/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 02:33:10,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 02:33:10,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 02:33:10,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 02:33:10,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 02:33:10,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 02:33:10,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 02:33:10,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 02:33:10,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 02:33:10,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 02:33:10,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 02:33:10,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 02:33:10,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 02:33:10,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 02:33:10,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 02:33:10,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 02:33:10,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 02:33:10,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 02:33:10,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 02:33:10,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 02:33:10,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 02:33:10,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 02:33:10,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 02:33:10,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 02:33:10,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 02:33:10,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 02:33:10,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 02:33:10,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 02:33:10,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 02:33:10,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 02:33:10,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 02:33:10,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 02:33:10,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 02:33:10,517 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 02:33:10,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 02:33:10,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 02:33:10,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 02:33:10,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 02:33:10,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 02:33:10,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 02:33:10,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 02:33:10,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 02:33:10,519 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 02:33:10,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 02:33:10,519 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 02:33:10,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 02:33:10,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 02:33:10,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 02:33:10,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 02:33:10,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 02:33:10,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 02:33:10,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 02:33:10,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 02:33:10,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 02:33:10,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 02:33:10,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 02:33:10,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 02:33:10,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 02:33:10,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 02:33:10,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 02:33:10,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 02:33:10,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 02:33:10,913 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 02:33:10,914 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-16 02:33:11,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b4e28448/78c874cfaed24eeaaad05b7cf5c773f9/FLAGfd6ea73bb [2020-10-16 02:33:11,683 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 02:33:11,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-16 02:33:11,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b4e28448/78c874cfaed24eeaaad05b7cf5c773f9/FLAGfd6ea73bb [2020-10-16 02:33:11,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b4e28448/78c874cfaed24eeaaad05b7cf5c773f9 [2020-10-16 02:33:11,892 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 02:33:11,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 02:33:11,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 02:33:11,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 02:33:11,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 02:33:11,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:33:11" (1/1) ... [2020-10-16 02:33:11,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5192fc02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:11, skipping insertion in model container [2020-10-16 02:33:11,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:33:11" (1/1) ... [2020-10-16 02:33:11,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 02:33:11,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 02:33:12,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 02:33:12,596 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 02:33:12,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 02:33:12,790 INFO L208 MainTranslator]: Completed translation [2020-10-16 02:33:12,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:12 WrapperNode [2020-10-16 02:33:12,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 02:33:12,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 02:33:12,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 02:33:12,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 02:33:12,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:12" (1/1) ... [2020-10-16 02:33:12,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:12" (1/1) ... [2020-10-16 02:33:12,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 02:33:12,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 02:33:12,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 02:33:12,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 02:33:12,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:12" (1/1) ... [2020-10-16 02:33:12,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:12" (1/1) ... [2020-10-16 02:33:12,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:12" (1/1) ... [2020-10-16 02:33:12,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:12" (1/1) ... [2020-10-16 02:33:12,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:12" (1/1) ... [2020-10-16 02:33:12,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:12" (1/1) ... [2020-10-16 02:33:12,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:12" (1/1) ... [2020-10-16 02:33:12,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 02:33:12,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 02:33:12,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 02:33:12,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 02:33:12,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 02:33:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 02:33:12,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 02:33:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 02:33:12,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 02:33:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 02:33:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 02:33:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 02:33:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 02:33:12,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 02:33:12,971 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 02:33:13,408 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 02:33:13,408 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-16 02:33:13,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:13 BoogieIcfgContainer [2020-10-16 02:33:13,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 02:33:13,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 02:33:13,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 02:33:13,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 02:33:13,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:33:11" (1/3) ... [2020-10-16 02:33:13,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7b5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:33:13, skipping insertion in model container [2020-10-16 02:33:13,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:12" (2/3) ... [2020-10-16 02:33:13,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7b5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:33:13, skipping insertion in model container [2020-10-16 02:33:13,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:13" (3/3) ... [2020-10-16 02:33:13,419 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-10-16 02:33:13,435 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 02:33:13,445 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 02:33:13,446 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 02:33:13,476 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,476 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,478 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,478 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,480 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,480 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,485 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:13,515 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 02:33:13,540 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 02:33:13,540 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 02:33:13,541 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 02:33:13,541 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 02:33:13,541 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 02:33:13,541 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 02:33:13,541 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 02:33:13,541 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 02:33:13,556 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-10-16 02:33:13,605 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-16 02:33:13,606 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:33:13,612 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 02:33:13,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 58 transitions, 126 flow [2020-10-16 02:33:13,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 57 transitions, 122 flow [2020-10-16 02:33:13,622 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 02:33:13,626 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 57 transitions, 122 flow [2020-10-16 02:33:13,630 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 57 transitions, 122 flow [2020-10-16 02:33:13,631 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 57 transitions, 122 flow [2020-10-16 02:33:13,658 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-16 02:33:13,658 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:33:13,659 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 82 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 02:33:13,665 INFO L117 LiptonReduction]: Number of co-enabled transitions 592 [2020-10-16 02:33:15,297 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-16 02:33:15,537 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-16 02:33:15,627 INFO L132 LiptonReduction]: Checked pairs total: 576 [2020-10-16 02:33:15,628 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-16 02:33:15,632 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2013 [2020-10-16 02:33:15,637 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 02:33:15,637 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:33:15,637 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:15,638 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 02:33:15,638 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 02:33:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:15,644 INFO L82 PathProgramCache]: Analyzing trace with hash 229684, now seen corresponding path program 1 times [2020-10-16 02:33:15,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:15,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033957109] [2020-10-16 02:33:15,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:15,868 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 02:33:15,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033957109] [2020-10-16 02:33:15,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:15,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 02:33:15,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966828968] [2020-10-16 02:33:15,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 02:33:15,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:15,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 02:33:15,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 02:33:15,905 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2020-10-16 02:33:15,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states. [2020-10-16 02:33:15,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:15,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2020-10-16 02:33:15,910 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:15,969 INFO L129 PetriNetUnfolder]: 13/37 cut-off events. [2020-10-16 02:33:15,970 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:33:15,970 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 37 events. 13/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 103 event pairs, 4 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 69. Up to 19 conditions per place. [2020-10-16 02:33:15,972 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 7 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2020-10-16 02:33:15,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 54 flow [2020-10-16 02:33:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 02:33:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 02:33:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2020-10-16 02:33:15,997 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2020-10-16 02:33:15,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2020-10-16 02:33:15,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2020-10-16 02:33:16,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:16,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2020-10-16 02:33:16,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 02:33:16,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 02:33:16,019 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 02:33:16,022 INFO L185 Difference]: Start difference. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states and 208 transitions. [2020-10-16 02:33:16,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 54 flow [2020-10-16 02:33:16,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 53 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 02:33:16,031 INFO L241 Difference]: Finished difference. Result has 19 places, 11 transitions, 37 flow [2020-10-16 02:33:16,036 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2020-10-16 02:33:16,038 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2020-10-16 02:33:16,038 INFO L481 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 37 flow [2020-10-16 02:33:16,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 02:33:16,039 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:16,039 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:16,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 02:33:16,040 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 02:33:16,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:16,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647298, now seen corresponding path program 1 times [2020-10-16 02:33:16,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:16,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894512313] [2020-10-16 02:33:16,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:16,233 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 02:33:16,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894512313] [2020-10-16 02:33:16,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:16,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 02:33:16,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614758776] [2020-10-16 02:33:16,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 02:33:16,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:16,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 02:33:16,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 02:33:16,246 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2020-10-16 02:33:16,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states. [2020-10-16 02:33:16,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:16,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2020-10-16 02:33:16,247 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:16,299 INFO L129 PetriNetUnfolder]: 11/32 cut-off events. [2020-10-16 02:33:16,299 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 02:33:16,301 INFO L80 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 32 events. 11/32 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 85 event pairs, 4 based on Foata normal form. 3/27 useless extension candidates. Maximal degree in co-relation 71. Up to 14 conditions per place. [2020-10-16 02:33:16,302 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 4 selfloop transitions, 2 changer transitions 2/13 dead transitions. [2020-10-16 02:33:16,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 55 flow [2020-10-16 02:33:16,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 02:33:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 02:33:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 273 transitions. [2020-10-16 02:33:16,306 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.609375 [2020-10-16 02:33:16,307 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 273 transitions. [2020-10-16 02:33:16,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 273 transitions. [2020-10-16 02:33:16,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:16,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 273 transitions. [2020-10-16 02:33:16,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 02:33:16,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 02:33:16,313 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 02:33:16,313 INFO L185 Difference]: Start difference. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states and 273 transitions. [2020-10-16 02:33:16,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 55 flow [2020-10-16 02:33:16,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 49 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 02:33:16,315 INFO L241 Difference]: Finished difference. Result has 18 places, 9 transitions, 29 flow [2020-10-16 02:33:16,316 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=29, PETRI_PLACES=18, PETRI_TRANSITIONS=9} [2020-10-16 02:33:16,317 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2020-10-16 02:33:16,318 INFO L481 AbstractCegarLoop]: Abstraction has has 18 places, 9 transitions, 29 flow [2020-10-16 02:33:16,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 02:33:16,318 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:16,318 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:16,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 02:33:16,319 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 02:33:16,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:16,319 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-10-16 02:33:16,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:16,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923547942] [2020-10-16 02:33:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:33:16,348 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:33:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:33:16,367 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:33:16,397 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 02:33:16,397 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 02:33:16,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 02:33:16,398 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 02:33:16,400 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 02:33:16,401 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 02:33:16,411 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,411 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,412 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,412 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,412 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,412 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,412 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,412 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,414 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,414 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,414 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,414 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,414 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,416 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,416 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,416 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,418 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,418 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,418 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,418 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,418 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,421 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,421 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,421 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,422 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,422 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,424 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,424 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,424 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,425 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,425 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,425 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,427 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,428 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,428 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,428 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,428 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,428 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:16,431 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 02:33:16,431 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 02:33:16,431 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 02:33:16,431 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 02:33:16,431 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 02:33:16,432 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 02:33:16,432 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 02:33:16,432 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 02:33:16,432 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 02:33:16,435 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-10-16 02:33:16,452 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-16 02:33:16,452 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 02:33:16,454 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 02:33:16,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 74 transitions, 172 flow [2020-10-16 02:33:16,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 63 transitions, 141 flow [2020-10-16 02:33:16,456 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 02:33:16,456 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 63 transitions, 141 flow [2020-10-16 02:33:16,456 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 63 transitions, 141 flow [2020-10-16 02:33:16,457 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 68 places, 63 transitions, 141 flow [2020-10-16 02:33:16,473 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-16 02:33:16,474 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 02:33:16,475 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 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 132 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 72. Up to 6 conditions per place. [2020-10-16 02:33:16,478 INFO L117 LiptonReduction]: Number of co-enabled transitions 920 [2020-10-16 02:33:17,885 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-16 02:33:18,071 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-16 02:33:18,283 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-16 02:33:18,388 INFO L132 LiptonReduction]: Checked pairs total: 1184 [2020-10-16 02:33:18,389 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-16 02:33:18,389 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1933 [2020-10-16 02:33:18,392 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 02:33:18,392 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:33:18,392 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:18,393 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 02:33:18,393 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:33:18,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:18,394 INFO L82 PathProgramCache]: Analyzing trace with hash 375535, now seen corresponding path program 1 times [2020-10-16 02:33:18,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:18,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782780174] [2020-10-16 02:33:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:18,445 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 02:33:18,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782780174] [2020-10-16 02:33:18,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:18,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 02:33:18,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795032374] [2020-10-16 02:33:18,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 02:33:18,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:18,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 02:33:18,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 02:33:18,449 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 131 [2020-10-16 02:33:18,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states. [2020-10-16 02:33:18,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:18,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 131 [2020-10-16 02:33:18,451 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:18,529 INFO L129 PetriNetUnfolder]: 122/218 cut-off events. [2020-10-16 02:33:18,529 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 02:33:18,531 INFO L80 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 218 events. 