start accepts. Automaton has 35196 states and 187476 transitions. Word has length 25 [2020-10-06 01:18:24,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:18:24,275 INFO L479 AbstractCegarLoop]: Abstraction has 35196 states and 187476 transitions. [2020-10-06 01:18:24,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-06 01:18:24,275 INFO L276 IsEmpty]: Start isEmpty. Operand 35196 states and 187476 transitions. [2020-10-06 01:18:24,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:18:24,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:18:24,278 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:18:24,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:18:24,479 INFO L427 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:18:24,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:18:24,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1141712853, now seen corresponding path program 2 times [2020-10-06 01:18:24,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:18:24,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887841961] [2020-10-06 01:18:24,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:18:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:18:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:18:24,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887841961] [2020-10-06 01:18:24,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727532584] [2020-10-06 01:18:24,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:18:24,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 01:18:24,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:18:24,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 01:18:24,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:18:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-06 01:18:24,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:18:24,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-06 01:18:24,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [37090685] [2020-10-06 01:18:24,646 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:18:24,647 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:18:24,653 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-06 01:18:24,653 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:18:24,674 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4408833#(<= thr2Thread3of6ForFork0_~t~0 0), 4408790#(<= ~x~0 0)] [2020-10-06 01:18:24,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 01:18:24,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:18:24,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 01:18:24,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:18:24,675 INFO L87 Difference]: Start difference. First operand 35196 states and 187476 transitions. Second operand 11 states. Received shutdown request... [2020-10-06 01:18:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:18:25,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-06 01:18:25,406 WARN L544 AbstractCegarLoop]: Verification canceled [2020-10-06 01:18:25,412 WARN L228 ceAbstractionStarter]: Timeout [2020-10-06 01:18:25,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:18:25 BasicIcfg [2020-10-06 01:18:25,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:18:25,413 INFO L168 Benchmark]: Toolchain (without parser) took 223620.15 ms. Allocated memory was 140.5 MB in the beginning and 2.7 GB in the end (delta: 2.6 GB). Free memory was 102.8 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 999.2 MB. Max. memory is 7.1 GB. [2020-10-06 01:18:25,414 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 01:18:25,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.63 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 162.6 MB in the end (delta: -60.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-10-06 01:18:25,414 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.07 ms. Allocated memory is still 204.5 MB. Free memory was 162.6 MB in the beginning and 160.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-06 01:18:25,415 INFO L168 Benchmark]: Boogie Preprocessor took 31.87 ms. Allocated memory is still 204.5 MB. Free memory was 160.5 MB in the beginning and 159.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-06 01:18:25,415 INFO L168 Benchmark]: RCFGBuilder took 435.80 ms. Allocated memory is still 204.5 MB. Free memory was 159.2 MB in the beginning and 139.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-10-06 01:18:25,415 INFO L168 Benchmark]: TraceAbstraction took 222438.85 ms. Allocated memory was 204.5 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 139.2 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 971.6 MB. Max. memory is 7.1 GB. [2020-10-06 01:18:25,417 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 652.63 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 162.6 MB in the end (delta: -60.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.07 ms. Allocated memory is still 204.5 MB. Free memory was 162.6 MB in the beginning and 160.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.87 ms. Allocated memory is still 204.5 MB. Free memory was 160.5 MB in the beginning and 159.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.80 ms. Allocated memory is still 204.5 MB. Free memory was 159.2 MB in the beginning and 139.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222438.85 ms. Allocated memory was 204.5 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 139.2 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 971.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 55 ProgramPointsBefore, 18 ProgramPointsAfterwards, 51 TransitionsBefore, 12 TransitionsAfterwards, 692 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 389 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 576 CheckedPairsTotal, 45 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1108 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 577 VarBasedMoverChecksPositive, 8 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 964 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 87 TransitionsBefore, 27 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 781 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1796 CheckedPairsTotal, 73 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 118 ProgramPointsBefore, 51 ProgramPointsAfterwards, 105 TransitionsBefore, 33 TransitionsAfterwards, 2192 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 5 ConcurrentYvCompositions, 5 ChoiceCompositions, 1100 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2240 CheckedPairsTotal, 92 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 139 ProgramPointsBefore, 61 ProgramPointsAfterwards, 123 TransitionsBefore, 39 TransitionsAfterwards, 2860 CoEnabledTransitionPairs, 6 FixpointIterations, 59 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 5 ConcurrentYvCompositions, 6 ChoiceCompositions, 1387 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3096 CheckedPairsTotal, 115 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 160 ProgramPointsBefore, 71 ProgramPointsAfterwards, 141 TransitionsBefore, 45 TransitionsAfterwards, 3612 CoEnabledTransitionPairs, 6 FixpointIterations, 66 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 1785 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4226 CheckedPairsTotal, 127 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 679]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 679). Cancelled while BasicCegarLoop was constructing difference of abstraction (35196states) and FLOYD_HOARE automaton (currently 29 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (1795 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 222.0s, OverallIterations: 106, TraceHistogramMax: 6, AutomataDifference: 78.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.9s, HoareTripleCheckerStatistics: 6200 SDtfs, 18427 SDslu, 18887 SDs, 0 SdLazy, 21019 SolverSat, 1741 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3586 GetRequests, 1675 SyntacticMatches, 33 SemanticMatches, 1878 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11373 ImplicationChecksByTransitivity, 16.6s 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: 108.2s AutomataMinimizationTime, 100 MinimizatonAttempts, 2284105 StatesRemovedByMinimization, 93 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 3011 NumberOfCodeBlocks, 2979 NumberOfCodeBlocksAsserted, 173 NumberOfCheckSat, 2778 ConstructedInterpolants, 0 QuantifiedInterpolants, 173052 SizeOfPredicates, 236 NumberOfNonLiveVariables, 5167 ConjunctsInSsa, 324 ConjunctsInUnsatCore, 145 InterpolantComputations, 57 PerfectInterpolantSequences, 1024/1646 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