/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-nondet/nondet-loop-bound-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:58:50,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:58:50,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:58:50,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:58:50,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:58:50,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:58:50,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:58:50,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:58:50,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:58:50,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:58:50,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:58:50,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:58:50,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:58:50,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:58:50,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:58:50,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:58:50,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:58:50,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:58:50,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:58:50,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:58:50,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:58:50,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:58:50,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:58:50,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:58:50,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:58:50,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:58:50,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:58:50,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:58:50,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:58:50,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:58:50,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:58:50,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:58:50,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:58:50,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:58:50,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:58:50,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:58:50,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:58:50,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:58:50,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:58:50,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:58:50,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:58:50,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:58:50,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:58:50,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:58:50,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:58:50,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:58:50,481 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:58:50,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:58:50,481 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:58:50,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:58:50,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:58:50,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:58:50,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:58:50,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:58:50,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:58:50,483 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:58:50,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:58:50,483 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:58:50,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:58:50,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:58:50,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:58:50,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:58:50,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:58:50,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:58:50,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:58:50,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:58:50,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:58:50,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:58:50,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:58:50,485 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:58:50,486 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:58:50,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:58:50,486 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:58:50,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:58:50,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:58:50,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:58:50,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:58:50,826 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:58:50,826 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-16 13:58:50,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8962c807/c58bba6228424c5bbeebbdaa880c8f78/FLAG0fcb52f0c [2020-10-16 13:58:51,419 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:58:51,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-16 13:58:51,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8962c807/c58bba6228424c5bbeebbdaa880c8f78/FLAG0fcb52f0c [2020-10-16 13:58:51,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8962c807/c58bba6228424c5bbeebbdaa880c8f78 [2020-10-16 13:58:51,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:58:51,783 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:58:51,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:58:51,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:58:51,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:58:51,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:58:51" (1/1) ... [2020-10-16 13:58:51,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c285691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:58:51, skipping insertion in model container [2020-10-16 13:58:51,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:58:51" (1/1) ... [2020-10-16 13:58:51,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:58:51,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:58:52,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:58:52,295 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:58:52,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:58:52,407 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:58:52,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:58:52 WrapperNode [2020-10-16 13:58:52,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:58:52,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:58:52,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:58:52,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:58:52,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:58:52" (1/1) ... [2020-10-16 13:58:52,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:58:52" (1/1) ... [2020-10-16 13:58:52,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:58:52,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:58:52,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:58:52,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:58:52,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:58:52" (1/1) ... [2020-10-16 13:58:52,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:58:52" (1/1) ... [2020-10-16 13:58:52,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:58:52" (1/1) ... [2020-10-16 13:58:52,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:58:52" (1/1) ... [2020-10-16 13:58:52,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:58:52" (1/1) ... [2020-10-16 13:58:52,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:58:52" (1/1) ... [2020-10-16 13:58:52,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:58:52" (1/1) ... [2020-10-16 13:58:52,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:58:52,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:58:52,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:58:52,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:58:52,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:58:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:58:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 13:58:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 13:58:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 13:58:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 13:58:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:58:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:58:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:58:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:58:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:58:52,574 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:58:52,928 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:58:52,929 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-16 13:58:52,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:58:52 BoogieIcfgContainer [2020-10-16 13:58:52,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:58:52,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:58:52,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:58:52,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:58:52,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:58:51" (1/3) ... [2020-10-16 13:58:52,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436f993c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:58:52, skipping insertion in model container [2020-10-16 13:58:52,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:58:52" (2/3) ... [2020-10-16 13:58:52,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436f993c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:58:52, skipping insertion in model container [2020-10-16 13:58:52,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:58:52" (3/3) ... [2020-10-16 13:58:52,941 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-10-16 13:58:52,954 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:58:52,954 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:58:52,964 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:58:52,965 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:58:52,993 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,994 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,994 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,994 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,995 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,995 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,996 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,996 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,997 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,997 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,997 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,998 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:52,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:53,003 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:53,004 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:53,004 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:53,004 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:53,005 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:53,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:53,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:53,012 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:53,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:53,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:53,012 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:53,015 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:58:53,031 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:58:53,053 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:58:53,054 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:58:53,054 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:58:53,054 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:58:53,054 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:58:53,054 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:58:53,055 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:58:53,055 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:58:53,066 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:58:53,067 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-16 13:58:53,069 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-16 13:58:53,071 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-10-16 13:58:53,114 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-16 13:58:53,114 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:58:53,120 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-10-16 13:58:53,123 INFO L117 LiptonReduction]: Number of co-enabled transitions 592 [2020-10-16 13:58:54,391 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-16 13:58:54,654 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-16 13:58:54,762 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-16 13:58:54,893 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-16 13:58:54,961 INFO L132 LiptonReduction]: Checked pairs total: 576 [2020-10-16 13:58:54,961 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-16 13:58:54,968 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-16 13:58:54,979 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 13:58:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 13:58:54,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 13:58:54,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:58:54,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 13:58:54,990 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:58:54,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:58:54,996 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-10-16 13:58:55,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:58:55,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159597234] [2020-10-16 13:58:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:58:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:58:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:58:55,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159597234] [2020-10-16 13:58:55,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:58:55,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:58:55,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1542221421] [2020-10-16 13:58:55,259 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:58:55,262 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:58:55,277 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-16 13:58:55,277 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:58:55,282 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:58:55,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:58:55,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:58:55,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:58:55,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:58:55,301 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-16 13:58:55,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:58:55,340 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-16 13:58:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:58:55,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 13:58:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:58:55,352 INFO L225 Difference]: With dead ends: 35 [2020-10-16 13:58:55,353 INFO L226 Difference]: Without dead ends: 31 [2020-10-16 13:58:55,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:58:55,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-16 13:58:55,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-16 13:58:55,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-16 13:58:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-16 13:58:55,402 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-16 13:58:55,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:58:55,402 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-16 13:58:55,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:58:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-16 13:58:55,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 13:58:55,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:58:55,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:58:55,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:58:55,404 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:58:55,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:58:55,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-10-16 13:58:55,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:58:55,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157777353] [2020-10-16 13:58:55,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:58:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:58:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:58:55,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157777353] [2020-10-16 13:58:55,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:58:55,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:58:55,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1618369313] [2020-10-16 13:58:55,544 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:58:55,545 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:58:55,554 INFO L258 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-16 13:58:55,554 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:58:55,555 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:58:55,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:58:55,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:58:55,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:58:55,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:58:55,559 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-16 13:58:55,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:58:55,582 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-16 13:58:55,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:58:55,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-16 13:58:55,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:58:55,583 INFO L225 Difference]: With dead ends: 26 [2020-10-16 13:58:55,583 INFO L226 Difference]: Without dead ends: 24 [2020-10-16 13:58:55,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:58:55,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-16 13:58:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-16 13:58:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-16 13:58:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-16 13:58:55,588 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-16 13:58:55,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:58:55,589 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-16 13:58:55,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:58:55,589 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-16 13:58:55,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:58:55,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:58:55,590 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 13:58:55,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:58:55,590 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:58:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:58:55,591 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-10-16 13:58:55,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:58:55,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786999619] [2020-10-16 13:58:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:58:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:58:55,612 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:58:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:58:55,625 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:58:55,649 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 13:58:55,649 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 13:58:55,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:58:55,650 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 13:58:55,651 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 13:58:55,652 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 13:58:55,661 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,661 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,661 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,661 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,662 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,662 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,662 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,662 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,663 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,663 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,663 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,663 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,663 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,663 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,665 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,665 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,666 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,666 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,667 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,667 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,669 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,669 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,669 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,669 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,669 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,673 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,674 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,674 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,674 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,674 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,677 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,677 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,679 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,679 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,680 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,680 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,680 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,680 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:55,682 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:58:55,682 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 13:58:55,682 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:58:55,682 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:58:55,682 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:58:55,683 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:58:55,683 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:58:55,683 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:58:55,683 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:58:55,683 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:58:55,686 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:58:55,686 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-16 13:58:55,686 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-16 13:58:55,686 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-10-16 13:58:55,706 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-16 13:58:55,707 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 13:58:55,708 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-10-16 13:58:55,710 INFO L117 LiptonReduction]: Number of co-enabled transitions 920 [2020-10-16 13:58:57,070 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-16 13:58:57,211 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 13:58:57,217 INFO L132 LiptonReduction]: Checked pairs total: 1122 [2020-10-16 13:58:57,218 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-16 13:58:57,218 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-16 13:58:57,235 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-16 13:58:57,235 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-16 13:58:57,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 13:58:57,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:58:57,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 13:58:57,236 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:58:57,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:58:57,236 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-10-16 13:58:57,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:58:57,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126244614] [2020-10-16 13:58:57,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:58:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:58:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:58:57,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126244614] [2020-10-16 13:58:57,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:58:57,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:58:57,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1472302387] [2020-10-16 13:58:57,291 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:58:57,291 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:58:57,292 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-16 13:58:57,292 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:58:57,292 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:58:57,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:58:57,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:58:57,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:58:57,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:58:57,293 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-16 13:58:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:58:57,321 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-16 13:58:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:58:57,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 13:58:57,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:58:57,326 INFO L225 Difference]: With dead ends: 185 [2020-10-16 13:58:57,326 INFO L226 Difference]: Without dead ends: 171 [2020-10-16 13:58:57,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:58:57,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-16 13:58:57,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-16 13:58:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-16 13:58:57,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-16 13:58:57,353 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-16 13:58:57,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:58:57,354 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-16 13:58:57,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:58:57,354 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-16 13:58:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:58:57,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:58:57,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:58:57,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:58:57,355 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:58:57,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:58:57,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-10-16 13:58:57,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:58:57,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086059948] [2020-10-16 13:58:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:58:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:58:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:58:57,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086059948] [2020-10-16 13:58:57,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:58:57,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:58:57,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [253091652] [2020-10-16 13:58:57,423 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:58:57,424 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:58:57,426 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:58:57,426 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:58:57,427 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:58:57,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:58:57,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:58:57,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:58:57,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:58:57,428 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-16 13:58:57,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:58:57,515 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-16 13:58:57,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:58:57,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 13:58:57,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:58:57,518 INFO L225 Difference]: With dead ends: 205 [2020-10-16 13:58:57,518 INFO L226 Difference]: Without dead ends: 201 [2020-10-16 13:58:57,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:58:57,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-16 13:58:57,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-16 13:58:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 13:58:57,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-16 13:58:57,542 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-16 13:58:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:58:57,542 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-16 13:58:57,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:58:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-16 13:58:57,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:58:57,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:58:57,544 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:58:57,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:58:57,544 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:58:57,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:58:57,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-10-16 13:58:57,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:58:57,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160343352] [2020-10-16 13:58:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:58:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:58:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:58:57,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160343352] [2020-10-16 13:58:57,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:58:57,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:58:57,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [753967675] [2020-10-16 13:58:57,598 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:58:57,599 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:58:57,601 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-16 13:58:57,601 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:58:57,602 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:58:57,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:58:57,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:58:57,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:58:57,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:58:57,603 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-16 13:58:57,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:58:57,683 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-16 13:58:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:58:57,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:58:57,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:58:57,685 INFO L225 Difference]: With dead ends: 189 [2020-10-16 13:58:57,685 INFO L226 Difference]: Without dead ends: 185 [2020-10-16 13:58:57,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:58:57,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-16 13:58:57,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-16 13:58:57,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 13:58:57,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-16 13:58:57,697 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-16 13:58:57,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:58:57,698 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-16 13:58:57,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:58:57,699 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-16 13:58:57,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:58:57,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:58:57,700 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:58:57,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:58:57,701 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:58:57,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:58:57,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-10-16 13:58:57,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:58:57,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878359949] [2020-10-16 13:58:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:58:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:58:57,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:58:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:58:57,729 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:58:57,736 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 13:58:57,736 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 13:58:57,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:58:57,737 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 13:58:57,737 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 13:58:57,739 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 13:58:57,751 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,751 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,751 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,752 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,753 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,754 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,754 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,760 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,761 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,761 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,761 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,761 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,764 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,764 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,765 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,765 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,765 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,766 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,766 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,771 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,771 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,772 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,776 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,776 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:58:57,779 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:58:57,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 13:58:57,780 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:58:57,780 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:58:57,780 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:58:57,780 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:58:57,780 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:58:57,780 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:58:57,780 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:58:57,781 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:58:57,782 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:58:57,783 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-16 13:58:57,783 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-16 13:58:57,783 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-10-16 13:58:57,804 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-16 13:58:57,804 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 13:58:57,805 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-10-16 13:58:57,808 INFO L117 LiptonReduction]: Number of co-enabled transitions 1308 [2020-10-16 13:58:59,326 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 13:58:59,471 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 13:58:59,481 INFO L132 LiptonReduction]: Checked pairs total: 1841 [2020-10-16 13:58:59,481 INFO L134 LiptonReduction]: Total number of compositions: 79 [2020-10-16 13:58:59,481 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-16 13:58:59,511 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-16 13:58:59,512 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-16 13:58:59,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 13:58:59,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:58:59,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 13:58:59,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:58:59,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:58:59,513 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-10-16 13:58:59,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:58:59,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671957198] [2020-10-16 13:58:59,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:58:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:58:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:58:59,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671957198] [2020-10-16 13:58:59,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:58:59,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:58:59,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1572823134] [2020-10-16 13:58:59,540 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:58:59,541 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:58:59,541 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-16 13:58:59,541 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:58:59,542 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:58:59,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:58:59,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:58:59,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:58:59,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:58:59,543 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-16 13:58:59,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:58:59,595 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-16 13:58:59,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:58:59,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 13:58:59,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:58:59,613 INFO L225 Difference]: With dead ends: 600 [2020-10-16 13:58:59,613 INFO L226 Difference]: Without dead ends: 559 [2020-10-16 13:58:59,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:58:59,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-16 13:58:59,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-16 13:58:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-16 13:58:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-16 13:58:59,671 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-16 13:58:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:58:59,671 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-16 13:58:59,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:58:59,671 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-16 13:58:59,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:58:59,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:58:59,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:58:59,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:58:59,672 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:58:59,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:58:59,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-10-16 13:58:59,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:58:59,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941151416] [2020-10-16 13:58:59,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:58:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:58:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:58:59,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941151416] [2020-10-16 13:58:59,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:58:59,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:58:59,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [596945807] [2020-10-16 13:58:59,719 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:58:59,720 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:58:59,721 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:58:59,721 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:58:59,722 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:58:59,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:58:59,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:58:59,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:58:59,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:58:59,723 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-16 13:58:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:58:59,820 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-16 13:58:59,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:58:59,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 13:58:59,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:58:59,827 INFO L225 Difference]: With dead ends: 817 [2020-10-16 13:58:59,827 INFO L226 Difference]: Without dead ends: 812 [2020-10-16 13:58:59,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:58:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-16 13:58:59,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-16 13:58:59,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-16 13:58:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-16 13:58:59,860 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-16 13:58:59,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:58:59,860 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-16 13:58:59,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:58:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-16 13:58:59,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:58:59,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:58:59,866 