122/218 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1010 event pairs, 42 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 431. Up to 135 conditions per place. [2020-10-16 02:33:18,533 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 13 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2020-10-16 02:33:18,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 23 transitions, 93 flow [2020-10-16 02:33:18,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 02:33:18,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 02:33:18,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2020-10-16 02:33:18,538 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6692111959287532 [2020-10-16 02:33:18,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2020-10-16 02:33:18,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2020-10-16 02:33:18,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:18,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2020-10-16 02:33:18,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 02:33:18,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 02:33:18,542 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 02:33:18,542 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states and 263 transitions. [2020-10-16 02:33:18,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 23 transitions, 93 flow [2020-10-16 02:33:18,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 90 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 02:33:18,544 INFO L241 Difference]: Finished difference. Result has 26 places, 18 transitions, 63 flow [2020-10-16 02:33:18,544 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2020-10-16 02:33:18,544 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2020-10-16 02:33:18,544 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 63 flow [2020-10-16 02:33:18,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 02:33:18,545 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:18,545 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:18,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 02:33:18,545 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:33:18,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:18,546 INFO L82 PathProgramCache]: Analyzing trace with hash 243832858, now seen corresponding path program 1 times [2020-10-16 02:33:18,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:18,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608419405] [2020-10-16 02:33:18,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:18,663 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 02:33:18,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608419405] [2020-10-16 02:33:18,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:18,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:33:18,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022820935] [2020-10-16 02:33:18,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:33:18,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:18,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:33:18,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:33:18,668 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 131 [2020-10-16 02:33:18,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 63 flow. Second operand 5 states. [2020-10-16 02:33:18,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:18,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 131 [2020-10-16 02:33:18,669 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:18,827 INFO L129 PetriNetUnfolder]: 126/248 cut-off events. [2020-10-16 02:33:18,827 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-16 02:33:18,829 INFO L80 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 248 events. 126/248 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1263 event pairs, 20 based on Foata normal form. 11/218 useless extension candidates. Maximal degree in co-relation 586. Up to 68 conditions per place. [2020-10-16 02:33:18,831 INFO L132 encePairwiseOnDemand]: 126/131 looper letters, 23 selfloop transitions, 7 changer transitions 0/36 dead transitions. [2020-10-16 02:33:18,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 36 transitions, 166 flow [2020-10-16 02:33:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:33:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:33:18,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 505 transitions. [2020-10-16 02:33:18,835 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6424936386768448 [2020-10-16 02:33:18,836 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 505 transitions. [2020-10-16 02:33:18,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 505 transitions. [2020-10-16 02:33:18,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:18,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 505 transitions. [2020-10-16 02:33:18,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:33:18,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:33:18,842 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:33:18,842 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 63 flow. Second operand 6 states and 505 transitions. [2020-10-16 02:33:18,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 36 transitions, 166 flow [2020-10-16 02:33:18,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 02:33:18,846 INFO L241 Difference]: Finished difference. Result has 33 places, 21 transitions, 99 flow [2020-10-16 02:33:18,847 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=99, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2020-10-16 02:33:18,847 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2020-10-16 02:33:18,847 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 99 flow [2020-10-16 02:33:18,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:33:18,847 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:18,848 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:18,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 02:33:18,848 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:33:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:18,849 INFO L82 PathProgramCache]: Analyzing trace with hash -88525361, now seen corresponding path program 1 times [2020-10-16 02:33:18,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:18,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498322879] [2020-10-16 02:33:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:18,919 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 02:33:18,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498322879] [2020-10-16 02:33:18,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:18,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:33:18,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090176446] [2020-10-16 02:33:18,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:33:18,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:18,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:33:18,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:33:18,923 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 131 [2020-10-16 02:33:18,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 99 flow. Second operand 5 states. [2020-10-16 02:33:18,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:18,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 131 [2020-10-16 02:33:18,924 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:19,071 INFO L129 PetriNetUnfolder]: 126/255 cut-off events. [2020-10-16 02:33:19,071 INFO L130 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2020-10-16 02:33:19,073 INFO L80 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 255 events. 126/255 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1283 event pairs, 23 based on Foata normal form. 12/224 useless extension candidates. Maximal degree in co-relation 700. Up to 61 conditions per place. [2020-10-16 02:33:19,076 INFO L132 encePairwiseOnDemand]: 126/131 looper letters, 24 selfloop transitions, 9 changer transitions 0/39 dead transitions. [2020-10-16 02:33:19,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 224 flow [2020-10-16 02:33:19,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:33:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:33:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 506 transitions. [2020-10-16 02:33:19,079 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6437659033078881 [2020-10-16 02:33:19,079 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 506 transitions. [2020-10-16 02:33:19,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 506 transitions. [2020-10-16 02:33:19,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:19,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 506 transitions. [2020-10-16 02:33:19,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:33:19,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:33:19,083 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:33:19,083 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 99 flow. Second operand 6 states and 506 transitions. [2020-10-16 02:33:19,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 224 flow [2020-10-16 02:33:19,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 213 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 02:33:19,087 INFO L241 Difference]: Finished difference. Result has 39 places, 24 transitions, 141 flow [2020-10-16 02:33:19,088 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2020-10-16 02:33:19,088 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 15 predicate places. [2020-10-16 02:33:19,089 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 141 flow [2020-10-16 02:33:19,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:33:19,089 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:19,089 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:19,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 02:33:19,090 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:33:19,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:19,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1548222349, now seen corresponding path program 1 times [2020-10-16 02:33:19,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:19,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937377086] [2020-10-16 02:33:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:33:19,110 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:33:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:33:19,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:33:19,162 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 02:33:19,162 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 02:33:19,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 02:33:19,165 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 02:33:19,165 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 02:33:19,167 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 02:33:19,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,196 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,197 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,197 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,197 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,197 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,198 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,199 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,199 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,200 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,200 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,204 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,204 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,204 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,204 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,206 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,206 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:19,208 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 02:33:19,209 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 02:33:19,209 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 02:33:19,209 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 02:33:19,209 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 02:33:19,209 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 02:33:19,209 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 02:33:19,209 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 02:33:19,209 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 02:33:19,212 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-10-16 02:33:19,227 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-16 02:33:19,227 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 02:33:19,228 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 02:33:19,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 90 transitions, 222 flow [2020-10-16 02:33:19,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 69 transitions, 162 flow [2020-10-16 02:33:19,231 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 02:33:19,231 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 02:33:19,231 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 02:33:19,232 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-10-16 02:33:19,249 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-16 02:33:19,250 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 02:33:19,250 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129 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 169 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 98. Up to 8 conditions per place. [2020-10-16 02:33:19,253 INFO L117 LiptonReduction]: Number of co-enabled transitions 1308 [2020-10-16 02:33:20,437 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-16 02:33:20,779 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 02:33:20,805 INFO L132 LiptonReduction]: Checked pairs total: 1815 [2020-10-16 02:33:20,805 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-16 02:33:20,806 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1575 [2020-10-16 02:33:20,807 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 02:33:20,807 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:33:20,807 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:20,807 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 02:33:20,807 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 02:33:20,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:20,808 INFO L82 PathProgramCache]: Analyzing trace with hash 537369, now seen corresponding path program 1 times [2020-10-16 02:33:20,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:20,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923327094] [2020-10-16 02:33:20,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:20,850 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 02:33:20,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923327094] [2020-10-16 02:33:20,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:20,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 02:33:20,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572596993] [2020-10-16 02:33:20,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 02:33:20,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:20,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 02:33:20,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 02:33:20,854 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 147 [2020-10-16 02:33:20,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states. [2020-10-16 02:33:20,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:20,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 147 [2020-10-16 02:33:20,855 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:21,027 INFO L129 PetriNetUnfolder]: 582/877 cut-off events. [2020-10-16 02:33:21,028 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 02:33:21,030 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 877 events. 582/877 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4446 event pairs, 147 based on Foata normal form. 0/675 useless extension candidates. Maximal degree in co-relation 1751. Up to 675 conditions per place. [2020-10-16 02:33:21,037 INFO L132 encePairwiseOnDemand]: 142/147 looper letters, 16 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2020-10-16 02:33:21,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 120 flow [2020-10-16 02:33:21,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 02:33:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 02:33:21,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2020-10-16 02:33:21,041 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2020-10-16 02:33:21,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2020-10-16 02:33:21,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2020-10-16 02:33:21,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:21,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2020-10-16 02:33:21,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 02:33:21,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 02:33:21,045 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 02:33:21,045 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states and 297 transitions. [2020-10-16 02:33:21,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 120 flow [2020-10-16 02:33:21,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 113 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 02:33:21,047 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 81 flow [2020-10-16 02:33:21,048 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2020-10-16 02:33:21,048 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2020-10-16 02:33:21,048 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 81 flow [2020-10-16 02:33:21,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 02:33:21,049 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:21,049 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:21,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 02:33:21,049 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 02:33:21,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:21,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1157508092, now seen corresponding path program 1 times [2020-10-16 02:33:21,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:21,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612396864] [2020-10-16 02:33:21,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:21,108 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 02:33:21,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612396864] [2020-10-16 02:33:21,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:21,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:33:21,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536270308] [2020-10-16 02:33:21,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:33:21,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:21,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:33:21,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:33:21,112 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 147 [2020-10-16 02:33:21,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 81 flow. Second operand 5 states. [2020-10-16 02:33:21,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:21,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 147 [2020-10-16 02:33:21,114 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:21,429 INFO L129 PetriNetUnfolder]: 740/1180 cut-off events. [2020-10-16 02:33:21,430 INFO L130 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2020-10-16 02:33:21,436 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2875 conditions, 1180 events. 740/1180 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 6973 event pairs, 109 based on Foata normal form. 35/1052 useless extension candidates. Maximal degree in co-relation 2862. Up to 449 conditions per place. [2020-10-16 02:33:21,449 INFO L132 encePairwiseOnDemand]: 141/147 looper letters, 34 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2020-10-16 02:33:21,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 245 flow [2020-10-16 02:33:21,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:33:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:33:21,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 585 transitions. [2020-10-16 02:33:21,454 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2020-10-16 02:33:21,454 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 585 transitions. [2020-10-16 02:33:21,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 585 transitions. [2020-10-16 02:33:21,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:21,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 585 transitions. [2020-10-16 02:33:21,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:33:21,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:33:21,461 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:33:21,461 INFO L185 Difference]: Start difference. First operand has 31 places, 22 transitions, 81 flow. Second operand 6 states and 585 transitions. [2020-10-16 02:33:21,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 245 flow [2020-10-16 02:33:21,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 02:33:21,465 INFO L241 Difference]: Finished difference. Result has 38 places, 28 transitions, 142 flow [2020-10-16 02:33:21,465 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2020-10-16 02:33:21,466 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2020-10-16 02:33:21,466 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 142 flow [2020-10-16 02:33:21,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:33:21,466 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:21,466 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:21,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 02:33:21,466 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 02:33:21,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:21,467 INFO L82 PathProgramCache]: Analyzing trace with hash -204391609, now seen corresponding path program 1 times [2020-10-16 02:33:21,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:21,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379934689] [2020-10-16 02:33:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:21,534 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 02:33:21,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379934689] [2020-10-16 02:33:21,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:21,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:33:21,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147548840] [2020-10-16 02:33:21,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:33:21,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:21,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:33:21,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:33:21,537 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 147 [2020-10-16 02:33:21,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 142 flow. Second operand 5 states. [2020-10-16 02:33:21,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:21,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 147 [2020-10-16 02:33:21,539 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:21,894 INFO L129 PetriNetUnfolder]: 895/1501 cut-off events. [2020-10-16 02:33:21,895 INFO L130 PetriNetUnfolder]: For 985/985 co-relation queries the response was YES. [2020-10-16 02:33:21,902 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4403 conditions, 1501 events. 895/1501 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 9894 event pairs, 147 based on Foata normal form. 47/1334 useless extension candidates. Maximal degree in co-relation 4386. Up to 588 conditions per place. [2020-10-16 02:33:21,916 INFO L132 encePairwiseOnDemand]: 141/147 looper letters, 40 selfloop transitions, 15 changer transitions 0/62 dead transitions. [2020-10-16 02:33:21,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 395 flow [2020-10-16 02:33:21,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:33:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:33:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 586 transitions. [2020-10-16 02:33:21,920 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6643990929705216 [2020-10-16 02:33:21,921 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 586 transitions. [2020-10-16 02:33:21,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 586 transitions. [2020-10-16 02:33:21,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:21,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 586 transitions. [2020-10-16 02:33:21,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:33:21,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:33:21,928 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:33:21,928 INFO L185 Difference]: Start difference. First operand has 38 places, 28 transitions, 142 flow. Second operand 6 states and 586 transitions. [2020-10-16 02:33:21,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 395 flow [2020-10-16 02:33:21,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 374 flow, removed 4 selfloop flow, removed 2 redundant places. [2020-10-16 02:33:21,945 INFO L241 Difference]: Finished difference. Result has 44 places, 37 transitions, 244 flow [2020-10-16 02:33:21,946 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2020-10-16 02:33:21,946 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2020-10-16 02:33:21,947 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 244 flow [2020-10-16 02:33:21,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:33:21,947 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:21,947 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:21,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 02:33:21,948 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 02:33:21,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:21,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1864579528, now seen corresponding path program 1 times [2020-10-16 02:33:21,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:21,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689520757] [2020-10-16 02:33:21,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 02:33:22,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689520757] [2020-10-16 02:33:22,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738107672] [2020-10-16 02:33:22,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:33:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:22,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:33:22,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:33:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 02:33:22,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:33:22,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:33:22,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126647213] [2020-10-16 02:33:22,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:33:22,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:22,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:33:22,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:33:22,275 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 147 [2020-10-16 02:33:22,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 244 flow. Second operand 12 states. [2020-10-16 02:33:22,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:22,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 147 [2020-10-16 02:33:22,278 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:23,012 INFO L129 PetriNetUnfolder]: 908/1533 cut-off events. [2020-10-16 02:33:23,013 INFO L130 PetriNetUnfolder]: For 1821/1821 co-relation queries the response was YES. [2020-10-16 02:33:23,023 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5231 conditions, 1533 events. 908/1533 cut-off events. For 1821/1821 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 10309 event pairs, 98 based on Foata normal form. 11/1325 useless extension candidates. Maximal degree in co-relation 5211. Up to 462 conditions per place. [2020-10-16 02:33:23,037 INFO L132 encePairwiseOnDemand]: 140/147 looper letters, 63 selfloop transitions, 29 changer transitions 0/98 dead transitions. [2020-10-16 02:33:23,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 650 flow [2020-10-16 02:33:23,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:33:23,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:33:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1234 transitions. [2020-10-16 02:33:23,043 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6457352171637886 [2020-10-16 02:33:23,044 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1234 transitions. [2020-10-16 02:33:23,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1234 transitions. [2020-10-16 02:33:23,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:23,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1234 transitions. [2020-10-16 02:33:23,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:33:23,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:33:23,053 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:33:23,053 INFO L185 Difference]: Start difference. First operand has 44 places, 37 transitions, 244 flow. Second operand 13 states and 1234 transitions. [2020-10-16 02:33:23,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 98 transitions, 650 flow [2020-10-16 02:33:23,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 98 transitions, 634 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 02:33:23,076 INFO L241 Difference]: Finished difference. Result has 58 places, 47 transitions, 388 flow [2020-10-16 02:33:23,077 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=388, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2020-10-16 02:33:23,077 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2020-10-16 02:33:23,077 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 388 flow [2020-10-16 02:33:23,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:33:23,078 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:23,078 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:23,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 02:33:23,292 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 02:33:23,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:23,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1148161428, now seen corresponding path program 2 times [2020-10-16 02:33:23,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:23,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454984991] [2020-10-16 02:33:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:23,378 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 02:33:23,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454984991] [2020-10-16 02:33:23,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:23,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:33:23,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60533811] [2020-10-16 02:33:23,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:33:23,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:23,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:33:23,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:33:23,385 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 147 [2020-10-16 02:33:23,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 388 flow. Second operand 7 states. [2020-10-16 02:33:23,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:23,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 147 [2020-10-16 02:33:23,386 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:24,004 INFO L129 PetriNetUnfolder]: 920/1573 cut-off events. [2020-10-16 02:33:24,004 INFO L130 PetriNetUnfolder]: For 3297/3297 co-relation queries the response was YES. [2020-10-16 02:33:24,014 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5993 conditions, 1573 events. 920/1573 cut-off events. For 3297/3297 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 10789 event pairs, 101 based on Foata normal form. 11/1360 useless extension candidates. Maximal degree in co-relation 5969. Up to 392 conditions per place. [2020-10-16 02:33:24,028 INFO L132 encePairwiseOnDemand]: 140/147 looper letters, 64 selfloop transitions, 32 changer transitions 0/102 dead transitions. [2020-10-16 02:33:24,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 102 transitions, 773 flow [2020-10-16 02:33:24,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:33:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:33:24,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1234 transitions. [2020-10-16 02:33:24,034 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6457352171637886 [2020-10-16 02:33:24,035 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1234 transitions. [2020-10-16 02:33:24,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1234 transitions. [2020-10-16 02:33:24,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:24,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1234 transitions. [2020-10-16 02:33:24,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:33:24,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:33:24,045 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:33:24,046 INFO L185 Difference]: Start difference. First operand has 58 places, 47 transitions, 388 flow. Second operand 13 states and 1234 transitions. [2020-10-16 02:33:24,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 102 transitions, 773 flow [2020-10-16 02:33:24,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 710 flow, removed 6 selfloop flow, removed 7 redundant places. [2020-10-16 02:33:24,102 INFO L241 Difference]: Finished difference. Result has 66 places, 52 transitions, 455 flow [2020-10-16 02:33:24,103 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=455, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2020-10-16 02:33:24,103 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2020-10-16 02:33:24,103 INFO L481 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 455 flow [2020-10-16 02:33:24,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:33:24,103 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:24,104 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:24,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 02:33:24,107 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 02:33:24,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:24,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1717126990, now seen corresponding path program 1 times [2020-10-16 02:33:24,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:24,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873250606] [2020-10-16 02:33:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:24,163 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 02:33:24,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873250606] [2020-10-16 02:33:24,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:24,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:33:24,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035979676] [2020-10-16 02:33:24,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:33:24,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:24,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:33:24,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:33:24,168 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 147 [2020-10-16 02:33:24,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 455 flow. Second operand 5 states. [2020-10-16 02:33:24,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:24,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 147 [2020-10-16 02:33:24,169 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:24,569 INFO L129 PetriNetUnfolder]: 1041/1845 cut-off events. [2020-10-16 02:33:24,569 INFO L130 PetriNetUnfolder]: For 5664/5670 co-relation queries the response was YES. [2020-10-16 02:33:24,581 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7280 conditions, 1845 events. 1041/1845 cut-off events. For 5664/5670 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 13375 event pairs, 120 based on Foata normal form. 63/1634 useless extension candidates. Maximal degree in co-relation 7254. Up to 781 conditions per place. [2020-10-16 02:33:24,596 INFO L132 encePairwiseOnDemand]: 141/147 looper letters, 66 selfloop transitions, 30 changer transitions 0/103 dead transitions. [2020-10-16 02:33:24,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 103 transitions, 1059 flow [2020-10-16 02:33:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:33:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:33:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 580 transitions. [2020-10-16 02:33:24,599 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6575963718820862 [2020-10-16 02:33:24,600 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 580 transitions. [2020-10-16 02:33:24,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 580 transitions. [2020-10-16 02:33:24,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:24,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 580 transitions. [2020-10-16 02:33:24,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:33:24,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:33:24,603 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:33:24,604 INFO L185 Difference]: Start difference. First operand has 66 places, 52 transitions, 455 flow. Second operand 6 states and 580 transitions. [2020-10-16 02:33:24,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 103 transitions, 1059 flow [2020-10-16 02:33:24,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 946 flow, removed 10 selfloop flow, removed 9 redundant places. [2020-10-16 02:33:24,662 INFO L241 Difference]: Finished difference. Result has 65 places, 73 transitions, 739 flow [2020-10-16 02:33:24,663 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=739, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2020-10-16 02:33:24,663 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2020-10-16 02:33:24,664 INFO L481 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 739 flow [2020-10-16 02:33:24,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:33:24,664 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:24,664 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:24,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 02:33:24,665 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 02:33:24,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:24,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1694375059, now seen corresponding path program 1 times [2020-10-16 02:33:24,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:24,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955414565] [2020-10-16 02:33:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:33:24,680 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:33:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:33:24,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:33:24,697 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 02:33:24,698 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 02:33:24,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 02:33:24,698 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 02:33:24,699 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 02:33:24,699 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 02:33:24,713 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,713 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,713 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,713 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,713 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,713 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,714 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,714 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,714 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,714 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,714 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,714 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,715 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,715 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,715 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,715 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,715 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,715 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,715 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,716 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,716 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,716 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,717 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,717 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,717 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,717 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,717 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,718 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,718 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,718 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,718 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,718 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,719 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,719 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,719 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,719 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,719 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,719 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,720 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,720 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,720 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,720 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,720 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,721 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,721 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,721 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,721 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,721 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,721 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,722 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,722 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,722 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,725 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,725 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,726 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,727 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,727 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,731 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,731 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,735 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,736 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,736 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,736 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,738 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,738 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:33:24,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 02:33:24,750 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 02:33:24,750 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 02:33:24,750 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 02:33:24,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 02:33:24,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 02:33:24,750 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 02:33:24,750 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 02:33:24,751 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 02:33:24,753 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-10-16 02:33:24,769 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-16 02:33:24,769 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 02:33:24,771 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 200 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 02:33:24,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 106 transitions, 276 flow [2020-10-16 02:33:24,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 185 flow [2020-10-16 02:33:24,772 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 02:33:24,773 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 185 flow [2020-10-16 02:33:24,773 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 185 flow [2020-10-16 02:33:24,773 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 185 flow [2020-10-16 02:33:24,791 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-16 02:33:24,791 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 02:33:24,792 INFO L80 FinitePrefix]: Finished finitePrefix Result has 157 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 198 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 125. Up to 10 conditions per place. [2020-10-16 02:33:24,795 INFO L117 LiptonReduction]: Number of co-enabled transitions 1756 [2020-10-16 02:33:25,859 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-16 02:33:26,221 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 02:33:26,394 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 02:33:26,405 INFO L132 LiptonReduction]: Checked pairs total: 2872 [2020-10-16 02:33:26,405 INFO L134 LiptonReduction]: Total number of compositions: 64 [2020-10-16 02:33:26,406 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1634 [2020-10-16 02:33:26,408 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 02:33:26,408 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:33:26,409 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:26,409 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 02:33:26,409 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 02:33:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:26,410 INFO L82 PathProgramCache]: Analyzing trace with hash 719895, now seen corresponding path program 1 times [2020-10-16 02:33:26,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:26,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288285803] [2020-10-16 02:33:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:26,455 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 02:33:26,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288285803] [2020-10-16 02:33:26,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:26,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 02:33:26,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173626334] [2020-10-16 02:33:26,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 02:33:26,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:26,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 02:33:26,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 02:33:26,458 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 170 [2020-10-16 02:33:26,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states. [2020-10-16 02:33:26,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:26,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 170 [2020-10-16 02:33:26,461 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:26,838 INFO L129 PetriNetUnfolder]: 2434/3340 cut-off events. [2020-10-16 02:33:26,838 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 02:33:26,847 INFO L80 FinitePrefix]: Finished finitePrefix Result has 6692 conditions, 3340 events. 