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:58:59,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:58:59,866 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:58:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:58:59,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-10-16 13:58:59,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:58:59,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373939131] [2020-10-16 13:58:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:58:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:58:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:58:59,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373939131] [2020-10-16 13:58:59,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:58:59,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:58:59,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [648440302] [2020-10-16 13:58:59,932 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:58:59,934 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:58:59,936 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-16 13:58:59,936 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:58:59,936 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:58:59,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:58:59,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:58:59,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:58:59,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:58:59,937 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-16 13:59:00,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:00,032 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-16 13:59:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:59:00,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:59:00,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:00,039 INFO L225 Difference]: With dead ends: 843 [2020-10-16 13:59:00,039 INFO L226 Difference]: Without dead ends: 836 [2020-10-16 13:59:00,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:00,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-16 13:59:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-16 13:59:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-16 13:59:00,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-16 13:59:00,071 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-16 13:59:00,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:00,072 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-16 13:59:00,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:59:00,072 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-16 13:59:00,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:59:00,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:00,073 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:00,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 13:59:00,074 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:00,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:00,074 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-10-16 13:59:00,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:00,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523195939] [2020-10-16 13:59:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:00,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523195939] [2020-10-16 13:59:00,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701433267] [2020-10-16 13:59:00,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:00,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 13:59:00,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:00,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:00,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 13:59:00,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [944195023] [2020-10-16 13:59:00,331 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:00,333 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:00,336 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 13:59:00,336 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:00,388 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [7313#(<= (+ thr2Thread1of3ForFork0_~t~0 20) ~n~0), 7314#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:00,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:00,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:00,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:00,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 13:59:00,390 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 9 states. [2020-10-16 13:59:00,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:00,708 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-16 13:59:00,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:00,709 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 13:59:00,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:00,717 INFO L225 Difference]: With dead ends: 1059 [2020-10-16 13:59:00,717 INFO L226 Difference]: Without dead ends: 1052 [2020-10-16 13:59:00,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 13:59:00,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-16 13:59:00,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-16 13:59:00,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-16 13:59:00,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-16 13:59:00,749 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-16 13:59:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:00,750 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-16 13:59:00,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:00,750 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-16 13:59:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:59:00,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:00,751 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:00,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 13:59:00,966 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:00,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:00,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-10-16 13:59:00,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:00,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512394090] [2020-10-16 13:59:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:01,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512394090] [2020-10-16 13:59:01,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:01,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:59:01,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [624763327] [2020-10-16 13:59:01,027 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:01,028 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:01,031 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-16 13:59:01,031 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:01,032 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:01,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:59:01,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:01,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:59:01,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:01,033 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-16 13:59:01,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:01,279 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-16 13:59:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:01,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 13:59:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:01,287 INFO L225 Difference]: With dead ends: 1053 [2020-10-16 13:59:01,287 INFO L226 Difference]: Without dead ends: 1045 [2020-10-16 13:59:01,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:59:01,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-16 13:59:01,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-16 13:59:01,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-16 13:59:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-16 13:59:01,317 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-16 13:59:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:01,318 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-16 13:59:01,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:59:01,318 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-16 13:59:01,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:59:01,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:01,319 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:01,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 13:59:01,319 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:01,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-10-16 13:59:01,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:01,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787917765] [2020-10-16 13:59:01,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:59:01,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787917765] [2020-10-16 13:59:01,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:01,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:59:01,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [3009441] [2020-10-16 13:59:01,366 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:01,367 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:01,370 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-16 13:59:01,371 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:01,371 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:01,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:59:01,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:01,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:59:01,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:59:01,372 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-16 13:59:01,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:01,459 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-16 13:59:01,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:59:01,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 13:59:01,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:01,465 INFO L225 Difference]: With dead ends: 736 [2020-10-16 13:59:01,466 INFO L226 Difference]: Without dead ends: 728 [2020-10-16 13:59:01,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-16 13:59:01,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-16 13:59:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-16 13:59:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-16 13:59:01,489 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-16 13:59:01,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:01,490 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-16 13:59:01,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:59:01,490 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-16 13:59:01,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 13:59:01,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:01,491 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:01,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 13:59:01,491 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:01,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:01,492 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-10-16 13:59:01,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:01,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401726123] [2020-10-16 13:59:01,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:59:01,504 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:59:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:59:01,512 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:59:01,519 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 13:59:01,519 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 13:59:01,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 13:59:01,520 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 13:59:01,521 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 13:59:01,521 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 13:59:01,532 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,532 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,533 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,534 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,534 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,534 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,534 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,534 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,534 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,534 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,535 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,535 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,536 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,536 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,536 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,536 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,536 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,536 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,544 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,544 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,546 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,546 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,547 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,547 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,547 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,548 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,549 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,563 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,564 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,564 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,566 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,566 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,566 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,566 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,567 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,570 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,570 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,570 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,570 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,571 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,571 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,572 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,573 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,573 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,574 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,574 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,574 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,575 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,575 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,575 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:01,576 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:59:01,576 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 13:59:01,577 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:59:01,577 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:59:01,577 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:59:01,577 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:59:01,577 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:59:01,577 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:59:01,577 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:59:01,578 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:59:01,579 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:59:01,579 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-16 13:59:01,579 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-16 13:59:01,580 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-10-16 13:59:01,601 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-16 13:59:01,601 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 13:59:01,603 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-10-16 13:59:01,606 INFO L117 LiptonReduction]: Number of co-enabled transitions 1756 [2020-10-16 13:59:03,088 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-16 13:59:03,361 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-16 13:59:03,524 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-16 13:59:03,609 INFO L132 LiptonReduction]: Checked pairs total: 2590 [2020-10-16 13:59:03,609 INFO L134 LiptonReduction]: Total number of compositions: 92 [2020-10-16 13:59:03,609 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-16 13:59:03,731 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-16 13:59:03,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-16 13:59:03,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 13:59:03,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:03,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 13:59:03,732 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:03,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:03,733 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-10-16 13:59:03,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:03,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414404608] [2020-10-16 13:59:03,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:03,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414404608] [2020-10-16 13:59:03,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:03,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:59:03,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [565335703] [2020-10-16 13:59:03,756 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:03,757 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:03,757 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-16 13:59:03,757 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:03,757 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:03,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:59:03,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:03,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:59:03,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:59:03,758 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-16 13:59:03,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:03,803 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-16 13:59:03,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:59:03,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 13:59:03,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:03,819 INFO L225 Difference]: With dead ends: 1889 [2020-10-16 13:59:03,820 INFO L226 Difference]: Without dead ends: 1767 [2020-10-16 13:59:03,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:59:03,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-16 13:59:03,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-16 13:59:03,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-16 13:59:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-16 13:59:03,909 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-16 13:59:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:03,909 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-16 13:59:03,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:59:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-16 13:59:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:59:03,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:03,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:03,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 13:59:03,911 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:03,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:03,911 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-10-16 13:59:03,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:03,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475436010] [2020-10-16 13:59:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:03,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475436010] [2020-10-16 13:59:03,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:03,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:59:03,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1017875895] [2020-10-16 13:59:03,951 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:03,952 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:03,952 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:59:03,953 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:03,953 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:03,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:59:03,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:03,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:59:03,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:59:03,954 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-16 13:59:04,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:04,063 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-16 13:59:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:59:04,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 13:59:04,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:04,087 INFO L225 Difference]: With dead ends: 2905 [2020-10-16 13:59:04,088 INFO L226 Difference]: Without dead ends: 2899 [2020-10-16 13:59:04,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:04,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-16 13:59:04,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-16 13:59:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-16 13:59:04,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-16 13:59:04,244 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-16 13:59:04,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:04,244 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-16 13:59:04,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:59:04,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-16 13:59:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:59:04,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:04,245 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:04,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 13:59:04,245 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:04,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:04,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-10-16 13:59:04,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:04,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301773878] [2020-10-16 13:59:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:04,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301773878] [2020-10-16 13:59:04,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:04,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:59:04,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1296391443] [2020-10-16 13:59:04,283 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:04,284 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:04,286 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-16 13:59:04,286 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:04,286 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:04,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:59:04,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:04,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:59:04,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:59:04,287 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-16 13:59:04,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:04,393 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-16 13:59:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:59:04,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:59:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:04,420 INFO L225 Difference]: With dead ends: 3204 [2020-10-16 13:59:04,421 INFO L226 Difference]: Without dead ends: 3194 [2020-10-16 13:59:04,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:04,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-16 13:59:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-16 13:59:04,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-16 13:59:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-16 13:59:04,528 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-16 13:59:04,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:04,528 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-16 13:59:04,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:59:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-16 13:59:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:59:04,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:04,530 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:04,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 13:59:04,530 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:04,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:04,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-10-16 13:59:04,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:04,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646363213] [2020-10-16 13:59:04,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:04,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646363213] [2020-10-16 13:59:04,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872861967] [2020-10-16 13:59:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:04,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 13:59:04,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:04,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:04,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:04,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 13:59:04,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1586915662] [2020-10-16 13:59:04,715 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:04,716 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:04,719 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 13:59:04,720 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:04,759 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [24180#(<= (+ thr2Thread1of4ForFork0_~t~0 20) ~n~0), 24181#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:04,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:04,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:04,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:04,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 13:59:04,760 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 9 states. [2020-10-16 13:59:05,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:05,113 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-16 13:59:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:05,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 13:59:05,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:05,153 INFO L225 Difference]: With dead ends: 4556 [2020-10-16 13:59:05,154 INFO L226 Difference]: Without dead ends: 4546 [2020-10-16 13:59:05,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 13:59:05,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-16 13:59:05,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-16 13:59:05,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-16 13:59:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-16 13:59:05,333 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-16 13:59:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:05,333 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-16 13:59:05,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-16 13:59:05,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:59:05,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:05,334 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:05,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 13:59:05,535 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:05,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-10-16 13:59:05,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:05,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376908476] [2020-10-16 13:59:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:05,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:05,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376908476] [2020-10-16 13:59:05,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:05,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:59:05,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [681364397] [2020-10-16 13:59:05,620 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:05,622 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:05,625 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-16 13:59:05,625 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:05,626 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:05,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:59:05,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:05,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:59:05,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:05,627 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-16 13:59:05,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:05,959 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-16 13:59:05,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:05,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 13:59:05,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:05,985 INFO L225 Difference]: With dead ends: 4612 [2020-10-16 13:59:05,985 INFO L226 Difference]: Without dead ends: 4601 [2020-10-16 13:59:05,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:59:06,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-16 13:59:06,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-16 13:59:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-16 13:59:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-16 13:59:06,105 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-16 13:59:06,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:06,105 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-16 13:59:06,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:59:06,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-16 13:59:06,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:59:06,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:06,106 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:06,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 13:59:06,107 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:06,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:06,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-10-16 13:59:06,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:06,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314467450] [2020-10-16 13:59:06,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:06,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:59:06,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314467450] [2020-10-16 13:59:06,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:06,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:59:06,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1603633501] [2020-10-16 13:59:06,177 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:06,179 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:06,181 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-16 13:59:06,182 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:06,182 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:06,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:59:06,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:06,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:59:06,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:59:06,183 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-16 13:59:06,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:06,288 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-16 13:59:06,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:59:06,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 13:59:06,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:06,301 INFO L225 Difference]: With dead ends: 3265 [2020-10-16 13:59:06,302 INFO L226 Difference]: Without dead ends: 3250 [2020-10-16 13:59:06,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:06,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-16 13:59:06,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-16 13:59:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-16 13:59:06,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-16 13:59:06,392 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-16 13:59:06,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:06,393 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-16 13:59:06,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:59:06,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-16 13:59:06,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:59:06,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:06,394 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:06,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 13:59:06,395 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:06,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:06,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-10-16 13:59:06,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:06,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919338503] [2020-10-16 13:59:06,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:59:06,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919338503] [2020-10-16 13:59:06,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439272336] [2020-10-16 13:59:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:06,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 13:59:06,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:59:06,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:06,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 13:59:06,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [241560670] [2020-10-16 13:59:06,613 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:06,615 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:06,619 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-10-16 13:59:06,620 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:06,774 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [49675#(<= (+ thr2Thread1of4ForFork0_~t~0 20) ~n~0), 49676#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:06,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:06,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:06,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:06,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 13:59:06,775 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 9 states. [2020-10-16 13:59:07,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:07,131 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-16 13:59:07,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:07,131 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 13:59:07,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:07,150 INFO L225 Difference]: With dead ends: 4825 [2020-10-16 13:59:07,150 INFO L226 Difference]: Without dead ends: 4813 [2020-10-16 13:59:07,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 13:59:07,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-16 13:59:07,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-16 13:59:07,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-16 13:59:07,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-16 13:59:07,255 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-16 13:59:07,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:07,257 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-16 13:59:07,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:07,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-16 13:59:07,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:59:07,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:07,260 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:07,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:07,474 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:07,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:07,474 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-10-16 13:59:07,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:07,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399458963] [2020-10-16 13:59:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:07,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399458963] [2020-10-16 13:59:07,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683141898] [2020-10-16 13:59:07,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:07,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 13:59:07,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:07,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:07,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 13:59:07,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1412061049] [2020-10-16 13:59:07,672 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:07,674 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:07,678 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-10-16 13:59:07,678 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:07,722 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [59194#(<= (+ thr2Thread2of4ForFork0_~t~0 20) ~n~0), 59195#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:07,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:07,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:07,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:07,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 13:59:07,723 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 9 states. [2020-10-16 13:59:08,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:08,055 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-16 13:59:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:08,055 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 13:59:08,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:08,073 INFO L225 Difference]: With dead ends: 4942 [2020-10-16 13:59:08,074 INFO L226 Difference]: Without dead ends: 4925 [2020-10-16 13:59:08,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 13:59:08,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-16 13:59:08,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-16 13:59:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-16 13:59:08,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-16 13:59:08,185 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-16 13:59:08,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:08,186 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-16 13:59:08,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:08,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-16 13:59:08,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:59:08,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:08,187 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:08,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:08,402 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:08,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:08,402 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-10-16 13:59:08,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:08,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063586080] [2020-10-16 13:59:08,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:59:08,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063586080] [2020-10-16 13:59:08,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:08,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:59:08,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1673431759] [2020-10-16 13:59:08,453 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:08,456 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:08,459 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-16 13:59:08,460 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:08,460 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:08,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:59:08,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:08,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:59:08,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:08,461 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-16 13:59:08,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:08,790 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-16 13:59:08,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:08,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:59:08,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:08,807 INFO L225 Difference]: With dead ends: 4934 [2020-10-16 13:59:08,808 INFO L226 Difference]: Without dead ends: 4917 [2020-10-16 13:59:08,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:59:08,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-16 13:59:08,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-16 13:59:08,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-16 13:59:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-16 13:59:08,901 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-16 13:59:08,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:08,901 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-16 13:59:08,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:59:08,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-16 13:59:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:59:08,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:08,903 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:08,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 13:59:08,903 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:08,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:08,903 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-10-16 13:59:08,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:08,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598426142] [2020-10-16 13:59:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:59:08,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598426142] [2020-10-16 13:59:08,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:08,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:59:08,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [373129551] [2020-10-16 13:59:08,959 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:08,961 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:08,964 