2434/3340 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 18034 event pairs, 518 based on Foata normal form. 0/2699 useless extension candidates. Maximal degree in co-relation 6680. Up to 2863 conditions per place. [2020-10-16 02:33:26,874 INFO L132 encePairwiseOnDemand]: 164/170 looper letters, 19 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2020-10-16 02:33:26,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 149 flow [2020-10-16 02:33:26,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 02:33:26,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 02:33:26,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2020-10-16 02:33:26,878 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6607843137254902 [2020-10-16 02:33:26,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2020-10-16 02:33:26,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2020-10-16 02:33:26,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:26,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2020-10-16 02:33:26,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 02:33:26,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 02:33:26,882 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 02:33:26,883 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states and 337 transitions. [2020-10-16 02:33:26,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 149 flow [2020-10-16 02:33:26,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 136 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 02:33:26,886 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 99 flow [2020-10-16 02:33:26,886 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2020-10-16 02:33:26,887 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2020-10-16 02:33:26,887 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 99 flow [2020-10-16 02:33:26,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 02:33:26,887 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:26,887 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:26,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 02:33:26,888 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 02:33:26,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:26,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1994870888, now seen corresponding path program 1 times [2020-10-16 02:33:26,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:26,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800344415] [2020-10-16 02:33:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:26,952 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 02:33:26,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800344415] [2020-10-16 02:33:26,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:26,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:33:26,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694628550] [2020-10-16 02:33:26,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:33:26,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:26,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:33:26,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:33:26,956 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 170 [2020-10-16 02:33:26,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 99 flow. Second operand 5 states. [2020-10-16 02:33:26,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:26,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 170 [2020-10-16 02:33:26,958 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:27,601 INFO L129 PetriNetUnfolder]: 3576/5078 cut-off events. [2020-10-16 02:33:27,602 INFO L130 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2020-10-16 02:33:27,632 INFO L80 FinitePrefix]: Finished finitePrefix Result has 12418 conditions, 5078 events. 3576/5078 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 31693 event pairs, 508 based on Foata normal form. 107/4599 useless extension candidates. Maximal degree in co-relation 12404. Up to 2253 conditions per place. [2020-10-16 02:33:27,672 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 41 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2020-10-16 02:33:27,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 304 flow [2020-10-16 02:33:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:33:27,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:33:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 667 transitions. [2020-10-16 02:33:27,675 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.653921568627451 [2020-10-16 02:33:27,675 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 667 transitions. [2020-10-16 02:33:27,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 667 transitions. [2020-10-16 02:33:27,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:27,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 667 transitions. [2020-10-16 02:33:27,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:33:27,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:33:27,679 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:33:27,679 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 99 flow. Second operand 6 states and 667 transitions. [2020-10-16 02:33:27,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 304 flow [2020-10-16 02:33:27,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 02:33:27,682 INFO L241 Difference]: Finished difference. Result has 43 places, 34 transitions, 179 flow [2020-10-16 02:33:27,682 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2020-10-16 02:33:27,682 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2020-10-16 02:33:27,682 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 179 flow [2020-10-16 02:33:27,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:33:27,682 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:27,683 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:27,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 02:33:27,683 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 02:33:27,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:27,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1753297957, now seen corresponding path program 1 times [2020-10-16 02:33:27,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:27,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528947863] [2020-10-16 02:33:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:27,733 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 02:33:27,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528947863] [2020-10-16 02:33:27,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:27,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:33:27,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382916996] [2020-10-16 02:33:27,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:33:27,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:27,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:33:27,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:33:27,737 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 170 [2020-10-16 02:33:27,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 179 flow. Second operand 5 states. [2020-10-16 02:33:27,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:27,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 170 [2020-10-16 02:33:27,738 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:28,481 INFO L129 PetriNetUnfolder]: 5127/7515 cut-off events. [2020-10-16 02:33:28,482 INFO L130 PetriNetUnfolder]: For 4030/4030 co-relation queries the response was YES. [2020-10-16 02:33:28,532 INFO L80 FinitePrefix]: Finished finitePrefix Result has 22418 conditions, 7515 events. 5127/7515 cut-off events. For 4030/4030 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 52488 event pairs, 842 based on Foata normal form. 157/6792 useless extension candidates. Maximal degree in co-relation 22400. Up to 3474 conditions per place. [2020-10-16 02:33:28,587 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 49 selfloop transitions, 20 changer transitions 0/77 dead transitions. [2020-10-16 02:33:28,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 77 transitions, 502 flow [2020-10-16 02:33:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:33:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:33:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2020-10-16 02:33:28,590 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6490196078431373 [2020-10-16 02:33:28,590 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2020-10-16 02:33:28,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2020-10-16 02:33:28,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:28,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2020-10-16 02:33:28,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:33:28,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:33:28,596 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:33:28,596 INFO L185 Difference]: Start difference. First operand has 43 places, 34 transitions, 179 flow. Second operand 6 states and 662 transitions. [2020-10-16 02:33:28,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 77 transitions, 502 flow [2020-10-16 02:33:28,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 471 flow, removed 6 selfloop flow, removed 2 redundant places. [2020-10-16 02:33:28,632 INFO L241 Difference]: Finished difference. Result has 49 places, 46 transitions, 311 flow [2020-10-16 02:33:28,632 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2020-10-16 02:33:28,633 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2020-10-16 02:33:28,633 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 311 flow [2020-10-16 02:33:28,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:33:28,633 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:28,633 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:28,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 02:33:28,634 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 02:33:28,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:28,634 INFO L82 PathProgramCache]: Analyzing trace with hash 180892130, now seen corresponding path program 1 times [2020-10-16 02:33:28,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:28,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140442531] [2020-10-16 02:33:28,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 02:33:28,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140442531] [2020-10-16 02:33:28,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626147846] [2020-10-16 02:33:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:33:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:28,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:33:28,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:33:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 02:33:28,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:33:28,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:33:28,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513755695] [2020-10-16 02:33:28,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:33:28,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:28,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:33:28,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:33:28,868 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 02:33:28,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 311 flow. Second operand 12 states. [2020-10-16 02:33:28,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:28,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 02:33:28,870 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:30,000 INFO L129 PetriNetUnfolder]: 5374/7933 cut-off events. [2020-10-16 02:33:30,000 INFO L130 PetriNetUnfolder]: For 8803/8803 co-relation queries the response was YES. [2020-10-16 02:33:30,046 INFO L80 FinitePrefix]: Finished finitePrefix Result has 27433 conditions, 7933 events. 5374/7933 cut-off events. For 8803/8803 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 56592 event pairs, 681 based on Foata normal form. 35/7031 useless extension candidates. Maximal degree in co-relation 27412. Up to 2761 conditions per place. [2020-10-16 02:33:30,104 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 85 selfloop transitions, 38 changer transitions 0/130 dead transitions. [2020-10-16 02:33:30,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 130 transitions, 879 flow [2020-10-16 02:33:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:33:30,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:33:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1407 transitions. [2020-10-16 02:33:30,111 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6366515837104072 [2020-10-16 02:33:30,111 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1407 transitions. [2020-10-16 02:33:30,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1407 transitions. [2020-10-16 02:33:30,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:30,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1407 transitions. [2020-10-16 02:33:30,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:33:30,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:33:30,123 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:33:30,123 INFO L185 Difference]: Start difference. First operand has 49 places, 46 transitions, 311 flow. Second operand 13 states and 1407 transitions. [2020-10-16 02:33:30,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 130 transitions, 879 flow [2020-10-16 02:33:30,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 130 transitions, 853 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 02:33:30,317 INFO L241 Difference]: Finished difference. Result has 63 places, 59 transitions, 496 flow [2020-10-16 02:33:30,318 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=496, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2020-10-16 02:33:30,318 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2020-10-16 02:33:30,318 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 496 flow [2020-10-16 02:33:30,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:33:30,319 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:30,319 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:30,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 02:33:30,534 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 02:33:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:30,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1292148820, now seen corresponding path program 2 times [2020-10-16 02:33:30,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:30,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804486914] [2020-10-16 02:33:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:30,626 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 02:33:30,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804486914] [2020-10-16 02:33:30,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:30,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:33:30,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335892133] [2020-10-16 02:33:30,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:33:30,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:30,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:33:30,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:33:30,630 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 02:33:30,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 496 flow. Second operand 7 states. [2020-10-16 02:33:30,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:30,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 02:33:30,632 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:32,183 INFO L129 PetriNetUnfolder]: 5620/8365 cut-off events. [2020-10-16 02:33:32,183 INFO L130 PetriNetUnfolder]: For 15853/15853 co-relation queries the response was YES. [2020-10-16 02:33:32,237 INFO L80 FinitePrefix]: Finished finitePrefix Result has 32402 conditions, 8365 events. 5620/8365 cut-off events. For 15853/15853 co-relation queries the response was YES. Maximal size of possible extension queue 1114. Compared 61420 event pairs, 704 based on Foata normal form. 35/7398 useless extension candidates. Maximal degree in co-relation 32377. Up to 2492 conditions per place. [2020-10-16 02:33:32,290 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 88 selfloop transitions, 43 changer transitions 0/138 dead transitions. [2020-10-16 02:33:32,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 138 transitions, 1076 flow [2020-10-16 02:33:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:33:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:33:32,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1407 transitions. [2020-10-16 02:33:32,298 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6366515837104072 [2020-10-16 02:33:32,298 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1407 transitions. [2020-10-16 02:33:32,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1407 transitions. [2020-10-16 02:33:32,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:32,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1407 transitions. [2020-10-16 02:33:32,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:33:32,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:33:32,310 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:33:32,310 INFO L185 Difference]: Start difference. First operand has 63 places, 59 transitions, 496 flow. Second operand 13 states and 1407 transitions. [2020-10-16 02:33:32,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 138 transitions, 1076 flow [2020-10-16 02:33:32,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 138 transitions, 992 flow, removed 8 selfloop flow, removed 7 redundant places. [2020-10-16 02:33:32,692 INFO L241 Difference]: Finished difference. Result has 71 places, 68 transitions, 613 flow [2020-10-16 02:33:32,693 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=613, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2020-10-16 02:33:32,693 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 37 predicate places. [2020-10-16 02:33:32,693 INFO L481 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 613 flow [2020-10-16 02:33:32,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:33:32,693 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:32,693 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:32,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 02:33:32,694 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 02:33:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:32,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1688505154, now seen corresponding path program 1 times [2020-10-16 02:33:32,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:32,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722005049] [2020-10-16 02:33:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:32,757 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 02:33:32,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722005049] [2020-10-16 02:33:32,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:32,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:33:32,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755475174] [2020-10-16 02:33:32,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:33:32,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:32,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:33:32,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:33:32,760 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 170 [2020-10-16 02:33:32,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 613 flow. Second operand 5 states. [2020-10-16 02:33:32,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:32,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 170 [2020-10-16 02:33:32,761 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:35,396 INFO L129 PetriNetUnfolder]: 7715/11859 cut-off events. [2020-10-16 02:33:35,397 INFO L130 PetriNetUnfolder]: For 36680/36686 co-relation queries the response was YES. [2020-10-16 02:33:35,467 INFO L80 FinitePrefix]: Finished finitePrefix Result has 50277 conditions, 11859 events. 7715/11859 cut-off events. For 36680/36686 co-relation queries the response was YES. Maximal size of possible extension queue 1754. Compared 95204 event pairs, 1208 based on Foata normal form. 250/10625 useless extension candidates. Maximal degree in co-relation 50250. Up to 5721 conditions per place. [2020-10-16 02:33:35,513 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 98 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2020-10-16 02:33:35,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 146 transitions, 1574 flow [2020-10-16 02:33:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:33:35,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:33:35,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2020-10-16 02:33:35,516 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6490196078431373 [2020-10-16 02:33:35,516 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2020-10-16 02:33:35,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2020-10-16 02:33:35,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:35,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2020-10-16 02:33:35,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:33:35,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:33:35,520 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:33:35,520 INFO L185 Difference]: Start difference. First operand has 71 places, 68 transitions, 613 flow. Second operand 6 states and 662 transitions. [2020-10-16 02:33:35,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 146 transitions, 1574 flow [2020-10-16 02:33:35,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 146 transitions, 1401 flow, removed 16 selfloop flow, removed 9 redundant places. [2020-10-16 02:33:35,924 INFO L241 Difference]: Finished difference. Result has 70 places, 95 transitions, 962 flow [2020-10-16 02:33:35,924 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=962, PETRI_PLACES=70, PETRI_TRANSITIONS=95} [2020-10-16 02:33:35,925 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 36 predicate places. [2020-10-16 02:33:35,925 INFO L481 AbstractCegarLoop]: Abstraction has has 70 places, 95 transitions, 962 flow [2020-10-16 02:33:35,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:33:35,925 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:35,925 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:35,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 02:33:35,925 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 02:33:35,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:35,926 INFO L82 PathProgramCache]: Analyzing trace with hash -2001719257, now seen corresponding path program 1 times [2020-10-16 02:33:35,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:35,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744522385] [2020-10-16 02:33:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 02:33:35,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744522385] [2020-10-16 02:33:35,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017026240] [2020-10-16 02:33:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:33:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:36,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:33:36,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:33:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 02:33:36,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:33:36,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:33:36,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592552829] [2020-10-16 02:33:36,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:33:36,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:36,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:33:36,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:33:36,142 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 02:33:36,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 962 flow. Second operand 12 states. [2020-10-16 02:33:36,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:36,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 02:33:36,144 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:37,885 INFO L129 PetriNetUnfolder]: 8077/12514 cut-off events. [2020-10-16 02:33:37,886 INFO L130 PetriNetUnfolder]: For 45738/45744 co-relation queries the response was YES. [2020-10-16 02:33:37,986 INFO L80 FinitePrefix]: Finished finitePrefix Result has 56287 conditions, 12514 events. 8077/12514 cut-off events. For 45738/45744 co-relation queries the response was YES. Maximal size of possible extension queue 1913. Compared 103333 event pairs, 990 based on Foata normal form. 75/11018 useless extension candidates. Maximal degree in co-relation 56257. Up to 3566 conditions per place. [2020-10-16 02:33:38,036 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 116 selfloop transitions, 80 changer transitions 0/203 dead transitions. [2020-10-16 02:33:38,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 203 transitions, 2090 flow [2020-10-16 02:33:38,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:33:38,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:33:38,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1409 transitions. [2020-10-16 02:33:38,039 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6375565610859728 [2020-10-16 02:33:38,040 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1409 transitions. [2020-10-16 02:33:38,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1409 transitions. [2020-10-16 02:33:38,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:38,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1409 transitions. [2020-10-16 02:33:38,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:33:38,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:33:38,046 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:33:38,047 INFO L185 Difference]: Start difference. First operand has 70 places, 95 transitions, 962 flow. Second operand 13 states and 1409 transitions. [2020-10-16 02:33:38,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 203 transitions, 2090 flow [2020-10-16 02:33:39,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 203 transitions, 2025 flow, removed 28 selfloop flow, removed 1 redundant places. [2020-10-16 02:33:39,100 INFO L241 Difference]: Finished difference. Result has 84 places, 121 transitions, 1430 flow [2020-10-16 02:33:39,101 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1430, PETRI_PLACES=84, PETRI_TRANSITIONS=121} [2020-10-16 02:33:39,101 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2020-10-16 02:33:39,101 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 121 transitions, 1430 flow [2020-10-16 02:33:39,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:33:39,101 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:39,101 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:39,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:33:39,317 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 02:33:39,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:39,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2144894803, now seen corresponding path program 1 times [2020-10-16 02:33:39,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:39,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802907869] [2020-10-16 02:33:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 02:33:39,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802907869] [2020-10-16 02:33:39,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798795985] [2020-10-16 02:33:39,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:33:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:39,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:33:39,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:33:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 02:33:39,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:33:39,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:33:39,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849652499] [2020-10-16 02:33:39,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:33:39,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:39,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:33:39,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:33:39,601 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 170 [2020-10-16 02:33:39,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 121 transitions, 1430 flow. Second operand 12 states. [2020-10-16 02:33:39,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:39,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 170 [2020-10-16 02:33:39,603 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:41,419 INFO L129 PetriNetUnfolder]: 8352/13049 cut-off events. [2020-10-16 02:33:41,419 INFO L130 PetriNetUnfolder]: For 64367/64367 co-relation queries the response was YES. [2020-10-16 02:33:41,546 INFO L80 FinitePrefix]: Finished finitePrefix Result has 63154 conditions, 13049 events. 