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-16 13:59:08,964 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:08,964 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:08,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:59:08,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:08,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:59:08,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:08,965 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-16 13:59:09,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:09,227 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-16 13:59:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:09,228 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:59:09,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:09,242 INFO L225 Difference]: With dead ends: 4774 [2020-10-16 13:59:09,243 INFO L226 Difference]: Without dead ends: 4757 [2020-10-16 13:59:09,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:59:09,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-16 13:59:09,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-16 13:59:09,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-16 13:59:09,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-16 13:59:09,327 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-16 13:59:09,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:09,327 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-16 13:59:09,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:59:09,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-16 13:59:09,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:09,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:09,329 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:09,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 13:59:09,330 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:09,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:09,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-10-16 13:59:09,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:09,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519783956] [2020-10-16 13:59:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:09,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519783956] [2020-10-16 13:59:09,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270834617] [2020-10-16 13:59:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:09,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:09,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:09,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:09,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:09,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [686881020] [2020-10-16 13:59:09,598 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:09,599 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:09,605 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-10-16 13:59:09,606 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:09,728 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [87315#(<= (+ ~x~0 20) ~n~0), 87314#(<= (+ thr2Thread1of4ForFork0_~t~0 20) ~n~0)] [2020-10-16 13:59:09,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:09,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:09,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:09,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:09,730 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 11 states. [2020-10-16 13:59:10,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:10,564 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-16 13:59:10,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:10,565 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 13:59:10,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:10,580 INFO L225 Difference]: With dead ends: 6025 [2020-10-16 13:59:10,580 INFO L226 Difference]: Without dead ends: 6017 [2020-10-16 13:59:10,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 13:59:10,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-16 13:59:10,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-16 13:59:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-16 13:59:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-16 13:59:10,691 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-16 13:59:10,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:10,691 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-16 13:59:10,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:59:10,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-16 13:59:10,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:10,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:10,693 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:10,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-16 13:59:10,907 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:10,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-10-16 13:59:10,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:10,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765724152] [2020-10-16 13:59:10,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:59:11,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765724152] [2020-10-16 13:59:11,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102428082] [2020-10-16 13:59:11,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:11,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 13:59:11,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:59:11,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:11,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:59:11,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:11,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:11,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1479106159] [2020-10-16 13:59:11,181 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:11,183 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:11,188 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-16 13:59:11,188 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:11,263 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [97697#(<= (+ thr2Thread1of4ForFork0_~t~0 20) ~n~0), 97698#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:11,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:11,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:11,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:11,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:11,264 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 11 states. [2020-10-16 13:59:12,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:12,073 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-16 13:59:12,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:12,073 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 13:59:12,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:12,146 INFO L225 Difference]: With dead ends: 5914 [2020-10-16 13:59:12,147 INFO L226 Difference]: Without dead ends: 5903 [2020-10-16 13:59:12,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 13:59:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-16 13:59:12,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-16 13:59:12,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-16 13:59:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-16 13:59:12,238 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-16 13:59:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:12,238 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-16 13:59:12,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:59:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-16 13:59:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:12,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:12,243 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:12,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:12,457 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:12,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:12,457 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-10-16 13:59:12,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:12,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649384043] [2020-10-16 13:59:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:12,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649384043] [2020-10-16 13:59:12,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154740861] [2020-10-16 13:59:12,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:12,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 13:59:12,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:59:12,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:12,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:12,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:12,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:12,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [245747510] [2020-10-16 13:59:12,712 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:12,714 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:12,720 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-16 13:59:12,721 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:12,780 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [107905#(<= (+ thr2Thread2of4ForFork0_~t~0 20) ~n~0), 107906#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:12,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:12,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:12,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:12,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:12,781 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 11 states. [2020-10-16 13:59:13,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:13,555 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-16 13:59:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:13,556 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 13:59:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:13,565 INFO L225 Difference]: With dead ends: 5907 [2020-10-16 13:59:13,566 INFO L226 Difference]: Without dead ends: 5899 [2020-10-16 13:59:13,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 13:59:13,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-16 13:59:13,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-16 13:59:13,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-16 13:59:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-16 13:59:13,645 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-16 13:59:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:13,646 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-16 13:59:13,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:59:13,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-16 13:59:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:13,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:13,648 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:13,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-16 13:59:13,863 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:13,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:13,864 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-10-16 13:59:13,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:13,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737962530] [2020-10-16 13:59:13,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:13,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737962530] [2020-10-16 13:59:13,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495886483] [2020-10-16 13:59:13,945 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:14,014 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 13:59:14,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:59:14,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:14,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:14,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:14,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:14,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [82338755] [2020-10-16 13:59:14,106 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:14,107 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:14,160 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-10-16 13:59:14,161 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:14,197 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [117953#(<= (+ ~x~0 20) ~n~0), 117952#(<= (+ thr2Thread2of4ForFork0_~t~0 20) ~n~0)] [2020-10-16 13:59:14,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:14,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:14,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:14,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:14,198 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 11 states. [2020-10-16 13:59:15,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:15,009 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-16 13:59:15,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:15,010 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 13:59:15,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:15,024 INFO L225 Difference]: With dead ends: 5835 [2020-10-16 13:59:15,024 INFO L226 Difference]: Without dead ends: 5824 [2020-10-16 13:59:15,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 13:59:15,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-16 13:59:15,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-16 13:59:15,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-16 13:59:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-16 13:59:15,116 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-16 13:59:15,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:15,117 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-16 13:59:15,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:59:15,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-16 13:59:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:15,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:15,119 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:15,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 13:59:15,333 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:15,334 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-10-16 13:59:15,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:15,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100752517] [2020-10-16 13:59:15,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:59:15,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100752517] [2020-10-16 13:59:15,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:15,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:59:15,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [557927237] [2020-10-16 13:59:15,425 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:15,428 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:15,431 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:59:15,432 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:15,433 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:15,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:15,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:15,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:15,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:59:15,434 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-10-16 13:59:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:16,107 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-10-16 13:59:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:16,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:59:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:16,116 INFO L225 Difference]: With dead ends: 5820 [2020-10-16 13:59:16,117 INFO L226 Difference]: Without dead ends: 5812 [2020-10-16 13:59:16,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:59:16,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-10-16 13:59:16,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-10-16 13:59:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-10-16 13:59:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-10-16 13:59:16,192 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-10-16 13:59:16,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:16,193 INFO L481 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-10-16 13:59:16,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:16,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-10-16 13:59:16,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:16,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:16,195 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:16,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-16 13:59:16,196 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:16,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:16,196 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-10-16 13:59:16,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:16,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608607312] [2020-10-16 13:59:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:59:16,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608607312] [2020-10-16 13:59:16,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:16,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:59:16,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [976733473] [2020-10-16 13:59:16,283 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:16,285 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:16,289 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:59:16,289 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:16,290 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:16,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:16,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:16,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:16,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:59:16,291 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-10-16 13:59:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:17,069 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-10-16 13:59:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:17,069 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:59:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:17,079 INFO L225 Difference]: With dead ends: 5717 [2020-10-16 13:59:17,080 INFO L226 Difference]: Without dead ends: 5705 [2020-10-16 13:59:17,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:59:17,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-10-16 13:59:17,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-10-16 13:59:17,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-10-16 13:59:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-10-16 13:59:17,153 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-10-16 13:59:17,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:17,153 INFO L481 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-10-16 13:59:17,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:17,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-10-16 13:59:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:17,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:17,155 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:17,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 13:59:17,155 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:17,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:17,156 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-10-16 13:59:17,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:17,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968009389] [2020-10-16 13:59:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:59:17,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968009389] [2020-10-16 13:59:17,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:17,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:59:17,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1115577987] [2020-10-16 13:59:17,219 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:17,226 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:17,231 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:59:17,231 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:17,231 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:17,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:59:17,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:17,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:59:17,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:59:17,232 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-10-16 13:59:17,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:17,340 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-10-16 13:59:17,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:59:17,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 13:59:17,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:17,346 INFO L225 Difference]: With dead ends: 2762 [2020-10-16 13:59:17,346 INFO L226 Difference]: Without dead ends: 2746 [2020-10-16 13:59:17,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:17,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-10-16 13:59:17,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-10-16 13:59:17,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-16 13:59:17,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-16 13:59:17,402 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-16 13:59:17,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:17,403 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-16 13:59:17,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:59:17,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-16 13:59:17,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 13:59:17,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:17,405 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:17,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 13:59:17,405 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 13:59:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:17,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-10-16 13:59:17,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:17,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92438259] [2020-10-16 13:59:17,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:59:17,416 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:59:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:59:17,423 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:59:17,429 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 13:59:17,430 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 13:59:17,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 13:59:17,430 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 13:59:17,430 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 13:59:17,431 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 13:59:17,443 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,443 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,443 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,443 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,444 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,444 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,444 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,444 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,444 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,444 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,445 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,445 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,445 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,445 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,445 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,445 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,445 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,446 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,446 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,446 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,446 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,446 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,446 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,447 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,447 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,447 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,447 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,447 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,447 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,447 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,448 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,448 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,448 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,448 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,448 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,451 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,451 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,451 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,451 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,451 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,454 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,454 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,454 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,454 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,454 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,454 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,454 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,455 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,455 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,455 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,455 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,455 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,456 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,456 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,456 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,456 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,461 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,461 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,461 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,461 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,462 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,462 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,463 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,464 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,464 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,464 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,464 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,464 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,465 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,466 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,466 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,466 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,466 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,467 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,468 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,468 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,474 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,474 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,475 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,475 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,475 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,476 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,476 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:59:17,477 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:59:17,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 13:59:17,477 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:59:17,478 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:59:17,478 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:59:17,478 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:59:17,478 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:59:17,478 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:59:17,478 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:59:17,478 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:59:17,480 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:59:17,480 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-16 13:59:17,480 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-16 13:59:17,480 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-10-16 13:59:17,502 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-16 13:59:17,502 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 13:59:17,504 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-10-16 13:59:17,517 INFO L117 LiptonReduction]: Number of co-enabled transitions 2264 [2020-10-16 13:59:19,324 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-16 13:59:19,540 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-16 13:59:19,622 INFO L132 LiptonReduction]: Checked pairs total: 4038 [2020-10-16 13:59:19,622 INFO L134 LiptonReduction]: Total number of compositions: 111 [2020-10-16 13:59:19,622 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-16 13:59:19,985 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-16 13:59:19,985 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-16 13:59:19,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 13:59:19,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:19,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 13:59:19,986 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:19,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:19,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-10-16 13:59:19,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:19,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149493944] [2020-10-16 13:59:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:20,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149493944] [2020-10-16 13:59:20,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:20,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:59:20,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1564871451] [2020-10-16 13:59:20,018 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:20,018 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:20,018 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-16 13:59:20,019 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:20,019 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:20,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:59:20,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:20,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:59:20,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:59:20,020 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-16 13:59:20,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:20,096 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-16 13:59:20,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:59:20,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 13:59:20,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:20,116 INFO L225 Difference]: With dead ends: 5844 [2020-10-16 13:59:20,116 INFO L226 Difference]: Without dead ends: 5479 [2020-10-16 13:59:20,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:59:20,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-16 13:59:20,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-16 13:59:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-16 13:59:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-16 13:59:20,276 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-16 13:59:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:20,276 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-16 13:59:20,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:59:20,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-16 13:59:20,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:59:20,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:20,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:20,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 13:59:20,277 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:20,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:20,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-10-16 13:59:20,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:20,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748175972] [2020-10-16 13:59:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:20,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748175972] [2020-10-16 13:59:20,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:20,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:59:20,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [441295237] [2020-10-16 13:59:20,315 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:20,316 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:20,316 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:59:20,317 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:20,317 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:20,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:59:20,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:20,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:59:20,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:59:20,318 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-16 13:59:20,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:20,495 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-16 13:59:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:59:20,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 13:59:20,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:21,128 INFO L225 Difference]: With dead ends: 9673 [2020-10-16 13:59:21,129 INFO L226 Difference]: Without dead ends: 9666 [2020-10-16 13:59:21,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:21,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-16 13:59:21,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-16 13:59:21,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-16 13:59:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-16 13:59:21,318 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-16 13:59:21,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:21,318 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-16 13:59:21,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:59:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-16 13:59:21,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:59:21,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:21,319 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:21,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 13:59:21,319 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:21,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-10-16 13:59:21,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:21,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442307384] [2020-10-16 13:59:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:21,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442307384] [2020-10-16 13:59:21,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:21,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:59:21,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1043692704] [2020-10-16 13:59:21,363 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:21,364 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:21,366 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-16 13:59:21,366 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:21,366 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:21,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:59:21,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:21,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:59:21,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:59:21,367 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-16 13:59:21,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:21,530 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-16 13:59:21,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:59:21,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:59:21,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:21,558 INFO L225 Difference]: With dead ends: 11081 [2020-10-16 13:59:21,558 INFO L226 Difference]: Without dead ends: 11068 [2020-10-16 13:59:21,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:21,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-16 13:59:21,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-16 13:59:21,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-16 13:59:21,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-16 13:59:21,794 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-16 13:59:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:21,795 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-16 13:59:21,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:59:21,795 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-16 13:59:21,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:59:21,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:21,795 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:21,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 13:59:21,796 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:21,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:21,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-10-16 13:59:21,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:21,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518465969] [2020-10-16 13:59:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:21,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518465969] [2020-10-16 13:59:21,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946785054] [2020-10-16 13:59:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:21,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 13:59:21,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:21,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:21,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 13:59:21,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [339982689] [2020-10-16 13:59:21,990 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:21,991 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:21,995 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 13:59:21,996 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:22,040 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [77597#(<= (+ thr2Thread1of5ForFork0_~t~0 20) ~n~0), 77598#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:22,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:22,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:22,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:22,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 13:59:22,041 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 9 states. [2020-10-16 13:59:22,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:22,526 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-16 13:59:22,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:22,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 13:59:22,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:22,564 INFO L225 Difference]: With dead ends: 16749 [2020-10-16 13:59:22,564 INFO L226 Difference]: Without dead ends: 16736 [2020-10-16 13:59:22,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 13:59:22,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-16 13:59:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-16 13:59:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-16 13:59:22,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-16 13:59:22,843 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-16 13:59:22,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:22,843 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-16 13:59:22,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:22,843 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-16 13:59:22,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:59:22,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:22,844 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:23,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:23,050 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:23,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:23,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-10-16 13:59:23,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:23,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214704297] [2020-10-16 13:59:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:23,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214704297] [2020-10-16 13:59:23,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:23,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:59:23,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1353593437] [2020-10-16 13:59:23,099 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:23,100 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:23,102 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-16 13:59:23,102 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:23,103 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:23,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:59:23,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:23,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:59:23,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:23,104 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-16 13:59:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:23,439 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-16 13:59:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:23,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 13:59:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:23,474 INFO L225 Difference]: With dead ends: 17085 [2020-10-16 13:59:23,474 INFO L226 Difference]: Without dead ends: 17071 [2020-10-16 13:59:23,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:59:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-16 13:59:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-16 13:59:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-16 13:59:23,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-16 13:59:23,748 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-16 13:59:23,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:23,749 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-16 13:59:23,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:59:23,749 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-16 13:59:23,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:59:23,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:23,749 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:23,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 13:59:23,750 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:23,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:23,750 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-10-16 13:59:23,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:23,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926269991] [2020-10-16 13:59:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:59:23,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926269991] [2020-10-16 13:59:23,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:23,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:59:23,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1313143308] [2020-10-16 13:59:23,791 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:23,793 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:23,795 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-16 13:59:23,796 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:23,796 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:23,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:59:23,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:23,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:59:23,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:59:23,797 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-16 13:59:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:24,173 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-16 13:59:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:59:24,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 13:59:24,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:24,216 INFO L225 Difference]: With dead ends: 12234 [2020-10-16 13:59:24,216 INFO L226 Difference]: Without dead ends: 12212 [2020-10-16 13:59:24,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:24,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-16 13:59:24,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-16 13:59:24,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-16 13:59:24,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-16 13:59:24,443 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-16 13:59:24,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:24,444 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-16 13:59:24,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:59:24,444 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-16 13:59:24,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:59:24,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:24,445 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:24,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 13:59:24,445 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:24,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:24,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-10-16 13:59:24,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:24,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6693464] [2020-10-16 13:59:24,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:59:24,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6693464] [2020-10-16 13:59:24,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271839585] [2020-10-16 13:59:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:24,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 13:59:24,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:59:24,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:24,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 13:59:24,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1781988230] [2020-10-16 13:59:24,631 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:24,633 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:24,638 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-10-16 13:59:24,638 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:24,689 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [169168#(<= (+ ~x~0 20) ~n~0), 169167#(<= (+ thr2Thread1of5ForFork0_~t~0 20) ~n~0)] [2020-10-16 13:59:24,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:24,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:24,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:24,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 13:59:24,691 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 9 states. [2020-10-16 13:59:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:25,107 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-16 13:59:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:25,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 13:59:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:25,181 INFO L225 Difference]: With dead ends: 19016 [2020-10-16 13:59:25,182 INFO L226 Difference]: Without dead ends: 18998 [2020-10-16 13:59:25,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 13:59:25,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-16 13:59:25,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-16 13:59:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-16 13:59:25,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-16 13:59:25,539 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-16 13:59:25,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:25,540 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-16 13:59:25,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:25,540 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-16 13:59:25,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:59:25,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:25,541 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:25,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 13:59:25,742 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:25,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:25,742 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-10-16 13:59:25,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:25,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042188435] [2020-10-16 13:59:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:25,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042188435] [2020-10-16 13:59:25,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570084796] [2020-10-16 13:59:25,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:25,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 13:59:25,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:26,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:26,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 13:59:26,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [546715288] [2020-10-16 13:59:26,008 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:26,009 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:26,013 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-10-16 13:59:26,014 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:26,047 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [205171#(<= (+ thr2Thread2of5ForFork0_~t~0 20) ~n~0), 205172#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:26,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:26,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:26,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:26,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 13:59:26,048 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 9 states. [2020-10-16 13:59:26,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:26,525 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-10-16 13:59:26,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:26,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 13:59:26,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:26,602 INFO L225 Difference]: With dead ends: 19670 [2020-10-16 13:59:26,603 INFO L226 Difference]: Without dead ends: 19645 [2020-10-16 13:59:26,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 13:59:26,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-10-16 13:59:26,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-10-16 13:59:26,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-10-16 13:59:26,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-10-16 13:59:26,967 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-10-16 13:59:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:26,967 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-10-16 13:59:26,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-10-16 13:59:26,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:59:26,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:26,969 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:27,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 13:59:27,180 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:27,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:27,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-10-16 13:59:27,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:27,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001590637] [2020-10-16 13:59:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:59:27,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001590637] [2020-10-16 13:59:27,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:27,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:59:27,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [490173771] [2020-10-16 13:59:27,227 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:27,228 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:27,230 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-16 13:59:27,230 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:27,231 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:27,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:59:27,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:27,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:59:27,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:27,231 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-10-16 13:59:27,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:27,580 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-10-16 13:59:27,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:27,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:59:27,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:27,625 INFO L225 Difference]: With dead ends: 19852 [2020-10-16 13:59:27,625 INFO L226 Difference]: Without dead ends: 19827 [2020-10-16 13:59:27,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:59:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-16 13:59:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-10-16 13:59:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-10-16 13:59:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-10-16 13:59:28,137 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-10-16 13:59:28,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:28,137 INFO L481 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-10-16 13:59:28,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:59:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-10-16 13:59:28,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:59:28,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:28,139 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:28,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 13:59:28,139 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:28,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:28,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-10-16 13:59:28,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:28,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000085487] [2020-10-16 13:59:28,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:59:28,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000085487] [2020-10-16 13:59:28,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:28,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:59:28,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1055122105] [2020-10-16 13:59:28,192 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:28,194 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:28,196 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-16 13:59:28,196 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:28,197 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:28,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:59:28,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:28,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:59:28,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:28,198 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-10-16 13:59:28,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:28,558 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-16 13:59:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:28,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 13:59:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:28,597 INFO L225 Difference]: With dead ends: 19555 [2020-10-16 13:59:28,598 INFO L226 Difference]: Without dead ends: 19530 [2020-10-16 13:59:28,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:59:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-16 13:59:28,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-16 13:59:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-16 13:59:28,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-16 13:59:28,908 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-16 13:59:28,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:28,908 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-16 13:59:28,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:59:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-16 13:59:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:28,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:28,910 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:28,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 13:59:28,910 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:28,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:28,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-10-16 13:59:28,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:28,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021176502] [2020-10-16 13:59:28,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:28,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021176502] [2020-10-16 13:59:28,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960739672] [2020-10-16 13:59:28,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:29,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:29,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:59:29,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:29,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:29,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1760762269] [2020-10-16 13:59:29,162 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:29,164 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:29,170 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-10-16 13:59:29,170 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:29,244 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [314740#(<= (+ thr2Thread1of5ForFork0_~t~0 20) ~n~0), 314741#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:29,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:29,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:29,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:29,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:29,246 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 11 states. [2020-10-16 13:59:30,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:30,212 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-16 13:59:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:30,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 13:59:30,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:30,299 INFO L225 Difference]: With dead ends: 26969 [2020-10-16 13:59:30,299 INFO L226 Difference]: Without dead ends: 26957 [2020-10-16 13:59:30,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 13:59:30,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-16 13:59:30,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-10-16 13:59:30,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-10-16 13:59:30,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-10-16 13:59:30,860 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-10-16 13:59:30,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:30,860 INFO L481 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-10-16 13:59:30,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:59:30,860 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-10-16 13:59:30,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:30,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:30,861 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:31,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:31,076 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:31,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:31,076 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-10-16 13:59:31,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:31,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940553123] [2020-10-16 13:59:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:59:31,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940553123] [2020-10-16 13:59:31,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948010577] [2020-10-16 13:59:31,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:31,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 13:59:31,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:59:31,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:31,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:59:31,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:31,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:31,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1068972127] [2020-10-16 13:59:31,341 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:31,344 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:31,349 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-16 13:59:31,349 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:31,412 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [358241#(<= (+ thr2Thread1of5ForFork0_~t~0 20) ~n~0), 358242#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:31,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:31,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:31,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:31,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:31,414 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 11 states. [2020-10-16 13:59:32,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:32,351 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-10-16 13:59:32,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:32,351 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 13:59:32,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:32,409 INFO L225 Difference]: With dead ends: 26661 [2020-10-16 13:59:32,410 INFO L226 Difference]: Without dead ends: 26645 [2020-10-16 13:59:32,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 13:59:32,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-10-16 13:59:32,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-10-16 13:59:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-16 13:59:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-16 13:59:32,810 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-16 13:59:32,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:32,810 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-16 13:59:32,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:59:32,811 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-16 13:59:32,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:32,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:32,812 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:33,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-16 13:59:33,012 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:33,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:33,013 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-10-16 13:59:33,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:33,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876415751] [2020-10-16 13:59:33,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:33,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876415751] [2020-10-16 13:59:33,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920691232] [2020-10-16 13:59:33,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:33,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 13:59:33,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:59:33,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:33,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:33,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:33,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:33,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [884232162] [2020-10-16 13:59:33,580 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:33,584 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:33,594 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-16 13:59:33,595 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:33,665 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [401208#(<= (+ thr2Thread2of5ForFork0_~t~0 20) ~n~0), 401209#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:33,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:33,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:33,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:33,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:33,667 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 11 states. [2020-10-16 13:59:34,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:34,709 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-10-16 13:59:34,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:34,709 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 13:59:34,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:34,800 INFO L225 Difference]: With dead ends: 26686 [2020-10-16 13:59:34,800 INFO L226 Difference]: Without dead ends: 26674 [2020-10-16 13:59:34,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 13:59:34,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-10-16 13:59:35,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-10-16 13:59:35,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-10-16 13:59:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-10-16 13:59:35,204 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-10-16 13:59:35,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:35,205 INFO L481 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-10-16 13:59:35,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:59:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-10-16 13:59:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:35,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:35,206 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:35,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:35,410 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:35,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:35,411 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-10-16 13:59:35,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:35,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755287280] [2020-10-16 13:59:35,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:35,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755287280] [2020-10-16 13:59:35,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088014858] [2020-10-16 13:59:35,493 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:35,584 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 13:59:35,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:59:35,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:35,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 13:59:35,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:35,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:35,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [899654986] [2020-10-16 13:59:35,681 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:35,683 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:35,687 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-10-16 13:59:35,687 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:35,728 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [443740#(<= (+ thr2Thread2of5ForFork0_~t~0 20) ~n~0), 443741#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:35,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:35,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:35,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:35,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:35,729 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 11 states. [2020-10-16 13:59:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:36,704 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-10-16 13:59:36,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:36,705 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 13:59:36,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:36,987 INFO L225 Difference]: With dead ends: 26489 [2020-10-16 13:59:36,987 INFO L226 Difference]: Without dead ends: 26473 [2020-10-16 13:59:36,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 13:59:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-10-16 13:59:37,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-10-16 13:59:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-10-16 13:59:37,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-10-16 13:59:37,327 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-10-16 13:59:37,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:37,327 INFO L481 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-10-16 13:59:37,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:59:37,327 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-10-16 13:59:37,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:37,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:37,329 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:37,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-16 13:59:37,530 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:37,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:37,530 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-10-16 13:59:37,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:37,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046833276] [2020-10-16 13:59:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:59:37,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046833276] [2020-10-16 13:59:37,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:37,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:59:37,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2085790181] [2020-10-16 13:59:37,565 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:37,567 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:37,570 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:59:37,570 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:37,570 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:37,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:59:37,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:37,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:59:37,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:59:37,571 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-10-16 13:59:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:37,726 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-10-16 13:59:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:59:37,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 13:59:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:37,757 INFO L225 Difference]: With dead ends: 13251 [2020-10-16 13:59:37,758 INFO L226 Difference]: Without dead ends: 13220 [2020-10-16 13:59:37,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-10-16 13:59:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-10-16 13:59:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-10-16 13:59:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-10-16 13:59:38,021 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-10-16 13:59:38,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:38,021 INFO L481 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-10-16 13:59:38,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:59:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-10-16 13:59:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:38,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:38,023 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:38,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-16 13:59:38,023 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:38,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-10-16 13:59:38,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:38,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65555413] [2020-10-16 13:59:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:59:38,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65555413] [2020-10-16 13:59:38,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:38,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:59:38,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1112838778] [2020-10-16 13:59:38,087 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:38,089 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:38,092 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:59:38,092 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:38,092 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:38,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:38,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:38,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:38,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:59:38,093 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-10-16 13:59:38,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:38,938 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-10-16 13:59:38,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:38,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:59:38,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:39,008 INFO L225 Difference]: With dead ends: 29788 [2020-10-16 13:59:39,008 INFO L226 Difference]: Without dead ends: 29770 [2020-10-16 13:59:39,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:59:39,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-10-16 13:59:39,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-10-16 13:59:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-10-16 13:59:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-10-16 13:59:39,750 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-10-16 13:59:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:39,750 INFO L481 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-10-16 13:59:39,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-10-16 13:59:39,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 13:59:39,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:39,751 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:39,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-16 13:59:39,751 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:39,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:39,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-10-16 13:59:39,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:39,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336866902] [2020-10-16 13:59:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 13:59:39,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336866902] [2020-10-16 13:59:39,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:39,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 13:59:39,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1940431358] [2020-10-16 13:59:39,831 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:39,833 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:39,837 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 13:59:39,838 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:39,838 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:39,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:39,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:39,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:39,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:59:39,839 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-10-16 13:59:40,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:40,765 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-10-16 13:59:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:40,766 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 13:59:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:40,850 INFO L225 Difference]: With dead ends: 29379 [2020-10-16 13:59:40,851 INFO L226 Difference]: Without dead ends: 29356 [2020-10-16 13:59:40,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 13:59:40,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-16 13:59:41,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-10-16 13:59:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-16 13:59:41,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-16 13:59:41,301 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-16 13:59:41,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:41,301 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-16 13:59:41,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:41,301 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-16 13:59:41,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:59:41,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:41,303 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:41,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-16 13:59:41,303 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:41,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:41,304 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-10-16 13:59:41,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:41,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590441666] [2020-10-16 13:59:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:59:41,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590441666] [2020-10-16 13:59:41,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046478784] [2020-10-16 13:59:41,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:41,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 13:59:41,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:59:41,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:41,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 13:59:41,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [933353090] [2020-10-16 13:59:41,510 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:41,512 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:41,518 INFO L258 McrAutomatonBuilder]: Finished intersection with 48 states and 71 transitions. [2020-10-16 13:59:41,519 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:41,587 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [611973#(<= (+ ~x~0 20) ~n~0), 611972#(<= (+ thr2Thread1of5ForFork0_~t~0 20) ~n~0)] [2020-10-16 13:59:41,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:41,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:41,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:41,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 13:59:41,588 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 9 states. [2020-10-16 13:59:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:42,030 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-16 13:59:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:42,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 13:59:42,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:42,074 INFO L225 Difference]: With dead ends: 19727 [2020-10-16 13:59:42,074 INFO L226 Difference]: Without dead ends: 19703 [2020-10-16 13:59:42,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 13:59:42,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-16 13:59:42,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-16 13:59:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-16 13:59:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-16 13:59:42,384 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-16 13:59:42,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:42,385 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-16 13:59:42,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-16 13:59:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:59:42,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:42,387 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:42,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-16 13:59:42,588 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:42,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:42,588 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-10-16 13:59:42,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:42,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481416499] [2020-10-16 13:59:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:59:42,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481416499] [2020-10-16 13:59:42,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511116115] [2020-10-16 13:59:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:42,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 13:59:42,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 13:59:42,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:42,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 13:59:42,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1310918653] [2020-10-16 13:59:42,921 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:42,923 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:42,929 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 55 transitions. [2020-10-16 13:59:42,929 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:42,984 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [649489#(<= (+ thr2Thread2of5ForFork0_~t~0 20) ~n~0), 649490#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:42,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:42,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:42,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:42,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 13:59:42,985 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 9 states. [2020-10-16 13:59:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:43,522 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-10-16 13:59:43,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:43,523 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 13:59:43,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:43,604 INFO L225 Difference]: With dead ends: 20694 [2020-10-16 13:59:43,605 INFO L226 Difference]: Without dead ends: 20666 [2020-10-16 13:59:43,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 13:59:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-10-16 13:59:44,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-10-16 13:59:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-16 13:59:44,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-10-16 13:59:44,300 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-10-16 13:59:44,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:44,300 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-10-16 13:59:44,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:44,301 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-10-16 13:59:44,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:59:44,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:44,305 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:44,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:44,518 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:44,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:44,519 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-10-16 13:59:44,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:44,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206963972] [2020-10-16 13:59:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:59:44,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206963972] [2020-10-16 13:59:44,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702746770] [2020-10-16 13:59:44,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:44,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 13:59:44,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:59:44,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:44,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 13:59:44,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [589902751] [2020-10-16 13:59:44,708 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:44,710 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:44,714 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 39 transitions. [2020-10-16 13:59:44,714 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:44,748 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [688510#(<= (+ ~x~0 20) ~n~0), 688509#(<= (+ thr2Thread3of5ForFork0_~t~0 20) ~n~0)] [2020-10-16 13:59:44,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 13:59:44,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:44,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 13:59:44,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 