8352/13049 cut-off events. For 64367/64367 co-relation queries the response was YES. Maximal size of possible extension queue 2045. Compared 109437 event pairs, 925 based on Foata normal form. 69/11477 useless extension candidates. Maximal degree in co-relation 63120. Up to 3075 conditions per place. [2020-10-16 02:33:41,605 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 136 selfloop transitions, 91 changer transitions 0/234 dead transitions. [2020-10-16 02:33:41,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 234 transitions, 2751 flow [2020-10-16 02:33:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:33:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:33:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1397 transitions. [2020-10-16 02:33:41,609 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6321266968325792 [2020-10-16 02:33:41,610 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1397 transitions. [2020-10-16 02:33:41,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1397 transitions. [2020-10-16 02:33:41,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:41,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1397 transitions. [2020-10-16 02:33:41,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:33:41,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:33:41,618 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:33:41,618 INFO L185 Difference]: Start difference. First operand has 84 places, 121 transitions, 1430 flow. Second operand 13 states and 1397 transitions. [2020-10-16 02:33:41,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 234 transitions, 2751 flow [2020-10-16 02:33:43,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 234 transitions, 2666 flow, removed 26 selfloop flow, removed 3 redundant places. [2020-10-16 02:33:43,693 INFO L241 Difference]: Finished difference. Result has 96 places, 150 transitions, 1973 flow [2020-10-16 02:33:43,694 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1973, PETRI_PLACES=96, PETRI_TRANSITIONS=150} [2020-10-16 02:33:43,694 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 62 predicate places. [2020-10-16 02:33:43,694 INFO L481 AbstractCegarLoop]: Abstraction has has 96 places, 150 transitions, 1973 flow [2020-10-16 02:33:43,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:33:43,694 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:43,694 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:43,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:33:43,905 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 02:33:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:43,906 INFO L82 PathProgramCache]: Analyzing trace with hash 844187883, now seen corresponding path program 2 times [2020-10-16 02:33:43,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:43,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970217063] [2020-10-16 02:33:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 02:33:43,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970217063] [2020-10-16 02:33:43,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:43,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:33:43,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594945859] [2020-10-16 02:33:43,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:33:43,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:43,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:33:43,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:33:43,991 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 170 [2020-10-16 02:33:43,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 150 transitions, 1973 flow. Second operand 7 states. [2020-10-16 02:33:43,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:43,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 170 [2020-10-16 02:33:43,992 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:45,814 INFO L129 PetriNetUnfolder]: 8613/13540 cut-off events. [2020-10-16 02:33:45,814 INFO L130 PetriNetUnfolder]: For 83921/83921 co-relation queries the response was YES. [2020-10-16 02:33:45,959 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70630 conditions, 13540 events. 8613/13540 cut-off events. For 83921/83921 co-relation queries the response was YES. Maximal size of possible extension queue 2164. Compared 115485 event pairs, 978 based on Foata normal form. 55/11876 useless extension candidates. Maximal degree in co-relation 70593. Up to 3100 conditions per place. [2020-10-16 02:33:46,026 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 144 selfloop transitions, 100 changer transitions 0/251 dead transitions. [2020-10-16 02:33:46,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 251 transitions, 3208 flow [2020-10-16 02:33:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:33:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:33:46,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1397 transitions. [2020-10-16 02:33:46,030 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6321266968325792 [2020-10-16 02:33:46,030 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1397 transitions. [2020-10-16 02:33:46,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1397 transitions. [2020-10-16 02:33:46,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:46,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1397 transitions. [2020-10-16 02:33:46,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:33:46,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:33:46,037 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:33:46,037 INFO L185 Difference]: Start difference. First operand has 96 places, 150 transitions, 1973 flow. Second operand 13 states and 1397 transitions. [2020-10-16 02:33:46,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 251 transitions, 3208 flow [2020-10-16 02:33:48,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 251 transitions, 3156 flow, removed 24 selfloop flow, removed 1 redundant places. [2020-10-16 02:33:48,572 INFO L241 Difference]: Finished difference. Result has 110 places, 167 transitions, 2420 flow [2020-10-16 02:33:48,572 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2420, PETRI_PLACES=110, PETRI_TRANSITIONS=167} [2020-10-16 02:33:48,573 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 76 predicate places. [2020-10-16 02:33:48,573 INFO L481 AbstractCegarLoop]: Abstraction has has 110 places, 167 transitions, 2420 flow [2020-10-16 02:33:48,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:33:48,573 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:48,573 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:48,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 02:33:48,574 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 02:33:48,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:48,574 INFO L82 PathProgramCache]: Analyzing trace with hash 844192719, now seen corresponding path program 2 times [2020-10-16 02:33:48,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:48,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966569339] [2020-10-16 02:33:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:48,627 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 02:33:48,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966569339] [2020-10-16 02:33:48,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:48,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:33:48,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728166764] [2020-10-16 02:33:48,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:33:48,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:48,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:33:48,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:33:48,631 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 02:33:48,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 167 transitions, 2420 flow. Second operand 7 states. [2020-10-16 02:33:48,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:48,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 02:33:48,633 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:50,821 INFO L129 PetriNetUnfolder]: 8876/14053 cut-off events. [2020-10-16 02:33:50,822 INFO L130 PetriNetUnfolder]: For 108485/108491 co-relation queries the response was YES. [2020-10-16 02:33:50,969 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78185 conditions, 14053 events. 8876/14053 cut-off events. For 108485/108491 co-relation queries the response was YES. Maximal size of possible extension queue 2296. Compared 121675 event pairs, 1016 based on Foata normal form. 75/12311 useless extension candidates. Maximal degree in co-relation 78144. Up to 3184 conditions per place. [2020-10-16 02:33:51,031 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 148 selfloop transitions, 113 changer transitions 0/268 dead transitions. [2020-10-16 02:33:51,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 268 transitions, 3804 flow [2020-10-16 02:33:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:33:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:33:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1409 transitions. [2020-10-16 02:33:51,034 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6375565610859728 [2020-10-16 02:33:51,034 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1409 transitions. [2020-10-16 02:33:51,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1409 transitions. [2020-10-16 02:33:51,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:51,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1409 transitions. [2020-10-16 02:33:51,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:33:51,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:33:51,041 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:33:51,042 INFO L185 Difference]: Start difference. First operand has 110 places, 167 transitions, 2420 flow. Second operand 13 states and 1409 transitions. [2020-10-16 02:33:51,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 268 transitions, 3804 flow [2020-10-16 02:33:54,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 268 transitions, 3557 flow, removed 29 selfloop flow, removed 9 redundant places. [2020-10-16 02:33:54,402 INFO L241 Difference]: Finished difference. Result has 116 places, 189 transitions, 2838 flow [2020-10-16 02:33:54,402 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2838, PETRI_PLACES=116, PETRI_TRANSITIONS=189} [2020-10-16 02:33:54,402 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 82 predicate places. [2020-10-16 02:33:54,403 INFO L481 AbstractCegarLoop]: Abstraction has has 116 places, 189 transitions, 2838 flow [2020-10-16 02:33:54,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:33:54,403 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:54,403 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:54,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 02:33:54,403 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 02:33:54,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:54,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1920026451, now seen corresponding path program 1 times [2020-10-16 02:33:54,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:54,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272896324] [2020-10-16 02:33:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:54,463 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 02:33:54,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272896324] [2020-10-16 02:33:54,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:54,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:33:54,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255118895] [2020-10-16 02:33:54,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:33:54,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:54,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:33:54,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:33:54,467 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 170 [2020-10-16 02:33:54,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 189 transitions, 2838 flow. Second operand 5 states. [2020-10-16 02:33:54,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:54,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 170 [2020-10-16 02:33:54,468 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:57,060 INFO L129 PetriNetUnfolder]: 11650/18969 cut-off events. [2020-10-16 02:33:57,060 INFO L130 PetriNetUnfolder]: For 193622/193661 co-relation queries the response was YES. [2020-10-16 02:33:57,290 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107448 conditions, 18969 events. 11650/18969 cut-off events. For 193622/193661 co-relation queries the response was YES. Maximal size of possible extension queue 3339. Compared 175143 event pairs, 1305 based on Foata normal form. 415/16918 useless extension candidates. Maximal degree in co-relation 107404. Up to 10089 conditions per place. [2020-10-16 02:33:57,379 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 279 selfloop transitions, 89 changer transitions 0/376 dead transitions. [2020-10-16 02:33:57,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 376 transitions, 6442 flow [2020-10-16 02:33:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:33:57,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:33:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2020-10-16 02:33:57,381 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6490196078431373 [2020-10-16 02:33:57,381 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2020-10-16 02:33:57,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2020-10-16 02:33:57,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:57,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2020-10-16 02:33:57,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:33:57,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:33:57,385 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:33:57,385 INFO L185 Difference]: Start difference. First operand has 116 places, 189 transitions, 2838 flow. Second operand 6 states and 662 transitions. [2020-10-16 02:33:57,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 376 transitions, 6442 flow [2020-10-16 02:34:04,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 376 transitions, 6204 flow, removed 45 selfloop flow, removed 6 redundant places. [2020-10-16 02:34:04,409 INFO L241 Difference]: Finished difference. Result has 118 places, 257 transitions, 4245 flow [2020-10-16 02:34:04,410 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4245, PETRI_PLACES=118, PETRI_TRANSITIONS=257} [2020-10-16 02:34:04,410 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 84 predicate places. [2020-10-16 02:34:04,410 INFO L481 AbstractCegarLoop]: Abstraction has has 118 places, 257 transitions, 4245 flow [2020-10-16 02:34:04,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:34:04,410 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:34:04,411 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:34:04,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-16 02:34:04,411 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 02:34:04,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:34:04,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1825254528, now seen corresponding path program 1 times [2020-10-16 02:34:04,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:34:04,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051165485] [2020-10-16 02:34:04,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:34:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:34:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 02:34:04,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051165485] [2020-10-16 02:34:04,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725532777] [2020-10-16 02:34:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:34:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:34:04,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 02:34:04,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:34:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 02:34:04,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:34:04,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 02:34:04,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942974807] [2020-10-16 02:34:04,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 02:34:04,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:34:04,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 02:34:04,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 02:34:04,746 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 02:34:04,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 257 transitions, 4245 flow. Second operand 16 states. [2020-10-16 02:34:04,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:34:04,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 02:34:04,748 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:34:08,996 INFO L129 PetriNetUnfolder]: 11355/18487 cut-off events. [2020-10-16 02:34:08,997 INFO L130 PetriNetUnfolder]: For 186352/186352 co-relation queries the response was YES. [2020-10-16 02:34:09,263 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109323 conditions, 18487 events. 11355/18487 cut-off events. For 186352/186352 co-relation queries the response was YES. Maximal size of possible extension queue 3363. Compared 175311 event pairs, 834 based on Foata normal form. 17/16057 useless extension candidates. Maximal degree in co-relation 109276. Up to 3848 conditions per place. [2020-10-16 02:34:09,357 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 210 selfloop transitions, 244 changer transitions 0/460 dead transitions. [2020-10-16 02:34:09,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 460 transitions, 7074 flow [2020-10-16 02:34:09,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:34:09,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:34:09,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 02:34:09,362 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 02:34:09,362 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 02:34:09,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 02:34:09,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:34:09,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 02:34:09,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:34:09,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:34:09,372 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:34:09,372 INFO L185 Difference]: Start difference. First operand has 118 places, 257 transitions, 4245 flow. Second operand 29 states and 3035 transitions. [2020-10-16 02:34:09,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 460 transitions, 7074 flow [2020-10-16 02:34:22,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 460 transitions, 6695 flow, removed 183 selfloop flow, removed 1 redundant places. [2020-10-16 02:34:22,540 INFO L241 Difference]: Finished difference. Result has 148 places, 290 transitions, 5180 flow [2020-10-16 02:34:22,541 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5180, PETRI_PLACES=148, PETRI_TRANSITIONS=290} [2020-10-16 02:34:22,541 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 114 predicate places. [2020-10-16 02:34:22,542 INFO L481 AbstractCegarLoop]: Abstraction has has 148 places, 290 transitions, 5180 flow [2020-10-16 02:34:22,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 02:34:22,542 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:34:22,542 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:34:22,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-16 02:34:22,743 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 02:34:22,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:34:22,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1033127428, now seen corresponding path program 2 times [2020-10-16 02:34:22,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:34:22,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549112320] [2020-10-16 02:34:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:34:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:34:22,825 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 02:34:22,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549112320] [2020-10-16 02:34:22,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:34:22,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 02:34:22,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643736407] [2020-10-16 02:34:22,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 02:34:22,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:34:22,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 02:34:22,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 02:34:22,828 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 02:34:22,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 290 transitions, 5180 flow. Second operand 9 states. [2020-10-16 02:34:22,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:34:22,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 02:34:22,829 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:34:26,819 INFO L129 PetriNetUnfolder]: 11378/18550 cut-off events. [2020-10-16 02:34:26,820 INFO L130 PetriNetUnfolder]: For 203823/203823 co-relation queries the response was YES. [2020-10-16 02:34:27,148 INFO L80 FinitePrefix]: Finished finitePrefix Result has 113393 conditions, 18550 events. 