13:59:44,750 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 9 states. [2020-10-16 13:59:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:45,171 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-10-16 13:59:45,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:45,172 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 13:59:45,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:45,220 INFO L225 Difference]: With dead ends: 21396 [2020-10-16 13:59:45,220 INFO L226 Difference]: Without dead ends: 21359 [2020-10-16 13:59:45,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 13:59:45,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-10-16 13:59:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-10-16 13:59:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-16 13:59:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-16 13:59:45,565 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-16 13:59:45,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:45,565 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-16 13:59:45,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 13:59:45,566 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-16 13:59:45,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:59:45,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:45,568 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:45,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-16 13:59:45,776 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:45,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:45,776 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-10-16 13:59:45,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:45,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788233666] [2020-10-16 13:59:45,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:59:45,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788233666] [2020-10-16 13:59:45,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:45,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:59:45,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1245678303] [2020-10-16 13:59:45,820 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:45,822 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:45,825 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 13:59:45,825 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:45,826 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:45,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:59:45,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:45,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:59:45,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:45,826 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-16 13:59:46,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:46,192 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-10-16 13:59:46,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:46,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:59:46,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:46,249 INFO L225 Difference]: With dead ends: 21489 [2020-10-16 13:59:46,249 INFO L226 Difference]: Without dead ends: 21452 [2020-10-16 13:59:46,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:59:46,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-10-16 13:59:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-10-16 13:59:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-16 13:59:47,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-16 13:59:47,454 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-16 13:59:47,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:47,454 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-16 13:59:47,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:59:47,454 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-16 13:59:47,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:59:47,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:47,456 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:47,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-16 13:59:47,456 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:47,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:47,457 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-10-16 13:59:47,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:47,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893736420] [2020-10-16 13:59:47,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:59:47,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893736420] [2020-10-16 13:59:47,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:47,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:59:47,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1217097139] [2020-10-16 13:59:47,504 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:47,507 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:47,511 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 13:59:47,511 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:47,511 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:47,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:59:47,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:47,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:59:47,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:47,512 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-16 13:59:47,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:47,960 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-10-16 13:59:47,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:47,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:59:47,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:48,024 INFO L225 Difference]: With dead ends: 21198 [2020-10-16 13:59:48,024 INFO L226 Difference]: Without dead ends: 21161 [2020-10-16 13:59:48,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:59:48,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-10-16 13:59:48,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-10-16 13:59:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-16 13:59:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-16 13:59:48,356 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-16 13:59:48,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:48,356 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-16 13:59:48,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:59:48,356 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-16 13:59:48,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 13:59:48,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:48,358 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:48,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-16 13:59:48,358 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:48,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:48,359 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-10-16 13:59:48,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:48,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356428511] [2020-10-16 13:59:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 13:59:48,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356428511] [2020-10-16 13:59:48,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:59:48,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:59:48,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [43981382] [2020-10-16 13:59:48,425 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:48,428 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:48,432 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 13:59:48,433 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:48,433 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:59:48,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:59:48,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:48,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:59:48,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:59:48,434 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-16 13:59:48,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:48,810 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-10-16 13:59:48,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 13:59:48,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 13:59:48,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:48,856 INFO L225 Difference]: With dead ends: 21067 [2020-10-16 13:59:48,856 INFO L226 Difference]: Without dead ends: 21030 [2020-10-16 13:59:48,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 13:59:48,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-10-16 13:59:49,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-10-16 13:59:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-16 13:59:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-16 13:59:49,186 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-16 13:59:49,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:49,186 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-16 13:59:49,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:59:49,187 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-16 13:59:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:59:49,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:49,189 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:49,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-16 13:59:49,190 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:49,190 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-10-16 13:59:49,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:49,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616769827] [2020-10-16 13:59:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:59:49,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616769827] [2020-10-16 13:59:49,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613582297] [2020-10-16 13:59:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:49,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:49,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:49,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:59:49,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:49,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:49,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [405595364] [2020-10-16 13:59:49,424 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:49,427 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:49,438 INFO L258 McrAutomatonBuilder]: Finished intersection with 66 states and 105 transitions. [2020-10-16 13:59:49,439 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:49,536 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [848920#(<= (+ thr2Thread1of5ForFork0_~t~0 20) ~n~0), 848921#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:49,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:49,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:49,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:49,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:49,537 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 11 states. [2020-10-16 13:59:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:50,489 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-16 13:59:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:50,490 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 13:59:50,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:50,557 INFO L225 Difference]: With dead ends: 30145 [2020-10-16 13:59:50,557 INFO L226 Difference]: Without dead ends: 30125 [2020-10-16 13:59:50,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 13:59:50,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-16 13:59:51,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-10-16 13:59:51,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-10-16 13:59:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-10-16 13:59:51,160 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-10-16 13:59:51,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:51,160 INFO L481 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-10-16 13:59:51,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:59:51,160 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-10-16 13:59:51,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:59:51,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:51,163 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:51,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-16 13:59:51,364 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:51,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:51,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-10-16 13:59:51,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:51,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143400026] [2020-10-16 13:59:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:59:51,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143400026] [2020-10-16 13:59:51,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295115247] [2020-10-16 13:59:51,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:51,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:51,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:51,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 13:59:51,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:51,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:51,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [349764944] [2020-10-16 13:59:51,603 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:51,606 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:51,618 INFO L258 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-10-16 13:59:51,618 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:51,694 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [897877#(<= (+ thr2Thread1of5ForFork0_~t~0 20) ~n~0), 897878#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:51,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:51,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:51,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:51,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:51,698 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 11 states. [2020-10-16 13:59:52,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:52,718 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-10-16 13:59:52,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:52,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 13:59:52,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:52,785 INFO L225 Difference]: With dead ends: 29696 [2020-10-16 13:59:52,786 INFO L226 Difference]: Without dead ends: 29676 [2020-10-16 13:59:52,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 13:59:52,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-10-16 13:59:53,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-10-16 13:59:53,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-16 13:59:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-16 13:59:53,203 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-16 13:59:53,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:53,203 INFO L481 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-16 13:59:53,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:59:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-16 13:59:53,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:59:53,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:53,206 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:53,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-16 13:59:53,407 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:53,408 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-10-16 13:59:53,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:53,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599856426] [2020-10-16 13:59:53,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:59:53,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599856426] [2020-10-16 13:59:53,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184109181] [2020-10-16 13:59:53,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:53,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 13:59:53,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:59:53,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:53,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:59:53,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:53,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:53,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1398109313] [2020-10-16 13:59:53,653 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:53,656 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:53,665 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-16 13:59:53,666 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:53,722 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [946292#(<= (+ ~x~0 20) ~n~0), 946291#(<= (+ thr2Thread1of5ForFork0_~t~0 20) ~n~0)] [2020-10-16 13:59:53,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:53,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:53,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:53,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:53,723 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 11 states. [2020-10-16 13:59:54,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:54,732 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-16 13:59:54,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:54,732 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 13:59:54,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:54,798 INFO L225 Difference]: With dead ends: 29267 [2020-10-16 13:59:54,798 INFO L226 Difference]: Without dead ends: 29245 [2020-10-16 13:59:54,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 13:59:54,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-16 13:59:55,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-16 13:59:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-16 13:59:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-16 13:59:55,437 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-16 13:59:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:55,438 INFO L481 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-16 13:59:55,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:59:55,438 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-16 13:59:55,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:59:55,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:55,441 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:55,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-16 13:59:55,642 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:55,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:55,643 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-10-16 13:59:55,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:55,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826761663] [2020-10-16 13:59:55,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:59:55,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826761663] [2020-10-16 13:59:55,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157046415] [2020-10-16 13:59:55,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:55,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 13:59:55,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:59:55,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:55,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 13:59:55,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:55,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:55,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1327406943] [2020-10-16 13:59:55,881 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:55,884 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:55,892 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-16 13:59:55,892 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:55,956 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [994271#(<= (+ ~x~0 20) ~n~0), 994270#(<= (+ thr2Thread1of5ForFork0_~t~0 20) ~n~0)] [2020-10-16 13:59:55,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:55,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:55,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:55,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:55,957 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 11 states. [2020-10-16 13:59:56,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:56,930 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-16 13:59:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:56,940 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 13:59:56,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:57,007 INFO L225 Difference]: With dead ends: 28920 [2020-10-16 13:59:57,007 INFO L226 Difference]: Without dead ends: 28898 [2020-10-16 13:59:57,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 13:59:57,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-16 13:59:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-16 13:59:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-16 13:59:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-16 13:59:57,435 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-16 13:59:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:57,436 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-16 13:59:57,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:59:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-16 13:59:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:59:57,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:57,439 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:57,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:57,640 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:57,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:57,640 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-10-16 13:59:57,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:57,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191010042] [2020-10-16 13:59:57,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-16 13:59:57,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191010042] [2020-10-16 13:59:57,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382594015] [2020-10-16 13:59:57,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:57,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 13:59:57,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 13:59:57,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:57,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-16 13:59:57,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:57,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:57,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2143215624] [2020-10-16 13:59:57,900 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:57,903 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:57,912 INFO L258 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-10-16 13:59:57,912 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:57,988 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1041679#(<= (+ ~x~0 20) ~n~0), 1041678#(<= (+ thr2Thread2of5ForFork0_~t~0 20) ~n~0)] [2020-10-16 13:59:57,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:57,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:57,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:57,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:57,989 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 11 states. [2020-10-16 13:59:58,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:59:58,985 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-10-16 13:59:58,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 13:59:58,986 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 13:59:58,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:59:59,056 INFO L225 Difference]: With dead ends: 29038 [2020-10-16 13:59:59,057 INFO L226 Difference]: Without dead ends: 29018 [2020-10-16 13:59:59,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 13:59:59,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-10-16 13:59:59,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-10-16 13:59:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-16 13:59:59,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-10-16 13:59:59,460 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-10-16 13:59:59,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:59:59,460 INFO L481 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-10-16 13:59:59,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 13:59:59,460 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-10-16 13:59:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 13:59:59,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:59:59,463 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:59:59,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-16 13:59:59,664 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:59:59,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:59:59,664 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-10-16 13:59:59,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:59:59,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696875514] [2020-10-16 13:59:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:59:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:59:59,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696875514] [2020-10-16 13:59:59,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222959291] [2020-10-16 13:59:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 13:59:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:59:59,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 13:59:59,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 13:59:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 13:59:59,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 13:59:59,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 13:59:59,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [70243527] [2020-10-16 13:59:59,924 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:59:59,927 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:59:59,934 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-16 13:59:59,934 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:59:59,993 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1088852#(<= (+ thr2Thread2of5ForFork0_~t~0 20) ~n~0), 1088853#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 13:59:59,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 13:59:59,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:59:59,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 13:59:59,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 13:59:59,994 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 11 states. [2020-10-16 14:00:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:01,088 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-10-16 14:00:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:00:01,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:00:01,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:01,154 INFO L225 Difference]: With dead ends: 29417 [2020-10-16 14:00:01,155 INFO L226 Difference]: Without dead ends: 29397 [2020-10-16 14:00:01,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:00:01,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-10-16 14:00:01,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-10-16 14:00:01,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-10-16 14:00:01,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-10-16 14:00:01,553 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-10-16 14:00:01,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:01,553 INFO L481 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-10-16 14:00:01,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:00:01,554 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-10-16 14:00:01,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:00:01,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:01,556 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:01,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:01,757 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:01,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:01,758 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-10-16 14:00:01,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:01,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143455612] [2020-10-16 14:00:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 14:00:01,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143455612] [2020-10-16 14:00:01,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734323654] [2020-10-16 14:00:01,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:01,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 14:00:01,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 14:00:01,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:00:01,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:00:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 14:00:02,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:00:02,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:00:02,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [157764959] [2020-10-16 14:00:02,017 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:02,019 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:02,027 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-16 14:00:02,027 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:02,082 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1136385#(<= (+ thr2Thread2of5ForFork0_~t~0 20) ~n~0), 1136386#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 14:00:02,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:00:02,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:02,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:00:02,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:00:02,083 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 11 states. [2020-10-16 14:00:03,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:03,076 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-10-16 14:00:03,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:00:03,077 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:00:03,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:03,142 INFO L225 Difference]: With dead ends: 29064 [2020-10-16 14:00:03,142 INFO L226 Difference]: Without dead ends: 29037 [2020-10-16 14:00:03,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:00:03,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-10-16 14:00:03,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-10-16 14:00:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-10-16 14:00:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-10-16 14:00:03,535 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-10-16 14:00:03,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:03,536 INFO L481 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-10-16 14:00:03,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:00:03,536 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-10-16 14:00:03,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:00:03,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:03,539 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:03,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-10-16 14:00:03,740 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:03,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:03,740 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-10-16 14:00:03,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:03,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959781730] [2020-10-16 14:00:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 14:00:03,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959781730] [2020-10-16 14:00:03,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980114433] [2020-10-16 14:00:03,807 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:03,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 14:00:03,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 14:00:03,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:00:03,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:00:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 14:00:03,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:00:03,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:00:03,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [31522969] [2020-10-16 14:00:03,984 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:03,986 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:03,994 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-16 14:00:03,994 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:04,047 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1183491#(<= (+ thr2Thread2of5ForFork0_~t~0 20) ~n~0), 1183492#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 14:00:04,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:00:04,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:04,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:00:04,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:00:04,048 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 11 states. [2020-10-16 14:00:05,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:05,029 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-10-16 14:00:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:00:05,029 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:00:05,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:05,100 INFO L225 Difference]: With dead ends: 28523 [2020-10-16 14:00:05,101 INFO L226 Difference]: Without dead ends: 28501 [2020-10-16 14:00:05,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:00:05,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-10-16 14:00:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-10-16 14:00:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-16 14:00:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-10-16 14:00:05,681 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-10-16 14:00:05,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:05,681 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-10-16 14:00:05,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:00:05,682 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-10-16 14:00:05,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:00:05,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:05,686 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:05,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:05,887 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:05,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:05,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-10-16 14:00:05,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:05,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612824254] [2020-10-16 14:00:05,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 14:00:05,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612824254] [2020-10-16 14:00:05,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673218367] [2020-10-16 14:00:05,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:06,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 14:00:06,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 14:00:06,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:00:06,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:00:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 14:00:06,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:00:06,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:00:06,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [526764558] [2020-10-16 14:00:06,117 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:06,119 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:06,125 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-16 14:00:06,126 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:06,175 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1229832#(<= (+ thr2Thread3of5ForFork0_~t~0 20) ~n~0), 1229833#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 14:00:06,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:00:06,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:06,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:00:06,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:00:06,176 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 11 states. [2020-10-16 14:00:07,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:07,199 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-16 14:00:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:00:07,199 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:00:07,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:07,260 INFO L225 Difference]: With dead ends: 28636 [2020-10-16 14:00:07,260 INFO L226 Difference]: Without dead ends: 28616 [2020-10-16 14:00:07,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:00:07,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-16 14:00:07,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-10-16 14:00:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-10-16 14:00:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-10-16 14:00:07,648 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-10-16 14:00:07,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:07,648 INFO L481 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-10-16 14:00:07,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:00:07,649 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-10-16 14:00:07,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:00:07,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:07,652 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:07,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-16 14:00:07,857 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:07,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:07,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-10-16 14:00:07,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:07,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978883529] [2020-10-16 14:00:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 14:00:07,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978883529] [2020-10-16 14:00:07,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307630241] [2020-10-16 14:00:07,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:08,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 14:00:08,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 14:00:08,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:00:08,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:00:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 14:00:08,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:00:08,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:00:08,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1405002272] [2020-10-16 14:00:08,151 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:08,156 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:08,169 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-16 14:00:08,169 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:08,239 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1276009#(<= (+ ~x~0 20) ~n~0), 1276008#(<= (+ thr2Thread3of5ForFork0_~t~0 20) ~n~0)] [2020-10-16 14:00:08,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:00:08,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:08,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:00:08,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:00:08,241 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 11 states. [2020-10-16 14:00:09,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:09,386 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-16 14:00:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:00:09,387 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:00:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:09,451 INFO L225 Difference]: With dead ends: 28297 [2020-10-16 14:00:09,451 INFO L226 Difference]: Without dead ends: 28277 [2020-10-16 14:00:09,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:00:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-16 14:00:09,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-10-16 14:00:09,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-16 14:00:09,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-10-16 14:00:09,835 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-10-16 14:00:09,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:09,835 INFO L481 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-10-16 14:00:09,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:00:09,835 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-10-16 14:00:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:00:09,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:09,838 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:10,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:10,046 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:10,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:10,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-10-16 14:00:10,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:10,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784759454] [2020-10-16 14:00:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 14:00:10,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784759454] [2020-10-16 14:00:10,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479401977] [2020-10-16 14:00:10,124 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:10,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 14:00:10,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 14:00:10,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:00:10,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:00:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 14:00:10,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:00:10,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:00:10,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2019916215] [2020-10-16 14:00:10,308 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:10,310 