11378/18550 cut-off events. For 203823/203823 co-relation queries the response was YES. Maximal size of possible extension queue 3387. Compared 176191 event pairs, 837 based on Foata normal form. 17/16101 useless extension candidates. Maximal degree in co-relation 113342. Up to 3261 conditions per place. [2020-10-16 02:34:27,248 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 212 selfloop transitions, 253 changer transitions 0/471 dead transitions. [2020-10-16 02:34:27,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 471 transitions, 7554 flow [2020-10-16 02:34:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:34:27,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:34:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 02:34:27,777 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 02:34:27,777 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 02:34:27,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 02:34:27,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:34:27,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 02:34:27,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:34:27,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:34:27,793 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:34:27,793 INFO L185 Difference]: Start difference. First operand has 148 places, 290 transitions, 5180 flow. Second operand 29 states and 3035 transitions. [2020-10-16 02:34:27,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 471 transitions, 7554 flow [2020-10-16 02:34:41,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 471 transitions, 7069 flow, removed 32 selfloop flow, removed 20 redundant places. [2020-10-16 02:34:41,453 INFO L241 Difference]: Finished difference. Result has 159 places, 309 transitions, 5637 flow [2020-10-16 02:34:41,454 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=4711, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5637, PETRI_PLACES=159, PETRI_TRANSITIONS=309} [2020-10-16 02:34:41,454 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 125 predicate places. [2020-10-16 02:34:41,454 INFO L481 AbstractCegarLoop]: Abstraction has has 159 places, 309 transitions, 5637 flow [2020-10-16 02:34:41,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 02:34:41,455 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:34:41,455 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:34:41,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-16 02:34:41,455 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 02:34:41,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:34:41,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1195940292, now seen corresponding path program 3 times [2020-10-16 02:34:41,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:34:41,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29192592] [2020-10-16 02:34:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:34:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:34:41,549 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 02:34:41,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29192592] [2020-10-16 02:34:41,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:34:41,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 02:34:41,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010225165] [2020-10-16 02:34:41,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 02:34:41,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:34:41,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 02:34:41,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 02:34:41,552 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 02:34:41,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 309 transitions, 5637 flow. Second operand 9 states. [2020-10-16 02:34:41,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:34:41,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 02:34:41,553 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:34:45,779 INFO L129 PetriNetUnfolder]: 11401/18613 cut-off events. [2020-10-16 02:34:45,779 INFO L130 PetriNetUnfolder]: For 222066/222066 co-relation queries the response was YES. [2020-10-16 02:34:46,154 INFO L80 FinitePrefix]: Finished finitePrefix Result has 117569 conditions, 18613 events. 11401/18613 cut-off events. For 222066/222066 co-relation queries the response was YES. Maximal size of possible extension queue 3411. Compared 177372 event pairs, 810 based on Foata normal form. 17/16151 useless extension candidates. Maximal degree in co-relation 117517. Up to 3271 conditions per place. [2020-10-16 02:34:46,239 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 218 selfloop transitions, 265 changer transitions 0/489 dead transitions. [2020-10-16 02:34:46,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 489 transitions, 8086 flow [2020-10-16 02:34:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:34:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:34:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 02:34:46,244 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 02:34:46,244 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 02:34:46,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 02:34:46,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:34:46,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 02:34:46,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:34:46,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:34:46,260 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:34:46,261 INFO L185 Difference]: Start difference. First operand has 159 places, 309 transitions, 5637 flow. Second operand 29 states and 3035 transitions. [2020-10-16 02:34:46,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 489 transitions, 8086 flow [2020-10-16 02:35:06,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 489 transitions, 7656 flow, removed 28 selfloop flow, removed 18 redundant places. [2020-10-16 02:35:06,946 INFO L241 Difference]: Finished difference. Result has 172 places, 334 transitions, 6293 flow [2020-10-16 02:35:06,947 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=5221, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6293, PETRI_PLACES=172, PETRI_TRANSITIONS=334} [2020-10-16 02:35:06,947 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 138 predicate places. [2020-10-16 02:35:06,947 INFO L481 AbstractCegarLoop]: Abstraction has has 172 places, 334 transitions, 6293 flow [2020-10-16 02:35:06,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 02:35:06,947 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:35:06,948 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:35:06,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-16 02:35:06,948 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 02:35:06,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:35:06,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1204302852, now seen corresponding path program 4 times [2020-10-16 02:35:06,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:35:06,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399152610] [2020-10-16 02:35:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:35:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:35:07,035 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 02:35:07,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399152610] [2020-10-16 02:35:07,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:35:07,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 02:35:07,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587183567] [2020-10-16 02:35:07,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 02:35:07,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:35:07,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 02:35:07,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 02:35:07,039 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 02:35:07,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 334 transitions, 6293 flow. Second operand 9 states. [2020-10-16 02:35:07,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:35:07,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 02:35:07,040 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:35:11,405 INFO L129 PetriNetUnfolder]: 11424/18676 cut-off events. [2020-10-16 02:35:11,406 INFO L130 PetriNetUnfolder]: For 244413/244413 co-relation queries the response was YES. [2020-10-16 02:35:11,753 INFO L80 FinitePrefix]: Finished finitePrefix Result has 121455 conditions, 18676 events. 11424/18676 cut-off events. For 244413/244413 co-relation queries the response was YES. Maximal size of possible extension queue 3435. Compared 178925 event pairs, 755 based on Foata normal form. 17/16201 useless extension candidates. Maximal degree in co-relation 121400. Up to 3281 conditions per place. [2020-10-16 02:35:11,848 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 241 selfloop transitions, 266 changer transitions 0/513 dead transitions. [2020-10-16 02:35:11,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 513 transitions, 8819 flow [2020-10-16 02:35:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:35:11,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:35:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 02:35:11,854 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 02:35:11,854 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 02:35:11,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 02:35:11,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:35:11,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 02:35:11,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:35:11,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:35:11,864 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:35:11,864 INFO L185 Difference]: Start difference. First operand has 172 places, 334 transitions, 6293 flow. Second operand 29 states and 3035 transitions. [2020-10-16 02:35:11,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 513 transitions, 8819 flow [2020-10-16 02:35:31,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 513 transitions, 8387 flow, removed 26 selfloop flow, removed 19 redundant places. [2020-10-16 02:35:32,007 INFO L241 Difference]: Finished difference. Result has 184 places, 353 transitions, 6857 flow [2020-10-16 02:35:32,008 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=5875, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6857, PETRI_PLACES=184, PETRI_TRANSITIONS=353} [2020-10-16 02:35:32,008 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 150 predicate places. [2020-10-16 02:35:32,008 INFO L481 AbstractCegarLoop]: Abstraction has has 184 places, 353 transitions, 6857 flow [2020-10-16 02:35:32,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 02:35:32,009 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:35:32,009 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:35:32,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-16 02:35:32,010 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 02:35:32,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:35:32,010 INFO L82 PathProgramCache]: Analyzing trace with hash -484255556, now seen corresponding path program 5 times [2020-10-16 02:35:32,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:35:32,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406959540] [2020-10-16 02:35:32,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:35:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:35:32,102 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 02:35:32,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406959540] [2020-10-16 02:35:32,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:35:32,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 02:35:32,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132572210] [2020-10-16 02:35:32,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 02:35:32,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:35:32,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 02:35:32,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 02:35:32,106 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 02:35:32,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 353 transitions, 6857 flow. Second operand 9 states. [2020-10-16 02:35:32,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:35:32,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 02:35:32,108 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:35:36,860 INFO L129 PetriNetUnfolder]: 11447/18739 cut-off events. [2020-10-16 02:35:36,861 INFO L130 PetriNetUnfolder]: For 263126/263126 co-relation queries the response was YES. [2020-10-16 02:35:37,284 INFO L80 FinitePrefix]: Finished finitePrefix Result has 125470 conditions, 18739 events. 11447/18739 cut-off events. For 263126/263126 co-relation queries the response was YES. Maximal size of possible extension queue 3459. Compared 179374 event pairs, 728 based on Foata normal form. 17/16251 useless extension candidates. Maximal degree in co-relation 125412. Up to 3291 conditions per place. [2020-10-16 02:35:37,398 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 247 selfloop transitions, 274 changer transitions 0/527 dead transitions. [2020-10-16 02:35:37,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 527 transitions, 9320 flow [2020-10-16 02:35:37,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:35:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:35:37,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 02:35:37,404 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 02:35:37,404 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 02:35:37,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 02:35:37,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:35:37,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 02:35:37,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:35:37,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:35:37,417 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:35:37,417 INFO L185 Difference]: Start difference. First operand has 184 places, 353 transitions, 6857 flow. Second operand 29 states and 3035 transitions. [2020-10-16 02:35:37,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 527 transitions, 9320 flow [2020-10-16 02:35:58,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 527 transitions, 8875 flow, removed 35 selfloop flow, removed 19 redundant places. [2020-10-16 02:35:58,391 INFO L241 Difference]: Finished difference. Result has 196 places, 374 transitions, 7438 flow [2020-10-16 02:35:58,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=6420, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7438, PETRI_PLACES=196, PETRI_TRANSITIONS=374} [2020-10-16 02:35:58,391 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 162 predicate places. [2020-10-16 02:35:58,392 INFO L481 AbstractCegarLoop]: Abstraction has has 196 places, 374 transitions, 7438 flow [2020-10-16 02:35:58,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 02:35:58,392 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:35:58,392 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:35:58,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 02:35:58,392 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 02:35:58,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:35:58,393 INFO L82 PathProgramCache]: Analyzing trace with hash -479612996, now seen corresponding path program 6 times [2020-10-16 02:35:58,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:35:58,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581239230] [2020-10-16 02:35:58,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:35:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:35:58,480 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 02:35:58,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581239230] [2020-10-16 02:35:58,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:35:58,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 02:35:58,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742852300] [2020-10-16 02:35:58,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 02:35:58,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:35:58,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 02:35:58,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 02:35:58,483 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 02:35:58,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 374 transitions, 7438 flow. Second operand 9 states. [2020-10-16 02:35:58,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:35:58,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 02:35:58,485 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:36:03,497 INFO L129 PetriNetUnfolder]: 11470/18802 cut-off events. [2020-10-16 02:36:03,497 INFO L130 PetriNetUnfolder]: For 284018/284018 co-relation queries the response was YES. [2020-10-16 02:36:03,884 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129504 conditions, 18802 events. 11470/18802 cut-off events. For 284018/284018 co-relation queries the response was YES. Maximal size of possible extension queue 3483. Compared 179760 event pairs, 731 based on Foata normal form. 17/16307 useless extension candidates. Maximal degree in co-relation 129443. Up to 3301 conditions per place. [2020-10-16 02:36:03,972 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 249 selfloop transitions, 279 changer transitions 0/534 dead transitions. [2020-10-16 02:36:03,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 534 transitions, 9710 flow [2020-10-16 02:36:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:36:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:36:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 02:36:03,976 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 02:36:03,976 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 02:36:03,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 02:36:03,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:36:03,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 02:36:03,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:36:03,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:36:03,985 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:36:03,985 INFO L185 Difference]: Start difference. First operand has 196 places, 374 transitions, 7438 flow. Second operand 29 states and 3035 transitions. [2020-10-16 02:36:03,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 534 transitions, 9710 flow [2020-10-16 02:36:21,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 534 transitions, 9255 flow, removed 27 selfloop flow, removed 20 redundant places. [2020-10-16 02:36:21,809 INFO L241 Difference]: Finished difference. Result has 207 places, 387 transitions, 7869 flow [2020-10-16 02:36:21,809 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=6989, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7869, PETRI_PLACES=207, PETRI_TRANSITIONS=387} [2020-10-16 02:36:21,809 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 173 predicate places. [2020-10-16 02:36:21,809 INFO L481 AbstractCegarLoop]: Abstraction has has 207 places, 387 transitions, 7869 flow [2020-10-16 02:36:21,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 02:36:21,810 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:36:21,810 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:36:21,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 02:36:21,810 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 02:36:21,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:36:21,811 INFO L82 PathProgramCache]: Analyzing trace with hash -612301355, now seen corresponding path program 1 times [2020-10-16 02:36:21,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:36:21,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47901094] [2020-10-16 02:36:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:36:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:36:21,819 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:36:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:36:21,826 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:36:21,833 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 02:36:21,833 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 02:36:21,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 02:36:21,834 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 02:36:21,834 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 02:36:21,835 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 02:36:21,847 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,847 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,847 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,847 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,848 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,848 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,848 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,848 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,848 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,848 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,848 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,849 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,849 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,849 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,849 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,849 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,849 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,850 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,850 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,850 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,850 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,850 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,850 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,850 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,851 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,851 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,851 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,851 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,851 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,851 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,852 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,852 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,852 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,852 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,852 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,852 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,853 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,853 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,853 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,854 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,854 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,854 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,854 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,854 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,854 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,854 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,855 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,855 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,855 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,855 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,855 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,856 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,856 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,856 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,856 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,856 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,856 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,856 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,856 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,860 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,860 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,860 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,861 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,861 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,867 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,867 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,867 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,867 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,867 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,874 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,875 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,875 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,875 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,875 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,878 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,878 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,879 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,879 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,879 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,882 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,882 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,883 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,883 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,883 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,885 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,886 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,886 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,892 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,892 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:36:21,893 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 02:36:21,893 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 02:36:21,893 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 02:36:21,893 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 02:36:21,893 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 02:36:21,893 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 02:36:21,893 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 02:36:21,894 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 02:36:21,894 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 02:36:21,895 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-10-16 02:36:21,904 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-16 02:36:21,904 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 02:36:21,905 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 02:36:21,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 122 transitions, 334 flow [2020-10-16 02:36:21,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 81 transitions, 210 flow [2020-10-16 02:36:21,906 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 02:36:21,906 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 210 flow [2020-10-16 02:36:21,906 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 81 transitions, 210 flow [2020-10-16 02:36:21,906 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 210 flow [2020-10-16 02:36:21,913 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-16 02:36:21,913 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 02:36:21,913 INFO L80 FinitePrefix]: Finished finitePrefix Result has 186 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 253 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 153. Up to 12 conditions per place. [2020-10-16 02:36:21,916 INFO L117 LiptonReduction]: Number of co-enabled transitions 2264 [2020-10-16 02:36:23,044 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-16 02:36:23,309 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 02:36:23,453 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 02:36:23,466 INFO L132 LiptonReduction]: Checked pairs total: 3488 [2020-10-16 02:36:23,466 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-16 02:36:23,466 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1560 [2020-10-16 02:36:23,467 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 02:36:23,467 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:36:23,468 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:36:23,468 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 02:36:23,468 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 02:36:23,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:36:23,468 INFO L82 PathProgramCache]: Analyzing trace with hash 921412, now seen corresponding path program 1 times [2020-10-16 02:36:23,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:36:23,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764248411] [2020-10-16 02:36:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:36:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:36:23,480 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 02:36:23,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764248411] [2020-10-16 02:36:23,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:36:23,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 02:36:23,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792572506] [2020-10-16 02:36:23,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 02:36:23,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:36:23,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 02:36:23,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 02:36:23,482 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 185 [2020-10-16 02:36:23,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states. [2020-10-16 02:36:23,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:36:23,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 185 [2020-10-16 02:36:23,483 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:36:24,134 INFO L129 PetriNetUnfolder]: 9406/12179 cut-off events. [2020-10-16 02:36:24,134 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 02:36:24,188 INFO L80 FinitePrefix]: Finished finitePrefix Result has 24375 conditions, 12179 events. 