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:10,316 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-10-16 14:00:10,316 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:10,355 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1321633#(<= (+ thr2Thread3of5ForFork0_~t~0 20) ~n~0), 1321634#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 14:00:10,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:00:10,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:10,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:00:10,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:00:10,356 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 11 states. [2020-10-16 14:00:11,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:11,389 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-16 14:00:11,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:00:11,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:00:11,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:11,453 INFO L225 Difference]: With dead ends: 28565 [2020-10-16 14:00:11,453 INFO L226 Difference]: Without dead ends: 28538 [2020-10-16 14:00:11,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:00:11,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-16 14:00:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-16 14:00:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-16 14:00:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-16 14:00:11,991 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-16 14:00:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:11,992 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-16 14:00:11,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:00:11,992 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-16 14:00:11,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:00:11,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:11,995 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:12,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-16 14:00:12,196 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:12,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:12,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-10-16 14:00:12,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:12,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786564925] [2020-10-16 14:00:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 14:00:12,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786564925] [2020-10-16 14:00:12,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002548684] [2020-10-16 14:00:12,258 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:12,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 14:00:12,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 14:00:12,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:00:12,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:00:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 14:00:12,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:00:12,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:00:12,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [460965888] [2020-10-16 14:00:12,483 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:12,488 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:12,500 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-10-16 14:00:12,501 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:12,552 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1367460#(<= (+ thr2Thread3of5ForFork0_~t~0 20) ~n~0), 1367461#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 14:00:12,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:00:12,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:12,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:00:12,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:00:12,553 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 11 states. [2020-10-16 14:00:13,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:13,784 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-16 14:00:13,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:00:13,785 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:00:13,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:13,853 INFO L225 Difference]: With dead ends: 28213 [2020-10-16 14:00:13,854 INFO L226 Difference]: Without dead ends: 28186 [2020-10-16 14:00:13,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:00:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-16 14:00:14,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-16 14:00:14,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-16 14:00:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-16 14:00:14,237 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-16 14:00:14,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:14,237 INFO L481 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-16 14:00:14,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:00:14,237 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-16 14:00:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:00:14,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:14,240 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:14,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:14,441 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:14,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:14,442 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-10-16 14:00:14,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:14,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225491015] [2020-10-16 14:00:14,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 14:00:14,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225491015] [2020-10-16 14:00:14,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:14,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 14:00:14,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1413506454] [2020-10-16 14:00:14,507 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:14,510 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:14,516 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 14:00:14,516 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:14,517 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:14,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:00:14,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:14,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:00:14,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 14:00:14,518 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-10-16 14:00:15,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:15,547 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-10-16 14:00:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:00:15,548 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 14:00:15,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:15,613 INFO L225 Difference]: With dead ends: 28226 [2020-10-16 14:00:15,613 INFO L226 Difference]: Without dead ends: 28206 [2020-10-16 14:00:15,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 14:00:15,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-10-16 14:00:15,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-10-16 14:00:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-10-16 14:00:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-10-16 14:00:16,019 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-10-16 14:00:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:16,020 INFO L481 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-10-16 14:00:16,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:00:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-10-16 14:00:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:00:16,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:16,024 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:16,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-16 14:00:16,024 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:16,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:16,024 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-10-16 14:00:16,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:16,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103167600] [2020-10-16 14:00:16,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 14:00:16,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103167600] [2020-10-16 14:00:16,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:16,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 14:00:16,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [126444242] [2020-10-16 14:00:16,117 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:16,121 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:16,125 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 14:00:16,125 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:16,126 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:16,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:00:16,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:16,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:00:16,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 14:00:16,126 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-10-16 14:00:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:17,046 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-10-16 14:00:17,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:00:17,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 14:00:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:17,109 INFO L225 Difference]: With dead ends: 27801 [2020-10-16 14:00:17,109 INFO L226 Difference]: Without dead ends: 27781 [2020-10-16 14:00:17,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 14:00:17,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-10-16 14:00:17,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-10-16 14:00:17,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-10-16 14:00:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-10-16 14:00:17,508 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-10-16 14:00:17,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:17,508 INFO L481 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-10-16 14:00:17,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:00:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-10-16 14:00:17,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:00:17,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:17,512 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:17,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-16 14:00:17,512 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:17,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:17,512 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-10-16 14:00:17,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:17,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284864283] [2020-10-16 14:00:17,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 14:00:17,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284864283] [2020-10-16 14:00:17,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:17,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 14:00:17,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1064320060] [2020-10-16 14:00:17,589 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:17,593 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:17,600 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 14:00:17,601 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:17,601 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:17,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:00:17,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:17,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:00:17,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 14:00:17,602 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-10-16 14:00:19,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:19,027 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-10-16 14:00:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:00:19,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 14:00:19,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:19,117 INFO L225 Difference]: With dead ends: 27548 [2020-10-16 14:00:19,117 INFO L226 Difference]: Without dead ends: 27521 [2020-10-16 14:00:19,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 14:00:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-10-16 14:00:19,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-10-16 14:00:19,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-10-16 14:00:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-10-16 14:00:19,589 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-10-16 14:00:19,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:19,589 INFO L481 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-10-16 14:00:19,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:00:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-10-16 14:00:19,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:00:19,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:19,592 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:19,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-16 14:00:19,592 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:19,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:19,593 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-10-16 14:00:19,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:19,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847611667] [2020-10-16 14:00:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 14:00:19,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847611667] [2020-10-16 14:00:19,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:19,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 14:00:19,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [130896723] [2020-10-16 14:00:19,667 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:19,672 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:19,678 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 14:00:19,678 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:19,678 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:19,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:00:19,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:19,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:00:19,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 14:00:19,679 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-10-16 14:00:20,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:20,603 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-10-16 14:00:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:00:20,603 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 14:00:20,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:20,664 INFO L225 Difference]: With dead ends: 27167 [2020-10-16 14:00:20,664 INFO L226 Difference]: Without dead ends: 27147 [2020-10-16 14:00:20,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 14:00:20,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-10-16 14:00:21,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-10-16 14:00:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-10-16 14:00:21,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-10-16 14:00:21,042 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-10-16 14:00:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:21,044 INFO L481 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-10-16 14:00:21,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:00:21,044 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-10-16 14:00:21,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:00:21,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:21,047 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:21,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-16 14:00:21,047 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:21,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:21,047 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-10-16 14:00:21,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:21,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784867345] [2020-10-16 14:00:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 14:00:21,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784867345] [2020-10-16 14:00:21,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:21,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 14:00:21,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [536861537] [2020-10-16 14:00:21,116 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:21,119 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:21,125 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 14:00:21,125 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:21,126 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:21,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:00:21,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:21,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:00:21,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 14:00:21,126 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-10-16 14:00:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:22,120 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-10-16 14:00:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:00:22,121 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 14:00:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:22,188 INFO L225 Difference]: With dead ends: 26955 [2020-10-16 14:00:22,188 INFO L226 Difference]: Without dead ends: 26928 [2020-10-16 14:00:22,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 14:00:22,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-10-16 14:00:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-10-16 14:00:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-10-16 14:00:22,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-10-16 14:00:22,555 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-10-16 14:00:22,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:22,556 INFO L481 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-10-16 14:00:22,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:00:22,556 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-10-16 14:00:22,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:00:22,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:22,559 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:22,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-16 14:00:22,560 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:22,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:22,560 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-10-16 14:00:22,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:22,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002423371] [2020-10-16 14:00:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 14:00:22,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002423371] [2020-10-16 14:00:22,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:22,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 14:00:22,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1311732881] [2020-10-16 14:00:22,633 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:22,637 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:22,642 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 14:00:22,643 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:22,643 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:22,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:00:22,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:22,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:00:22,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 14:00:22,644 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-10-16 14:00:23,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:23,814 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-10-16 14:00:23,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:00:23,815 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 14:00:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:23,873 INFO L225 Difference]: With dead ends: 26632 [2020-10-16 14:00:23,873 INFO L226 Difference]: Without dead ends: 26605 [2020-10-16 14:00:23,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 14:00:24,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-10-16 14:00:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-10-16 14:00:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-10-16 14:00:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-10-16 14:00:24,228 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-10-16 14:00:24,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:24,228 INFO L481 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-10-16 14:00:24,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:00:24,229 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-10-16 14:00:24,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:00:24,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:24,232 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:24,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-16 14:00:24,232 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:24,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:24,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-10-16 14:00:24,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:24,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21950447] [2020-10-16 14:00:24,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:24,271 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-16 14:00:24,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21950447] [2020-10-16 14:00:24,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:24,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 14:00:24,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1398233105] [2020-10-16 14:00:24,272 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:24,274 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:24,332 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-10-16 14:00:24,332 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:24,333 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:24,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 14:00:24,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:24,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 14:00:24,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 14:00:24,333 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-10-16 14:00:24,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:24,499 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-10-16 14:00:24,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 14:00:24,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-16 14:00:24,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:24,526 INFO L225 Difference]: With dead ends: 11919 [2020-10-16 14:00:24,526 INFO L226 Difference]: Without dead ends: 11887 [2020-10-16 14:00:24,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 14:00:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-10-16 14:00:24,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-10-16 14:00:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-16 14:00:24,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-16 14:00:24,753 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-16 14:00:24,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:24,753 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-16 14:00:24,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 14:00:24,754 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-16 14:00:24,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 14:00:24,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:24,757 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:24,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-16 14:00:24,757 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:24,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-10-16 14:00:24,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:24,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139429753] [2020-10-16 14:00:24,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 14:00:24,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 14:00:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 14:00:24,771 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 14:00:24,789 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 14:00:24,789 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 14:00:24,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-16 14:00:24,789 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 14:00:24,790 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 14:00:24,790 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-16 14:00:24,803 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,804 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,804 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,804 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,805 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,805 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,806 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,806 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,806 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,806 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,806 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,807 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,807 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,811 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,811 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,811 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,812 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,812 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,813 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,813 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,813 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,813 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,814 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,814 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,814 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,816 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,816 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,818 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,818 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,818 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,818 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,818 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,819 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,819 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,819 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,819 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,819 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,820 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,820 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,820 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,821 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,822 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,822 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,822 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,822 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,823 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,823 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,825 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,825 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,825 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,826 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,826 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,826 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,826 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,827 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,829 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 14:00:24,834 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 14:00:24,834 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-16 14:00:24,834 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 14:00:24,834 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 14:00:24,834 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 14:00:24,834 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 14:00:24,834 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 14:00:24,835 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 14:00:24,835 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 14:00:24,835 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 14:00:24,837 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 14:00:24,837 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-16 14:00:24,837 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-16 14:00:24,837 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-10-16 14:00:24,858 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-10-16 14:00:24,858 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 14:00:24,860 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 173 events. 9/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 284 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 208. Up to 14 conditions per place. [2020-10-16 14:00:24,865 INFO L117 LiptonReduction]: Number of co-enabled transitions 2832 [2020-10-16 14:00:26,802 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-16 14:00:27,104 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 14:00:27,257 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 14:00:27,262 INFO L132 LiptonReduction]: Checked pairs total: 4694 [2020-10-16 14:00:27,262 INFO L134 LiptonReduction]: Total number of compositions: 121 [2020-10-16 14:00:27,263 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-16 14:00:28,883 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-16 14:00:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-16 14:00:28,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 14:00:28,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:28,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 14:00:28,884 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:28,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:28,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-10-16 14:00:28,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:28,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825190765] [2020-10-16 14:00:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 14:00:28,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825190765] [2020-10-16 14:00:28,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:28,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 14:00:28,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [992502315] [2020-10-16 14:00:28,896 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:28,896 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:28,897 INFO L258 McrAutomatonBuilder]: Finished intersection with 4 states and 3 transitions. [2020-10-16 14:00:28,897 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:28,897 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:28,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 14:00:28,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:28,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 14:00:28,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 14:00:28,898 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-16 14:00:29,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:29,049 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-16 14:00:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 14:00:29,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 14:00:29,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:29,103 INFO L225 Difference]: With dead ends: 17885 [2020-10-16 14:00:29,103 INFO L226 Difference]: Without dead ends: 16791 [2020-10-16 14:00:29,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 14:00:29,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-16 14:00:29,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-16 14:00:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-16 14:00:29,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-16 14:00:29,881 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-16 14:00:29,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:29,881 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-16 14:00:29,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 14:00:29,881 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-16 14:00:29,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 14:00:29,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:29,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:29,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-16 14:00:29,882 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:29,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:29,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-10-16 14:00:29,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:29,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905114814] [2020-10-16 14:00:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 14:00:29,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905114814] [2020-10-16 14:00:29,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:29,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 14:00:29,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1082902777] [2020-10-16 14:00:29,910 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:29,910 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:29,911 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 14:00:29,911 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:29,911 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:29,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 14:00:29,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:29,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 14:00:29,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 14:00:29,912 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-16 14:00:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:30,214 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-16 14:00:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 14:00:30,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 14:00:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:30,317 INFO L225 Difference]: With dead ends: 30985 [2020-10-16 14:00:30,317 INFO L226 Difference]: Without dead ends: 30977 [2020-10-16 14:00:30,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 14:00:32,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-16 14:00:32,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-16 14:00:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-16 14:00:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-16 14:00:32,916 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-16 14:00:32,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:32,916 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-16 14:00:32,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 14:00:32,916 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-16 14:00:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 14:00:32,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:32,917 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:32,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-16 14:00:32,917 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:32,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:32,917 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-10-16 14:00:32,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:32,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88684533] [2020-10-16 14:00:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 14:00:32,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88684533] [2020-10-16 14:00:32,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:32,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 14:00:32,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1824444635] [2020-10-16 14:00:32,944 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:32,945 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:32,946 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-16 14:00:32,946 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:32,947 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:32,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 14:00:32,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:32,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 14:00:32,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 14:00:32,948 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-16 14:00:33,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:33,247 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-16 14:00:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 14:00:33,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 14:00:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:33,349 INFO L225 Difference]: With dead ends: 36296 [2020-10-16 14:00:33,349 INFO L226 Difference]: Without dead ends: 36280 [2020-10-16 14:00:33,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 14:00:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-16 14:00:34,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-16 14:00:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-16 14:00:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-16 14:00:34,537 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-16 14:00:34,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:34,537 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-16 14:00:34,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 14:00:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-16 14:00:34,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 14:00:34,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:34,538 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:34,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-16 14:00:34,538 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:34,538 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-10-16 14:00:34,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:34,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213217877] [2020-10-16 14:00:34,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 14:00:34,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213217877] [2020-10-16 14:00:34,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658753315] [2020-10-16 14:00:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:34,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 14:00:34,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:00:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 14:00:34,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:00:34,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 14:00:34,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [995022063] [2020-10-16 14:00:34,770 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:34,772 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:34,776 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-10-16 14:00:34,776 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:34,824 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [243499#(<= (+ ~x~0 20) ~n~0), 243498#(<= (+ thr2Thread1of6ForFork0_~t~0 20) ~n~0)] [2020-10-16 14:00:34,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:00:34,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:34,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:00:34,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 14:00:34,825 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 9 states. [2020-10-16 14:00:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:35,618 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-16 14:00:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 14:00:35,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 14:00:35,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:38,156 INFO L225 Difference]: With dead ends: 56720 [2020-10-16 14:00:38,157 INFO L226 Difference]: Without dead ends: 56704 [2020-10-16 14:00:38,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 14:00:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-16 14:00:39,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-16 14:00:39,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-16 14:00:39,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-16 14:00:39,542 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-16 14:00:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:39,542 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-16 14:00:39,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:00:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-16 14:00:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 14:00:39,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:39,543 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:39,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-16 14:00:39,744 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:39,744 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-10-16 14:00:39,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:39,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556699158] [2020-10-16 14:00:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 14:00:39,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556699158] [2020-10-16 14:00:39,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:39,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 14:00:39,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [188812013] [2020-10-16 14:00:39,792 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:39,792 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:39,794 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-10-16 14:00:39,794 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:39,794 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:39,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 14:00:39,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:39,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 14:00:39,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 14:00:39,795 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-16 14:00:40,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:40,464 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-16 14:00:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 14:00:40,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 14:00:40,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:40,665 INFO L225 Difference]: With dead ends: 58078 [2020-10-16 14:00:40,665 INFO L226 Difference]: Without dead ends: 58061 [2020-10-16 14:00:40,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 14:00:41,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-16 14:00:42,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-16 14:00:42,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-16 14:00:42,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-16 14:00:42,765 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-16 14:00:42,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:42,765 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-16 14:00:42,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 14:00:42,765 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-16 14:00:42,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 14:00:42,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:42,766 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:42,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-16 14:00:42,766 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:42,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:42,766 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-10-16 14:00:42,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:42,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195511510] [2020-10-16 14:00:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 14:00:42,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195511510] [2020-10-16 14:00:42,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:42,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 14:00:42,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [280484599] [2020-10-16 14:00:42,801 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:42,802 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:42,804 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-16 14:00:42,804 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:42,804 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:42,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 14:00:42,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:42,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 14:00:42,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 14:00:42,805 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-16 14:00:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:43,192 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-16 14:00:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 14:00:43,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 14:00:43,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:43,319 INFO L225 Difference]: With dead ends: 41885 [2020-10-16 14:00:43,319 INFO L226 Difference]: Without dead ends: 41856 [2020-10-16 14:00:43,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 14:00:43,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-16 14:00:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-16 14:00:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-16 14:00:44,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-16 14:00:44,616 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-16 14:00:44,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:44,616 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-16 14:00:44,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 14:00:44,617 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-16 14:00:44,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 14:00:44,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:44,617 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:44,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-16 14:00:44,617 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:44,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-10-16 14:00:44,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:44,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139723885] [2020-10-16 14:00:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 14:00:44,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139723885] [2020-10-16 14:00:44,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053027038] [2020-10-16 14:00:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:44,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 14:00:44,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:00:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 14:00:44,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:00:44,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 14:00:44,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1392406372] [2020-10-16 14:00:44,819 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:44,821 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:44,825 INFO L258 McrAutomatonBuilder]: Finished intersection with 36 states and 51 transitions. [2020-10-16 14:00:44,826 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:44,868 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [550248#(<= (+ ~x~0 20) ~n~0), 550247#(<= (+ thr2Thread1of6ForFork0_~t~0 20) ~n~0)] [2020-10-16 14:00:44,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:00:44,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:44,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:00:44,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 14:00:44,869 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 9 states. [2020-10-16 14:00:45,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:45,611 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-16 14:00:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 14:00:45,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 14:00:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:45,823 INFO L225 Difference]: With dead ends: 66831 [2020-10-16 14:00:45,823 INFO L226 Difference]: Without dead ends: 66807 [2020-10-16 14:00:45,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 14:00:46,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-16 14:00:48,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-16 14:00:48,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-16 14:00:48,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-16 14:00:48,136 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-16 14:00:48,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:48,136 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-16 14:00:48,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:00:48,136 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-16 14:00:48,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 14:00:48,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:48,137 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:48,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-16 14:00:48,351 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:48,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-10-16 14:00:48,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:48,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406697466] [2020-10-16 14:00:48,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 14:00:48,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406697466] [2020-10-16 14:00:48,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594370532] [2020-10-16 14:00:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:48,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 14:00:48,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:00:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 14:00:48,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:00:48,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 14:00:48,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [723646832] [2020-10-16 14:00:48,551 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:48,553 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:48,556 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions. [2020-10-16 14:00:48,556 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:48,590 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [674508#(<= (+ thr2Thread2of6ForFork0_~t~0 20) ~n~0), 674509#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 14:00:48,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:00:48,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:48,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:00:48,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 14:00:48,591 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 9 states. [2020-10-16 14:00:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:49,355 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-10-16 14:00:49,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 14:00:49,356 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 14:00:49,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:49,582 INFO L225 Difference]: With dead ends: 69484 [2020-10-16 14:00:49,582 INFO L226 Difference]: Without dead ends: 69451 [2020-10-16 14:00:49,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 14:00:50,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-16 14:00:51,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-10-16 14:00:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-10-16 14:00:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-10-16 14:00:51,949 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-10-16 14:00:51,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:51,949 INFO L481 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-10-16 14:00:51,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:00:51,949 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-10-16 14:00:51,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 14:00:51,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:51,950 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:52,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:52,150 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:52,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:52,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-10-16 14:00:52,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:52,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899090594] [2020-10-16 14:00:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 14:00:52,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899090594] [2020-10-16 14:00:52,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:52,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 14:00:52,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1310439020] [2020-10-16 14:00:52,196 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:52,197 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:52,199 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-16 14:00:52,199 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:52,199 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:52,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 14:00:52,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:52,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 14:00:52,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 14:00:52,200 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-10-16 14:00:52,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:52,963 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-10-16 14:00:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 14:00:52,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 14:00:52,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:53,218 INFO L225 Difference]: With dead ends: 70510 [2020-10-16 14:00:53,219 INFO L226 Difference]: Without dead ends: 70477 [2020-10-16 14:00:53,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 14:00:54,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-10-16 14:00:54,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-10-16 14:00:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-10-16 14:00:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-10-16 14:00:55,028 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-10-16 14:00:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:55,028 INFO L481 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-10-16 14:00:55,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 14:00:55,028 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-10-16 14:00:55,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 14:00:55,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:55,029 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:55,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-16 14:00:55,029 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:55,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:55,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-10-16 14:00:55,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:55,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488888158] [2020-10-16 14:00:55,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 14:00:55,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488888158] [2020-10-16 14:00:55,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:00:55,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 14:00:55,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [268494745] [2020-10-16 14:00:55,075 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:55,076 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:55,078 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2020-10-16 14:00:55,078 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:55,079 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:00:55,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 14:00:55,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:55,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 14:00:55,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 14:00:55,079 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-10-16 14:00:56,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:00:56,172 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-16 14:00:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 14:00:56,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 14:00:56,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:00:56,405 INFO L225 Difference]: With dead ends: 70096 [2020-10-16 14:00:56,406 INFO L226 Difference]: Without dead ends: 70063 [2020-10-16 14:00:56,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 14:00:57,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-16 14:00:58,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-16 14:00:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-16 14:00:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-16 14:00:58,236 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-16 14:00:58,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:00:58,236 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-16 14:00:58,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 14:00:58,236 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-16 14:00:58,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 14:00:58,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:00:58,238 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:00:58,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-16 14:00:58,238 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:00:58,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:00:58,238 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-10-16 14:00:58,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:00:58,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227042147] [2020-10-16 14:00:58,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:00:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 14:00:58,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227042147] [2020-10-16 14:00:58,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779010314] [2020-10-16 14:00:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:00:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:00:58,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:00:58,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:00:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 14:00:58,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:00:58,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:00:58,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1619023930] [2020-10-16 14:00:58,506 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:00:58,508 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:00:58,514 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 69 transitions. [2020-10-16 14:00:58,514 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:00:58,579 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1058556#(<= (+ thr2Thread1of6ForFork0_~t~0 20) ~n~0), 1058557#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 14:00:58,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:00:58,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:00:58,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:00:58,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:00:58,580 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 11 states. [2020-10-16 14:01:00,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:00,617 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-16 14:01:00,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:01:00,617 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 14:01:00,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:00,933 INFO L225 Difference]: With dead ends: 100731 [2020-10-16 14:01:00,933 INFO L226 Difference]: Without dead ends: 100715 [2020-10-16 14:01:00,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:01:02,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-16 14:01:02,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-10-16 14:01:02,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-10-16 14:01:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-10-16 14:01:03,096 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-10-16 14:01:03,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:01:03,097 INFO L481 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-10-16 14:01:03,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:01:03,097 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-10-16 14:01:03,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 14:01:03,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:01:03,098 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:01:03,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-10-16 14:01:03,299 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:01:03,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:01:03,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-10-16 14:01:03,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:01:03,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239509907] [2020-10-16 14:01:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:01:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 14:01:03,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239509907] [2020-10-16 14:01:03,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929625569] [2020-10-16 14:01:03,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:01:03,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 14:01:03,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 14:01:03,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:01:03,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:01:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 14:01:03,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:01:03,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:01:03,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1850572714] [2020-10-16 14:01:03,575 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:01:03,578 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:01:03,583 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-16 14:01:03,583 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:01:03,636 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1216850#(<= (+ ~x~0 20) ~n~0), 1216849#(<= (+ thr2Thread1of6ForFork0_~t~0 20) ~n~0)] [2020-10-16 14:01:03,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:01:03,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:01:03,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:01:03,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:01:03,637 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 11 states. [2020-10-16 14:01:05,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:05,415 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-10-16 14:01:05,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:01:05,416 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 14:01:05,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:05,715 INFO L225 Difference]: With dead ends: 99876 [2020-10-16 14:01:05,716 INFO L226 Difference]: Without dead ends: 99855 [2020-10-16 14:01:05,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:01:06,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-10-16 14:01:07,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-10-16 14:01:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-16 14:01:07,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-16 14:01:07,943 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-16 14:01:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:01:07,944 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-16 14:01:07,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:01:07,944 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-16 14:01:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 14:01:07,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:01:07,945 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:01:08,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:01:08,146 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:01:08,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:01:08,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-10-16 14:01:08,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:01:08,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049810503] [2020-10-16 14:01:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:01:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 14:01:08,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049810503] [2020-10-16 14:01:08,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793381188] [2020-10-16 14:01:08,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:01:08,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 14:01:08,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 14:01:08,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:01:08,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:01:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 14:01:08,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:01:08,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:01:08,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2074220944] [2020-10-16 14:01:08,417 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:01:08,419 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:01:08,425 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-10-16 14:01:08,425 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:01:08,487 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1373536#(<= (+ ~x~0 20) ~n~0), 1373535#(<= (+ thr2Thread2of6ForFork0_~t~0 20) ~n~0)] [2020-10-16 14:01:08,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:01:08,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:01:08,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:01:08,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:01:08,488 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 11 states. [2020-10-16 14:01:10,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:10,297 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-10-16 14:01:10,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:01:10,297 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 14:01:10,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:10,606 INFO L225 Difference]: With dead ends: 100071 [2020-10-16 14:01:10,606 INFO L226 Difference]: Without dead ends: 100055 [2020-10-16 14:01:10,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:01:11,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-10-16 14:01:15,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-10-16 14:01:15,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-16 14:01:15,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-10-16 14:01:15,861 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-10-16 14:01:15,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:01:15,861 INFO L481 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-10-16 14:01:15,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:01:15,861 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-10-16 14:01:15,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 14:01:15,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:01:15,862 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:01:16,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-16 14:01:16,063 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:01:16,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:01:16,064 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-10-16 14:01:16,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:01:16,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054303348] [2020-10-16 14:01:16,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:01:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 14:01:16,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054303348] [2020-10-16 14:01:16,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926938118] [2020-10-16 14:01:16,137 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:01:16,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 14:01:16,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 14:01:16,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:01:16,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:01:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 14:01:16,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:01:16,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:01:16,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1880780819] [2020-10-16 14:01:16,336 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:01:16,338 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:01:16,343 INFO L258 McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions. [2020-10-16 14:01:16,344 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:01:16,389 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1529039#(<= (+ ~x~0 20) ~n~0), 1529038#(<= (+ thr2Thread2of6ForFork0_~t~0 20) ~n~0)] [2020-10-16 14:01:16,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:01:16,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:01:16,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:01:16,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:01:16,391 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 11 states. [2020-10-16 14:01:17,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:17,896 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-10-16 14:01:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:01:17,897 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 14:01:17,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:18,170 INFO L225 Difference]: With dead ends: 99523 [2020-10-16 14:01:18,171 INFO L226 Difference]: Without dead ends: 99502 [2020-10-16 14:01:18,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:01:19,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-10-16 14:01:20,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-10-16 14:01:20,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-10-16 14:01:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-10-16 14:01:20,685 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-10-16 14:01:20,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:01:20,685 INFO L481 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-10-16 14:01:20,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:01:20,685 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-10-16 14:01:20,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 14:01:20,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:01:20,686 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:01:20,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-16 14:01:20,887 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:01:20,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:01:20,888 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-10-16 14:01:20,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:01:20,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971786785] [2020-10-16 14:01:20,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:01:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 14:01:20,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971786785] [2020-10-16 14:01:20,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:01:20,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 14:01:20,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [741595281] [2020-10-16 14:01:20,955 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:01:20,956 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:01:20,959 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 14:01:20,959 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:01:20,959 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:01:20,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:01:20,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:01:20,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:01:20,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 14:01:20,960 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-10-16 14:01:22,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:22,430 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-10-16 14:01:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:01:22,431 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 14:01:22,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:22,726 INFO L225 Difference]: With dead ends: 99710 [2020-10-16 14:01:22,726 INFO L226 Difference]: Without dead ends: 99694 [2020-10-16 14:01:22,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 14:01:23,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-10-16 14:01:25,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-10-16 14:01:25,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-10-16 14:01:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-10-16 14:01:25,633 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-10-16 14:01:25,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:01:25,633 INFO L481 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-10-16 14:01:25,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:01:25,633 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-10-16 14:01:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 14:01:25,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:01:25,634 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:01:25,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-16 14:01:25,635 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:01:25,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:01:25,635 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-10-16 14:01:25,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:01:25,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26749214] [2020-10-16 14:01:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:01:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 14:01:25,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26749214] [2020-10-16 14:01:25,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:01:25,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 14:01:25,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2039460022] [2020-10-16 14:01:25,706 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:01:25,707 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:01:25,711 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 14:01:25,711 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:01:25,712 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:01:25,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:01:25,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:01:25,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:01:25,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 14:01:25,712 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-10-16 14:01:27,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:27,167 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-10-16 14:01:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:01:27,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 14:01:27,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:27,472 INFO L225 Difference]: With dead ends: 98863 [2020-10-16 14:01:27,473 INFO L226 Difference]: Without dead ends: 98841 [2020-10-16 14:01:27,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 14:01:28,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-10-16 14:01:30,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-10-16 14:01:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-10-16 14:01:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-10-16 14:01:30,169 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-10-16 14:01:30,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:01:30,169 INFO L481 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-10-16 14:01:30,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:01:30,169 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-10-16 14:01:30,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 14:01:30,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:01:30,170 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:01:30,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-16 14:01:30,170 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:01:30,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:01:30,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-10-16 14:01:30,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:01:30,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738497954] [2020-10-16 14:01:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:01:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 14:01:30,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738497954] [2020-10-16 14:01:30,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:01:30,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 14:01:30,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1371501336] [2020-10-16 14:01:30,200 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:01:30,201 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:01:30,204 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2020-10-16 14:01:30,204 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:01:30,204 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:01:30,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 14:01:30,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:01:30,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 14:01:30,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 14:01:30,204 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-10-16 14:01:30,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:30,556 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-10-16 14:01:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 14:01:30,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 14:01:30,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:30,689 INFO L225 Difference]: With dead ends: 46463 [2020-10-16 14:01:30,689 INFO L226 Difference]: Without dead ends: 46417 [2020-10-16 14:01:30,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 14:01:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-10-16 14:01:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-10-16 14:01:31,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-16 14:01:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-16 14:01:32,106 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-16 14:01:32,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:01:32,106 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-16 14:01:32,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 14:01:32,106 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-16 14:01:32,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 14:01:32,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:01:32,108 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:01:32,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-16 14:01:32,108 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:01:32,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:01:32,108 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-10-16 14:01:32,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:01:32,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620676623] [2020-10-16 14:01:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:01:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 14:01:32,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620676623] [2020-10-16 14:01:32,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115800079] [2020-10-16 14:01:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:01:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:32,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 14:01:32,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:01:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 14:01:32,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:01:32,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 14:01:32,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1949744061] [2020-10-16 14:01:32,568 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:01:32,570 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:01:32,576 INFO L258 McrAutomatonBuilder]: Finished intersection with 48 states and 71 transitions. [2020-10-16 14:01:32,576 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:01:32,628 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2097001#(<= (+ ~x~0 20) ~n~0), 2097000#(<= (+ thr2Thread1of6ForFork0_~t~0 20) ~n~0)] [2020-10-16 14:01:32,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:01:32,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:01:32,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:01:32,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 14:01:32,629 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 9 states. [2020-10-16 14:01:33,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:33,478 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-16 14:01:33,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 14:01:33,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 14:01:33,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:33,699 INFO L225 Difference]: With dead ends: 75380 [2020-10-16 14:01:33,699 INFO L226 Difference]: Without dead ends: 75344 [2020-10-16 14:01:33,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 14:01:34,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-16 14:01:35,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-16 14:01:35,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-16 14:01:35,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-16 14:01:35,612 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-16 14:01:35,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:01:35,612 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-16 14:01:35,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:01:35,612 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-16 14:01:35,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 14:01:35,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:01:35,614 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:01:35,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:01:35,815 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:01:35,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:01:35,815 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-10-16 14:01:35,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:01:35,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595926386] [2020-10-16 14:01:35,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:01:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 14:01:35,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595926386] [2020-10-16 14:01:35,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109998433] [2020-10-16 14:01:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:01:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:35,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 14:01:35,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:01:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 14:01:36,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:01:36,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 14:01:36,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1714753727] [2020-10-16 14:01:36,038 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:01:36,040 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:01:36,047 INFO L258 McrAutomatonBuilder]: Finished intersection with 40 states and 55 transitions. [2020-10-16 14:01:36,047 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:01:36,348 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2238424#(<= (+ thr2Thread2of6ForFork0_~t~0 20) ~n~0), 2238425#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 