9406/12179 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 66749 event pairs, 1879 based on Foata normal form. 0/10226 useless extension candidates. Maximal degree in co-relation 24362. Up to 11075 conditions per place. [2020-10-16 02:36:24,224 INFO L132 encePairwiseOnDemand]: 178/185 looper letters, 22 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2020-10-16 02:36:24,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 180 flow [2020-10-16 02:36:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 02:36:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 02:36:24,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2020-10-16 02:36:24,225 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6738738738738739 [2020-10-16 02:36:24,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2020-10-16 02:36:24,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2020-10-16 02:36:24,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:36:24,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2020-10-16 02:36:24,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 02:36:24,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 02:36:24,226 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 02:36:24,226 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states and 374 transitions. [2020-10-16 02:36:24,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 180 flow [2020-10-16 02:36:24,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 159 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 02:36:24,227 INFO L241 Difference]: Finished difference. Result has 41 places, 30 transitions, 117 flow [2020-10-16 02:36:24,228 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2020-10-16 02:36:24,228 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2020-10-16 02:36:24,228 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 117 flow [2020-10-16 02:36:24,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 02:36:24,228 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:36:24,228 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:36:24,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 02:36:24,228 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 02:36:24,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:36:24,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1176697087, now seen corresponding path program 1 times [2020-10-16 02:36:24,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:36:24,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117137487] [2020-10-16 02:36:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:36:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:36:24,265 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 02:36:24,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117137487] [2020-10-16 02:36:24,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:36:24,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:36:24,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349408433] [2020-10-16 02:36:24,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:36:24,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:36:24,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:36:24,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:36:24,268 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2020-10-16 02:36:24,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 117 flow. Second operand 5 states. [2020-10-16 02:36:24,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:36:24,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2020-10-16 02:36:24,269 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:36:25,482 INFO L129 PetriNetUnfolder]: 15176/20092 cut-off events. [2020-10-16 02:36:25,483 INFO L130 PetriNetUnfolder]: For 1041/1041 co-relation queries the response was YES. [2020-10-16 02:36:25,557 INFO L80 FinitePrefix]: Finished finitePrefix Result has 49217 conditions, 20092 events. 15176/20092 cut-off events. For 1041/1041 co-relation queries the response was YES. Maximal size of possible extension queue 1755. Compared 126905 event pairs, 2315 based on Foata normal form. 323/18514 useless extension candidates. Maximal degree in co-relation 49202. Up to 9537 conditions per place. [2020-10-16 02:36:25,618 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 48 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2020-10-16 02:36:25,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 73 transitions, 363 flow [2020-10-16 02:36:25,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:36:25,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:36:25,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 737 transitions. [2020-10-16 02:36:25,620 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.663963963963964 [2020-10-16 02:36:25,620 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 737 transitions. [2020-10-16 02:36:25,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 737 transitions. [2020-10-16 02:36:25,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:36:25,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 737 transitions. [2020-10-16 02:36:25,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:36:25,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:36:25,623 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:36:25,623 INFO L185 Difference]: Start difference. First operand has 41 places, 30 transitions, 117 flow. Second operand 6 states and 737 transitions. [2020-10-16 02:36:25,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 73 transitions, 363 flow [2020-10-16 02:36:25,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 73 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 02:36:25,626 INFO L241 Difference]: Finished difference. Result has 48 places, 40 transitions, 216 flow [2020-10-16 02:36:25,626 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2020-10-16 02:36:25,626 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2020-10-16 02:36:25,626 INFO L481 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 216 flow [2020-10-16 02:36:25,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:36:25,627 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:36:25,627 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:36:25,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 02:36:25,627 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 02:36:25,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:36:25,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1772932976, now seen corresponding path program 1 times [2020-10-16 02:36:25,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:36:25,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406741294] [2020-10-16 02:36:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:36:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:36:25,659 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 02:36:25,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406741294] [2020-10-16 02:36:25,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:36:25,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:36:25,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516178378] [2020-10-16 02:36:25,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:36:25,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:36:25,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:36:25,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:36:25,662 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 185 [2020-10-16 02:36:25,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 216 flow. Second operand 5 states. [2020-10-16 02:36:25,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:36:25,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 185 [2020-10-16 02:36:25,663 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:36:27,815 INFO L129 PetriNetUnfolder]: 24103/32563 cut-off events. [2020-10-16 02:36:27,815 INFO L130 PetriNetUnfolder]: For 14291/14291 co-relation queries the response was YES. [2020-10-16 02:36:27,945 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97846 conditions, 32563 events. 24103/32563 cut-off events. For 14291/14291 co-relation queries the response was YES. Maximal size of possible extension queue 3152. Compared 228520 event pairs, 3971 based on Foata normal form. 497/29900 useless extension candidates. Maximal degree in co-relation 97827. Up to 16050 conditions per place. [2020-10-16 02:36:28,053 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 58 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2020-10-16 02:36:28,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 92 transitions, 609 flow [2020-10-16 02:36:28,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:36:28,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:36:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 744 transitions. [2020-10-16 02:36:28,054 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6702702702702703 [2020-10-16 02:36:28,054 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 744 transitions. [2020-10-16 02:36:28,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 744 transitions. [2020-10-16 02:36:28,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:36:28,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 744 transitions. [2020-10-16 02:36:28,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:36:28,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:36:28,056 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:36:28,056 INFO L185 Difference]: Start difference. First operand has 48 places, 40 transitions, 216 flow. Second operand 6 states and 744 transitions. [2020-10-16 02:36:28,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 92 transitions, 609 flow [2020-10-16 02:36:28,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 92 transitions, 568 flow, removed 8 selfloop flow, removed 2 redundant places. [2020-10-16 02:36:28,175 INFO L241 Difference]: Finished difference. Result has 54 places, 55 transitions, 378 flow [2020-10-16 02:36:28,175 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2020-10-16 02:36:28,175 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2020-10-16 02:36:28,175 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 378 flow [2020-10-16 02:36:28,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:36:28,175 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:36:28,176 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:36:28,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 02:36:28,176 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 02:36:28,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:36:28,176 INFO L82 PathProgramCache]: Analyzing trace with hash 323960811, now seen corresponding path program 1 times [2020-10-16 02:36:28,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:36:28,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890596401] [2020-10-16 02:36:28,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:36:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:36:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 02:36:28,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890596401] [2020-10-16 02:36:28,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081546826] [2020-10-16 02:36:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:36:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:36:28,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:36:28,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:36:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 02:36:28,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:36:28,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:36:28,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23524134] [2020-10-16 02:36:28,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:36:28,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:36:28,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:36:28,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:36:28,366 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 02:36:28,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 378 flow. Second operand 12 states. [2020-10-16 02:36:28,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:36:28,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 02:36:28,367 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:36:30,976 INFO L129 PetriNetUnfolder]: 25758/34987 cut-off events. [2020-10-16 02:36:30,976 INFO L130 PetriNetUnfolder]: For 32543/32543 co-relation queries the response was YES. [2020-10-16 02:36:31,158 INFO L80 FinitePrefix]: Finished finitePrefix Result has 121474 conditions, 34987 events. 25758/34987 cut-off events. For 32543/32543 co-relation queries the response was YES. Maximal size of possible extension queue 3461. Compared 251257 event pairs, 3572 based on Foata normal form. 107/31691 useless extension candidates. Maximal degree in co-relation 121452. Up to 12942 conditions per place. [2020-10-16 02:36:31,289 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 101 selfloop transitions, 47 changer transitions 0/156 dead transitions. [2020-10-16 02:36:31,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 156 transitions, 1066 flow [2020-10-16 02:36:31,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:36:31,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:36:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1574 transitions. [2020-10-16 02:36:31,291 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6544698544698545 [2020-10-16 02:36:31,292 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1574 transitions. [2020-10-16 02:36:31,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1574 transitions. [2020-10-16 02:36:31,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:36:31,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1574 transitions. [2020-10-16 02:36:31,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:36:31,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:36:31,295 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:36:31,296 INFO L185 Difference]: Start difference. First operand has 54 places, 55 transitions, 378 flow. Second operand 13 states and 1574 transitions. [2020-10-16 02:36:31,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 156 transitions, 1066 flow [2020-10-16 02:36:32,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 156 transitions, 1030 flow, removed 14 selfloop flow, removed 1 redundant places. [2020-10-16 02:36:32,365 INFO L241 Difference]: Finished difference. Result has 68 places, 71 transitions, 604 flow [2020-10-16 02:36:32,365 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=604, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2020-10-16 02:36:32,366 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2020-10-16 02:36:32,366 INFO L481 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 604 flow [2020-10-16 02:36:32,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:36:32,366 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:36:32,366 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:36:32,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:36:32,572 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 02:36:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:36:32,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1313409279, now seen corresponding path program 2 times [2020-10-16 02:36:32,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:36:32,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492011035] [2020-10-16 02:36:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:36:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:36:32,614 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 02:36:32,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492011035] [2020-10-16 02:36:32,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:36:32,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:36:32,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905941580] [2020-10-16 02:36:32,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:36:32,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:36:32,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:36:32,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:36:32,618 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 02:36:32,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 604 flow. Second operand 7 states. [2020-10-16 02:36:32,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:36:32,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 02:36:32,618 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:36:35,583 INFO L129 PetriNetUnfolder]: 27412/37431 cut-off events. [2020-10-16 02:36:35,583 INFO L130 PetriNetUnfolder]: For 60133/60133 co-relation queries the response was YES. [2020-10-16 02:36:35,813 INFO L80 FinitePrefix]: Finished finitePrefix Result has 145813 conditions, 37431 events. 27412/37431 cut-off events. For 60133/60133 co-relation queries the response was YES. Maximal size of possible extension queue 3770. Compared 274003 event pairs, 3717 based on Foata normal form. 107/33822 useless extension candidates. Maximal degree in co-relation 145787. Up to 11975 conditions per place. [2020-10-16 02:36:35,956 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 105 selfloop transitions, 54 changer transitions 0/167 dead transitions. [2020-10-16 02:36:35,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 167 transitions, 1319 flow [2020-10-16 02:36:35,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:36:35,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:36:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1574 transitions. [2020-10-16 02:36:35,958 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6544698544698545 [2020-10-16 02:36:35,959 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1574 transitions. [2020-10-16 02:36:35,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1574 transitions. [2020-10-16 02:36:35,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:36:35,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1574 transitions. [2020-10-16 02:36:35,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:36:35,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:36:35,963 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:36:35,963 INFO L185 Difference]: Start difference. First operand has 68 places, 71 transitions, 604 flow. Second operand 13 states and 1574 transitions. [2020-10-16 02:36:35,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 167 transitions, 1319 flow [2020-10-16 02:36:39,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 167 transitions, 1214 flow, removed 10 selfloop flow, removed 7 redundant places. [2020-10-16 02:36:39,978 INFO L241 Difference]: Finished difference. Result has 76 places, 83 transitions, 759 flow [2020-10-16 02:36:39,979 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=759, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2020-10-16 02:36:39,979 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 37 predicate places. [2020-10-16 02:36:39,979 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 759 flow [2020-10-16 02:36:39,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:36:39,979 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:36:39,979 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:36:39,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 02:36:39,979 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 02:36:39,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:36:39,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1064498480, now seen corresponding path program 1 times [2020-10-16 02:36:39,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:36:39,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619926254] [2020-10-16 02:36:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:36:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:36:40,016 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 02:36:40,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619926254] [2020-10-16 02:36:40,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:36:40,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:36:40,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209239122] [2020-10-16 02:36:40,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:36:40,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:36:40,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:36:40,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:36:40,018 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2020-10-16 02:36:40,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 759 flow. Second operand 5 states. [2020-10-16 02:36:40,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:36:40,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2020-10-16 02:36:40,019 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:36:44,895 INFO L129 PetriNetUnfolder]: 42399/59055 cut-off events. [2020-10-16 02:36:44,895 INFO L130 PetriNetUnfolder]: For 161057/161063 co-relation queries the response was YES. [2020-10-16 02:36:45,235 INFO L80 FinitePrefix]: Finished finitePrefix Result has 255881 conditions, 59055 events. 