14:01:36,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:01:36,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:01:36,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:01:36,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 14:01:36,349 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 9 states. [2020-10-16 14:01:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:37,163 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-10-16 14:01:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 14:01:37,164 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 14:01:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:37,447 INFO L225 Difference]: With dead ends: 79487 [2020-10-16 14:01:37,447 INFO L226 Difference]: Without dead ends: 79445 [2020-10-16 14:01:37,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 14:01:38,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-10-16 14:01:39,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-10-16 14:01:39,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-10-16 14:01:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-10-16 14:01:39,411 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-10-16 14:01:39,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:01:39,411 INFO L481 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-10-16 14:01:39,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:01:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-10-16 14:01:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 14:01:39,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:01:39,413 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:01:39,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:01:39,614 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:01:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:01:39,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-10-16 14:01:39,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:01:39,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907564327] [2020-10-16 14:01:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:01:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 14:01:39,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907564327] [2020-10-16 14:01:39,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444675161] [2020-10-16 14:01:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:01:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:39,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 14:01:39,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:01:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 14:01:39,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:01:39,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 14:01:39,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1971458844] [2020-10-16 14:01:39,821 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:01:39,823 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:01:39,827 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 39 transitions. [2020-10-16 14:01:39,827 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:01:40,118 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2385969#(<= (+ thr2Thread3of6ForFork0_~t~0 20) ~n~0), 2385970#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 14:01:40,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 14:01:40,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:01:40,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 14:01:40,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-16 14:01:40,120 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 9 states. [2020-10-16 14:01:40,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:40,980 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-10-16 14:01:40,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 14:01:40,981 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 14:01:40,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:41,254 INFO L225 Difference]: With dead ends: 82728 [2020-10-16 14:01:41,254 INFO L226 Difference]: Without dead ends: 82673 [2020-10-16 14:01:41,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-16 14:01:42,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-10-16 14:01:43,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-10-16 14:01:43,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-10-16 14:01:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-10-16 14:01:43,288 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-10-16 14:01:43,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:01:43,288 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-10-16 14:01:43,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 14:01:43,288 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-10-16 14:01:43,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 14:01:43,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:01:43,290 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:01:43,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:01:43,491 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:01:43,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:01:43,491 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-10-16 14:01:43,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:01:43,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926943591] [2020-10-16 14:01:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:01:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 14:01:43,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926943591] [2020-10-16 14:01:43,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:01:43,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 14:01:43,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [442252421] [2020-10-16 14:01:43,542 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:01:43,544 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:01:43,547 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 14:01:43,547 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:01:43,548 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:01:43,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 14:01:43,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:01:43,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 14:01:43,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 14:01:43,548 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-10-16 14:01:44,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:44,604 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-10-16 14:01:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 14:01:44,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 14:01:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:44,881 INFO L225 Difference]: With dead ends: 83507 [2020-10-16 14:01:44,882 INFO L226 Difference]: Without dead ends: 83452 [2020-10-16 14:01:44,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 14:01:45,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-10-16 14:01:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-10-16 14:01:46,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-10-16 14:01:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-10-16 14:01:46,937 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-10-16 14:01:46,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:01:46,937 INFO L481 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-10-16 14:01:46,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 14:01:46,937 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-10-16 14:01:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 14:01:46,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:01:46,939 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:01:46,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-16 14:01:46,940 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:01:46,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:01:46,940 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-10-16 14:01:46,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:01:46,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784766229] [2020-10-16 14:01:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:01:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 14:01:46,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784766229] [2020-10-16 14:01:46,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:01:46,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 14:01:46,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2039588983] [2020-10-16 14:01:46,990 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:01:46,992 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:01:46,995 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 14:01:46,995 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:01:46,996 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:01:46,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 14:01:46,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:01:46,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 14:01:46,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 14:01:46,996 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-10-16 14:01:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:48,168 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-10-16 14:01:48,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 14:01:48,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 14:01:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:48,443 INFO L225 Difference]: With dead ends: 83523 [2020-10-16 14:01:48,443 INFO L226 Difference]: Without dead ends: 83468 [2020-10-16 14:01:48,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 14:01:49,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-10-16 14:01:50,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-10-16 14:01:50,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-10-16 14:01:50,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-10-16 14:01:50,537 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-10-16 14:01:50,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:01:50,537 INFO L481 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-10-16 14:01:50,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 14:01:50,538 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-10-16 14:01:50,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 14:01:50,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:01:50,540 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:01:50,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-16 14:01:50,540 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:01:50,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:01:50,540 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-10-16 14:01:50,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:01:50,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129101539] [2020-10-16 14:01:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:01:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:50,592 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 14:01:50,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129101539] [2020-10-16 14:01:50,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 14:01:50,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 14:01:50,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [744621423] [2020-10-16 14:01:50,594 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:01:50,596 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:01:50,599 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 14:01:50,600 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:01:50,600 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 14:01:50,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 14:01:50,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:01:50,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 14:01:50,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 14:01:50,600 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-10-16 14:01:51,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:51,821 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-10-16 14:01:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 14:01:51,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 14:01:51,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:52,087 INFO L225 Difference]: With dead ends: 83918 [2020-10-16 14:01:52,087 INFO L226 Difference]: Without dead ends: 83863 [2020-10-16 14:01:52,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 14:01:52,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-10-16 14:01:54,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-10-16 14:01:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-16 14:01:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-16 14:01:54,158 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-16 14:01:54,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:01:54,158 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-16 14:01:54,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 14:01:54,158 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-16 14:01:54,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:01:54,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:01:54,161 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:01:54,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-16 14:01:54,162 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:01:54,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:01:54,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-10-16 14:01:54,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:01:54,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90756156] [2020-10-16 14:01:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:01:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 14:01:54,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90756156] [2020-10-16 14:01:54,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819924881] [2020-10-16 14:01:54,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:01:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:01:54,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:01:54,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:01:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 14:01:54,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:01:54,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:01:54,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [396276467] [2020-10-16 14:01:54,429 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:01:54,431 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:01:54,441 INFO L258 McrAutomatonBuilder]: Finished intersection with 66 states and 105 transitions. [2020-10-16 14:01:54,442 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:01:54,523 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3007587#(<= (+ ~x~0 20) ~n~0), 3007586#(<= (+ thr2Thread1of6ForFork0_~t~0 20) ~n~0)] [2020-10-16 14:01:54,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:01:54,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:01:54,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:01:54,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:01:54,524 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 11 states. [2020-10-16 14:01:56,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:01:56,638 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-16 14:01:56,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:01:56,639 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:01:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:01:57,039 INFO L225 Difference]: With dead ends: 122892 [2020-10-16 14:01:57,039 INFO L226 Difference]: Without dead ends: 122862 [2020-10-16 14:01:57,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:01:58,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-16 14:01:59,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-10-16 14:01:59,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-10-16 14:02:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-10-16 14:02:03,660 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-10-16 14:02:03,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:02:03,661 INFO L481 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-10-16 14:02:03,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:02:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-10-16 14:02:03,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:02:03,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:02:03,664 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:02:03,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-16 14:02:03,865 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:02:03,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:02:03,866 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-10-16 14:02:03,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:02:03,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516004706] [2020-10-16 14:02:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:02:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:02:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 14:02:03,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516004706] [2020-10-16 14:02:03,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708438648] [2020-10-16 14:02:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:02:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:02:04,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:02:04,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:02:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 14:02:04,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:02:04,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:02:04,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [966202080] [2020-10-16 14:02:04,131 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:02:04,133 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:02:04,142 INFO L258 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-10-16 14:02:04,142 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:02:04,214 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3204068#(<= (+ thr2Thread1of6ForFork0_~t~0 20) ~n~0), 3204069#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 14:02:04,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:02:04,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:02:04,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:02:04,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:02:04,215 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 11 states. [2020-10-16 14:02:05,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:02:05,962 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-10-16 14:02:05,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:02:05,963 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:02:05,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:02:06,313 INFO L225 Difference]: With dead ends: 121590 [2020-10-16 14:02:06,313 INFO L226 Difference]: Without dead ends: 121560 [2020-10-16 14:02:06,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:02:07,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-10-16 14:02:09,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-10-16 14:02:09,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-10-16 14:02:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-10-16 14:02:09,472 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-10-16 14:02:09,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:02:09,472 INFO L481 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-10-16 14:02:09,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:02:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-10-16 14:02:09,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:02:09,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:02:09,476 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:02:09,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:02:09,683 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:02:09,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:02:09,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-10-16 14:02:09,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:02:09,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312812653] [2020-10-16 14:02:09,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:02:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:02:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 14:02:09,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312812653] [2020-10-16 14:02:09,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353044963] [2020-10-16 14:02:09,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:02:09,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 14:02:09,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 14:02:09,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:02:09,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:02:09,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 14:02:09,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:02:09,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:02:09,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [218780071] [2020-10-16 14:02:09,946 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:02:09,948 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:02:09,956 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-16 14:02:09,956 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:02:10,013 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3398821#(<= (+ ~x~0 20) ~n~0), 3398820#(<= (+ thr2Thread1of6ForFork0_~t~0 20) ~n~0)] [2020-10-16 14:02:10,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:02:10,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:02:10,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:02:10,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:02:10,014 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 11 states. [2020-10-16 14:02:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:02:11,600 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-10-16 14:02:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:02:11,600 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:02:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:02:11,992 INFO L225 Difference]: With dead ends: 120395 [2020-10-16 14:02:11,992 INFO L226 Difference]: Without dead ends: 120362 [2020-10-16 14:02:11,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:02:13,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-10-16 14:02:15,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-10-16 14:02:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-10-16 14:02:15,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-10-16 14:02:15,283 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-10-16 14:02:15,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:02:15,283 INFO L481 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-10-16 14:02:15,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:02:15,283 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-10-16 14:02:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:02:15,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:02:15,287 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:02:15,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-16 14:02:15,488 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:02:15,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:02:15,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-10-16 14:02:15,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:02:15,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817180345] [2020-10-16 14:02:15,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:02:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:02:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 14:02:15,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817180345] [2020-10-16 14:02:15,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018307209] [2020-10-16 14:02:15,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-16 14:02:15,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 14:02:15,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 14:02:15,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:02:15,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:02:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 14:02:15,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:02:15,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:02:15,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [991539261] [2020-10-16 14:02:15,760 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:02:15,762 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:02:15,770 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-16 14:02:15,770 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:02:15,834 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3592240#(<= (+ ~x~0 20) ~n~0), 3592239#(<= (+ thr2Thread1of6ForFork0_~t~0 20) ~n~0)] [2020-10-16 14:02:15,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:02:15,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:02:15,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:02:15,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:02:15,835 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 11 states. [2020-10-16 14:02:17,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:02:17,472 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-10-16 14:02:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:02:17,473 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:02:17,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:02:18,560 INFO L225 Difference]: With dead ends: 119346 [2020-10-16 14:02:18,560 INFO L226 Difference]: Without dead ends: 119313 [2020-10-16 14:02:18,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:02:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-10-16 14:02:20,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-10-16 14:02:20,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-16 14:02:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-16 14:02:21,019 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-16 14:02:21,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:02:21,019 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-16 14:02:21,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:02:21,019 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-16 14:02:21,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:02:21,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:02:21,022 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:02:21,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-16 14:02:21,222 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:02:21,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:02:21,223 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-10-16 14:02:21,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:02:21,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809774278] [2020-10-16 14:02:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:02:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:02:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 14:02:21,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809774278] [2020-10-16 14:02:21,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47562632] [2020-10-16 14:02:21,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:02:21,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 14:02:21,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 14:02:21,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:02:21,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:02:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 14:02:21,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:02:21,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:02:21,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1286088286] [2020-10-16 14:02:21,497 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:02:21,499 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:02:21,508 INFO L258 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-10-16 14:02:21,508 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:02:21,579 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3783801#(<= (+ thr2Thread2of6ForFork0_~t~0 20) ~n~0), 3783802#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 14:02:21,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:02:21,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:02:21,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:02:21,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:02:21,580 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 11 states. [2020-10-16 14:02:21,961 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-10-16 14:02:23,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:02:23,441 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-10-16 14:02:23,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:02:23,441 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:02:23,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:02:23,828 INFO L225 Difference]: With dead ends: 119770 [2020-10-16 14:02:23,828 INFO L226 Difference]: Without dead ends: 119740 [2020-10-16 14:02:23,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:02:25,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-10-16 14:02:29,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-10-16 14:02:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-10-16 14:02:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-10-16 14:02:29,431 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-10-16 14:02:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:02:29,431 INFO L481 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-10-16 14:02:29,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:02:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-10-16 14:02:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:02:29,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:02:29,433 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:02:29,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-16 14:02:29,635 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:02:29,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:02:29,635 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-10-16 14:02:29,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:02:29,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052586523] [2020-10-16 14:02:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:02:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:02:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 14:02:29,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052586523] [2020-10-16 14:02:29,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958439248] [2020-10-16 14:02:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:02:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:02:29,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:02:29,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:02:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 14:02:29,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:02:29,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:02:29,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1161113606] [2020-10-16 14:02:29,915 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:02:29,918 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:02:29,926 INFO L258 McrAutomatonBuilder]: Finished intersection with 50 states and 73 transitions. [2020-10-16 14:02:29,926 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:02:30,005 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3974649#(<= (+ thr2Thread2of6ForFork0_~t~0 20) ~n~0), 3974650#(<= (+ ~x~0 20) ~n~0)] [2020-10-16 14:02:30,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:02:30,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:02:30,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:02:30,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:02:30,007 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 11 states. [2020-10-16 14:02:31,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:02:31,602 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-10-16 14:02:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:02:31,603 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:02:31,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:02:31,965 INFO L225 Difference]: With dead ends: 121131 [2020-10-16 14:02:31,965 INFO L226 Difference]: Without dead ends: 121101 [2020-10-16 14:02:31,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:02:33,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-10-16 14:02:35,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-10-16 14:02:35,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-10-16 14:02:35,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-10-16 14:02:35,147 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-10-16 14:02:35,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 14:02:35,147 INFO L481 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-10-16 14:02:35,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 14:02:35,147 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-10-16 14:02:35,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 14:02:35,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 14:02:35,149 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 14:02:35,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-16 14:02:35,350 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 14:02:35,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 14:02:35,351 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-10-16 14:02:35,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 14:02:35,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467790812] [2020-10-16 14:02:35,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 14:02:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 14:02:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 14:02:35,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467790812] [2020-10-16 14:02:35,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041527030] [2020-10-16 14:02:35,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:02:35,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 14:02:35,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 14:02:35,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 14:02:35,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 14:02:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 14:02:35,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 14:02:35,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 14:02:35,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2049137551] [2020-10-16 14:02:35,602 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 14:02:35,605 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 14:02:35,612 INFO L258 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-10-16 14:02:35,612 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 14:02:35,659 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4166665#(<= (+ ~x~0 20) ~n~0), 4166664#(<= (+ thr2Thread2of6ForFork0_~t~0 20) ~n~0)] [2020-10-16 14:02:35,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 14:02:35,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 14:02:35,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 14:02:35,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-16 14:02:35,660 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 11 states. [2020-10-16 14:02:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 14:02:37,798 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-10-16 14:02:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 14:02:37,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 14:02:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 14:02:38,135 INFO L225 Difference]: With dead ends: 120194 [2020-10-16 14:02:38,135 INFO L226 Difference]: Without dead ends: 120154 [2020-10-16 14:02:38,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1264, Unknown=0, NotChecked=0, Total=1640 [2020-10-16 14:02:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-10-16 14:02:40,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-10-16 14:02:40,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. Received shutdown request... [2020-10-16 14:02:44,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 14:02:44,048 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 14:02:44,052 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 14:02:44,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:02:44 BasicIcfg [2020-10-16 14:02:44,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 14:02:44,053 INFO L168 Benchmark]: Toolchain (without parser) took 232271.65 ms. Allocated memory was 139.5 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 100.9 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2020-10-16 14:02:44,054 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 14:02:44,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.91 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.7 MB in the beginning and 162.8 MB in the end (delta: -62.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-10-16 14:02:44,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.94 ms. Allocated memory is still 203.4 MB. Free memory was 162.8 MB in the beginning and 160.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 14:02:44,054 INFO L168 Benchmark]: Boogie Preprocessor took 30.65 ms. Allocated memory is still 203.4 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 14:02:44,055 INFO L168 Benchmark]: RCFGBuilder took 441.53 ms. Allocated memory is still 203.4 MB. Free memory was 158.8 MB in the beginning and 138.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-10-16 14:02:44,055 INFO L168 Benchmark]: TraceAbstraction took 231119.94 ms. Allocated memory was 203.4 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 138.3 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2020-10-16 14:02:44,056 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 623.91 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.7 MB in the beginning and 162.8 MB in the end (delta: -62.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.94 ms. Allocated memory is still 203.4 MB. Free memory was 162.8 MB in the beginning and 160.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.65 ms. Allocated memory is still 203.4 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 441.53 ms. Allocated memory is still 203.4 MB. Free memory was 158.8 MB in the beginning and 138.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231119.94 ms. Allocated memory was 203.4 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 138.3 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 313 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 61 PlacesBefore, 18 PlacesAfterwards, 58 TransitionsBefore, 12 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 54 TotalNumberOfCompositions, 576 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 497 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 28 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 80 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 21 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 3 ConcurrentYvCompositions, 4 ChoiceCompositions, 66 TotalNumberOfCompositions, 1122 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 687 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 46 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 99 PlacesBefore, 41 PlacesAfterwards, 90 TransitionsBefore, 27 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 5 FixpointIterations, 39 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 3 ConcurrentYvCompositions, 5 ChoiceCompositions, 79 TotalNumberOfCompositions, 1841 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 861 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 118 PlacesBefore, 51 PlacesAfterwards, 106 TransitionsBefore, 33 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 92 TotalNumberOfCompositions, 2590 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1101 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 70 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 137 PlacesBefore, 61 PlacesAfterwards, 122 TransitionsBefore, 39 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 6 FixpointIterations, 61 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 3 ConcurrentYvCompositions, 7 ChoiceCompositions, 111 TotalNumberOfCompositions, 4038 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1473 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 102 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 156 PlacesBefore, 71 PlacesAfterwards, 138 TransitionsBefore, 45 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 5 FixpointIterations, 66 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 121 TotalNumberOfCompositions, 4694 MoverChecksTotal - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while ReachableStatesComputation was computing reachable states (3162 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 230.7s, OverallIterations: 105, TraceHistogramMax: 6, AutomataDifference: 88.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.9s, HoareTripleCheckerStatistics: 4696 SDtfs, 20206 SDslu, 14434 SDs, 0 SdLazy, 27950 SolverSat, 1806 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3636 GetRequests, 1426 SyntacticMatches, 15 SemanticMatches, 2195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15825 ImplicationChecksByTransitivity, 28.9s 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: 98.4s AutomataMinimizationTime, 100 MinimizatonAttempts, 2171074 StatesRemovedByMinimization, 92 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 3045 NumberOfCodeBlocks, 3017 NumberOfCodeBlocksAsserted, 178 NumberOfCheckSat, 2810 ConstructedInterpolants, 0 QuantifiedInterpolants, 379164 SizeOfPredicates, 250 NumberOfNonLiveVariables, 5290 ConjunctsInSsa, 391 ConjunctsInUnsatCore, 147 InterpolantComputations, 53 PerfectInterpolantSequences, 900/1652 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