42399/59055 cut-off events. For 161057/161063 co-relation queries the response was YES. Maximal size of possible extension queue 6543. Compared 473185 event pairs, 6895 based on Foata normal form. 856/53802 useless extension candidates. Maximal degree in co-relation 255853. Up to 30189 conditions per place. [2020-10-16 02:36:45,453 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 121 selfloop transitions, 49 changer transitions 0/179 dead transitions. [2020-10-16 02:36:45,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 179 transitions, 1941 flow [2020-10-16 02:36:45,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:36:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:36:45,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2020-10-16 02:36:45,455 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2020-10-16 02:36:45,455 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2020-10-16 02:36:45,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2020-10-16 02:36:45,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:36:45,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2020-10-16 02:36:45,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:36:45,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:36:45,456 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:36:45,456 INFO L185 Difference]: Start difference. First operand has 76 places, 83 transitions, 759 flow. Second operand 6 states and 738 transitions. [2020-10-16 02:36:45,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 179 transitions, 1941 flow [2020-10-16 02:36:54,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 179 transitions, 1718 flow, removed 22 selfloop flow, removed 9 redundant places. [2020-10-16 02:36:54,185 INFO L241 Difference]: Finished difference. Result has 75 places, 115 transitions, 1155 flow [2020-10-16 02:36:54,185 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1155, PETRI_PLACES=75, PETRI_TRANSITIONS=115} [2020-10-16 02:36:54,185 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2020-10-16 02:36:54,185 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 115 transitions, 1155 flow [2020-10-16 02:36:54,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:36:54,185 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:36:54,185 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:36:54,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 02:36:54,186 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 02:36:54,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:36:54,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1896427507, now seen corresponding path program 1 times [2020-10-16 02:36:54,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:36:54,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211351460] [2020-10-16 02:36:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:36:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:36:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 02:36:54,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211351460] [2020-10-16 02:36:54,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901408024] [2020-10-16 02:36:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:36:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:36:54,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:36:54,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:36:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 02:36:54,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:36:54,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:36:54,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576189577] [2020-10-16 02:36:54,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:36:54,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:36:54,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:36:54,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:36:54,391 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2020-10-16 02:36:54,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 115 transitions, 1155 flow. Second operand 12 states. [2020-10-16 02:36:54,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:36:54,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2020-10-16 02:36:54,392 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:37:00,174 INFO L129 PetriNetUnfolder]: 45547/63826 cut-off events. [2020-10-16 02:37:00,174 INFO L130 PetriNetUnfolder]: For 212873/212879 co-relation queries the response was YES. [2020-10-16 02:37:00,609 INFO L80 FinitePrefix]: Finished finitePrefix Result has 294881 conditions, 63826 events. 45547/63826 cut-off events. For 212873/212879 co-relation queries the response was YES. Maximal size of possible extension queue 7232. Compared 522165 event pairs, 6275 based on Foata normal form. 233/57404 useless extension candidates. Maximal degree in co-relation 294850. Up to 20346 conditions per place. [2020-10-16 02:37:00,869 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 142 selfloop transitions, 97 changer transitions 0/247 dead transitions. [2020-10-16 02:37:00,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 247 transitions, 2533 flow [2020-10-16 02:37:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:37:00,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:37:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1563 transitions. [2020-10-16 02:37:00,871 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6498960498960499 [2020-10-16 02:37:00,871 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1563 transitions. [2020-10-16 02:37:00,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1563 transitions. [2020-10-16 02:37:00,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:37:00,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1563 transitions. [2020-10-16 02:37:00,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:37:00,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:37:00,873 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:37:00,874 INFO L185 Difference]: Start difference. First operand has 75 places, 115 transitions, 1155 flow. Second operand 13 states and 1563 transitions. [2020-10-16 02:37:00,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 247 transitions, 2533 flow [2020-10-16 02:37:20,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 247 transitions, 2444 flow, removed 38 selfloop flow, removed 1 redundant places. [2020-10-16 02:37:20,615 INFO L241 Difference]: Finished difference. Result has 89 places, 146 transitions, 1704 flow [2020-10-16 02:37:20,616 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1704, PETRI_PLACES=89, PETRI_TRANSITIONS=146} [2020-10-16 02:37:20,616 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2020-10-16 02:37:20,616 INFO L481 AbstractCegarLoop]: Abstraction has has 89 places, 146 transitions, 1704 flow [2020-10-16 02:37:20,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:37:20,616 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:37:20,616 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:37:20,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 02:37:20,817 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 02:37:20,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:37:20,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1954579539, now seen corresponding path program 1 times [2020-10-16 02:37:20,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:37:20,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761644072] [2020-10-16 02:37:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:37:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:37:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 02:37:20,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761644072] [2020-10-16 02:37:20,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401604572] [2020-10-16 02:37:20,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:37:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:37:20,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:37:20,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:37:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 02:37:21,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:37:21,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:37:21,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569994538] [2020-10-16 02:37:21,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:37:21,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:37:21,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:37:21,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:37:21,082 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 02:37:21,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 146 transitions, 1704 flow. Second operand 12 states. [2020-10-16 02:37:21,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:37:21,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 02:37:21,084 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:37:31,682 INFO L129 PetriNetUnfolder]: 48388/68199 cut-off events. [2020-10-16 02:37:31,682 INFO L130 PetriNetUnfolder]: For 314101/314101 co-relation queries the response was YES. [2020-10-16 02:37:32,092 INFO L80 FinitePrefix]: Finished finitePrefix Result has 338405 conditions, 68199 events. 48388/68199 cut-off events. For 314101/314101 co-relation queries the response was YES. Maximal size of possible extension queue 7871. Compared 568376 event pairs, 6048 based on Foata normal form. 227/61266 useless extension candidates. Maximal degree in co-relation 338370. Up to 18936 conditions per place. [2020-10-16 02:37:32,340 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 168 selfloop transitions, 110 changer transitions 0/286 dead transitions. [2020-10-16 02:37:32,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 286 transitions, 3342 flow [2020-10-16 02:37:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:37:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:37:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1577 transitions. [2020-10-16 02:37:32,342 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6557172557172557 [2020-10-16 02:37:32,342 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1577 transitions. [2020-10-16 02:37:32,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1577 transitions. [2020-10-16 02:37:32,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:37:32,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1577 transitions. [2020-10-16 02:37:32,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:37:32,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:37:32,345 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:37:32,345 INFO L185 Difference]: Start difference. First operand has 89 places, 146 transitions, 1704 flow. Second operand 13 states and 1577 transitions. [2020-10-16 02:37:32,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 286 transitions, 3342 flow [2020-10-16 02:38:05,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 286 transitions, 3227 flow, removed 36 selfloop flow, removed 3 redundant places. [2020-10-16 02:38:05,861 INFO L241 Difference]: Finished difference. Result has 101 places, 181 transitions, 2342 flow [2020-10-16 02:38:05,861 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2342, PETRI_PLACES=101, PETRI_TRANSITIONS=181} [2020-10-16 02:38:05,862 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2020-10-16 02:38:05,862 INFO L481 AbstractCegarLoop]: Abstraction has has 101 places, 181 transitions, 2342 flow [2020-10-16 02:38:05,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:38:05,862 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:38:05,862 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:38:06,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 02:38:06,076 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 02:38:06,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:38:06,076 INFO L82 PathProgramCache]: Analyzing trace with hash 780837277, now seen corresponding path program 2 times [2020-10-16 02:38:06,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:38:06,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438697022] [2020-10-16 02:38:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:38:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:38:06,119 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 02:38:06,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438697022] [2020-10-16 02:38:06,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:38:06,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:38:06,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526985518] [2020-10-16 02:38:06,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:38:06,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:38:06,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:38:06,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:38:06,122 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 02:38:06,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 181 transitions, 2342 flow. Second operand 7 states. [2020-10-16 02:38:06,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:38:06,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 02:38:06,123 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:38:14,809 INFO L129 PetriNetUnfolder]: 50681/71686 cut-off events. [2020-10-16 02:38:14,809 INFO L130 PetriNetUnfolder]: For 413774/413774 co-relation queries the response was YES. [2020-10-16 02:38:15,321 INFO L80 FinitePrefix]: Finished finitePrefix Result has 383881 conditions, 71686 events. 50681/71686 cut-off events. For 413774/413774 co-relation queries the response was YES. Maximal size of possible extension queue 8401. Compared 605472 event pairs, 6363 based on Foata normal form. 175/64277 useless extension candidates. Maximal degree in co-relation 383843. Up to 19386 conditions per place. [2020-10-16 02:38:15,603 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 177 selfloop transitions, 124 changer transitions 0/309 dead transitions. [2020-10-16 02:38:15,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 309 transitions, 3914 flow [2020-10-16 02:38:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:38:15,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:38:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1577 transitions. [2020-10-16 02:38:15,605 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6557172557172557 [2020-10-16 02:38:15,605 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1577 transitions. [2020-10-16 02:38:15,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1577 transitions. [2020-10-16 02:38:15,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:38:15,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1577 transitions. [2020-10-16 02:38:15,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:38:15,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:38:15,608 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:38:15,608 INFO L185 Difference]: Start difference. First operand has 101 places, 181 transitions, 2342 flow. Second operand 13 states and 1577 transitions. [2020-10-16 02:38:15,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 309 transitions, 3914 flow [2020-10-16 02:39:07,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 309 transitions, 3850 flow, removed 29 selfloop flow, removed 1 redundant places. [2020-10-16 02:39:07,258 INFO L241 Difference]: Finished difference. Result has 115 places, 204 transitions, 2919 flow [2020-10-16 02:39:07,258 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2919, PETRI_PLACES=115, PETRI_TRANSITIONS=204} [2020-10-16 02:39:07,258 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2020-10-16 02:39:07,258 INFO L481 AbstractCegarLoop]: Abstraction has has 115 places, 204 transitions, 2919 flow [2020-10-16 02:39:07,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:39:07,258 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:39:07,259 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:39:07,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 02:39:07,259 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 02:39:07,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:39:07,259 INFO L82 PathProgramCache]: Analyzing trace with hash 780840129, now seen corresponding path program 2 times [2020-10-16 02:39:07,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:39:07,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070899584] [2020-10-16 02:39:07,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:39:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:39:07,310 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 02:39:07,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070899584] [2020-10-16 02:39:07,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:39:07,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:39:07,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280137581] [2020-10-16 02:39:07,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:39:07,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:39:07,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:39:07,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:39:07,312 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2020-10-16 02:39:07,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 204 transitions, 2919 flow. Second operand 7 states. [2020-10-16 02:39:07,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:39:07,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2020-10-16 02:39:07,313 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:39:18,012 INFO L129 PetriNetUnfolder]: 53510/76037 cut-off events. [2020-10-16 02:39:18,012 INFO L130 PetriNetUnfolder]: For 545023/545029 co-relation queries the response was YES. [2020-10-16 02:39:18,555 INFO L80 FinitePrefix]: Finished finitePrefix Result has 435060 conditions, 76037 events. 53510/76037 cut-off events. For 545023/545029 co-relation queries the response was YES. Maximal size of possible extension queue 9094. Compared 651679 event pairs, 6771 based on Foata normal form. 233/68117 useless extension candidates. Maximal degree in co-relation 435018. Up to 20686 conditions per place. [2020-10-16 02:39:18,847 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 183 selfloop transitions, 140 changer transitions 0/331 dead transitions. [2020-10-16 02:39:18,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 331 transitions, 4669 flow [2020-10-16 02:39:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:39:18,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:39:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1563 transitions. [2020-10-16 02:39:18,849 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6498960498960499 [2020-10-16 02:39:18,849 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1563 transitions. [2020-10-16 02:39:18,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1563 transitions. [2020-10-16 02:39:18,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:39:18,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1563 transitions. [2020-10-16 02:39:18,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:39:18,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:39:18,851 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:39:18,851 INFO L185 Difference]: Start difference. First operand has 115 places, 204 transitions, 2919 flow. Second operand 13 states and 1563 transitions. [2020-10-16 02:39:18,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 331 transitions, 4669 flow [2020-10-16 02:40:25,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 331 transitions, 4363 flow, removed 41 selfloop flow, removed 8 redundant places. [2020-10-16 02:40:25,154 INFO L241 Difference]: Finished difference. Result has 122 places, 233 transitions, 3462 flow [2020-10-16 02:40:25,154 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3462, PETRI_PLACES=122, PETRI_TRANSITIONS=233} [2020-10-16 02:40:25,155 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2020-10-16 02:40:25,155 INFO L481 AbstractCegarLoop]: Abstraction has has 122 places, 233 transitions, 3462 flow [2020-10-16 02:40:25,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:40:25,155 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:40:25,155 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:40:25,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 02:40:25,155 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 02:40:25,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:40:25,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1561506739, now seen corresponding path program 1 times [2020-10-16 02:40:25,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:40:25,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237905565] [2020-10-16 02:40:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:40:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:40:25,190 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 02:40:25,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237905565] [2020-10-16 02:40:25,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:40:25,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:40:25,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052362403] [2020-10-16 02:40:25,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:40:25,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:40:25,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:40:25,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:40:25,192 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2020-10-16 02:40:25,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 233 transitions, 3462 flow. Second operand 5 states. [2020-10-16 02:40:25,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:40:25,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2020-10-16 02:40:25,193 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:40:46,836 INFO L129 PetriNetUnfolder]: 80365/116510 cut-off events. [2020-10-16 02:40:46,837 INFO L130 PetriNetUnfolder]: For 1107269/1107308 co-relation queries the response was YES. [2020-10-16 02:40:47,778 INFO L80 FinitePrefix]: Finished finitePrefix Result has 706460 conditions, 116510 events. 80365/116510 cut-off events. For 1107269/1107308 co-relation queries the response was YES. Maximal size of possible extension queue 14934. Compared 1084593 event pairs, 12119 based on Foata normal form. 1656/105260 useless extension candidates. Maximal degree in co-relation 706415. Up to 62044 conditions per place. [2020-10-16 02:40:48,241 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 370 selfloop transitions, 106 changer transitions 0/485 dead transitions. [2020-10-16 02:40:48,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 485 transitions, 8217 flow [2020-10-16 02:40:48,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:40:48,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:40:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2020-10-16 02:40:48,243 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2020-10-16 02:40:48,243 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2020-10-16 02:40:48,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2020-10-16 02:40:48,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:40:48,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2020-10-16 02:40:48,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:40:48,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:40:48,244 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:40:48,245 INFO L185 Difference]: Start difference. First operand has 122 places, 233 transitions, 3462 flow. Second operand 6 states and 738 transitions. [2020-10-16 02:40:48,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 485 transitions, 8217 flow [2020-10-16 02:44:22,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 485 transitions, 7867 flow, removed 60 selfloop flow, removed 7 redundant places. [2020-10-16 02:44:22,771 INFO L241 Difference]: Finished difference. Result has 123 places, 310 transitions, 5004 flow [2020-10-16 02:44:22,771 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3281, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5004, PETRI_PLACES=123, PETRI_TRANSITIONS=310} [2020-10-16 02:44:22,771 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 84 predicate places. [2020-10-16 02:44:22,771 INFO L481 AbstractCegarLoop]: Abstraction has has 123 places, 310 transitions, 5004 flow [2020-10-16 02:44:22,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:44:22,772 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:44:22,772 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:44:22,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-16 02:44:22,772 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 02:44:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:44:22,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1022812594, now seen corresponding path program 1 times [2020-10-16 02:44:22,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:44:22,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546640913] [2020-10-16 02:44:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:44:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:44:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 02:44:22,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546640913] [2020-10-16 02:44:22,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93432940] [2020-10-16 02:44:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:44:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:44:22,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 02:44:22,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:44:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 02:44:23,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:44:23,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 02:44:23,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500303823] [2020-10-16 02:44:23,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 02:44:23,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:44:23,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 02:44:23,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 02:44:23,036 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 185 [2020-10-16 02:44:23,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 310 transitions, 5004 flow. Second operand 16 states. [2020-10-16 02:44:23,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:44:23,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 185 [2020-10-16 02:44:23,037 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:44:40,563 INFO L129 PetriNetUnfolder]: 80442/116626 cut-off events. [2020-10-16 02:44:40,563 INFO L130 PetriNetUnfolder]: For 1194118/1194118 co-relation queries the response was YES. [2020-10-16 02:44:41,583 INFO L80 FinitePrefix]: Finished finitePrefix Result has 745109 conditions, 116626 events. 80442/116626 cut-off events. For 1194118/1194118 co-relation queries the response was YES. Maximal size of possible extension queue 15075. Compared 1099618 event pairs, 9598 based on Foata normal form. 57/103793 useless extension candidates. Maximal degree in co-relation 745061. Up to 31549 conditions per place. [2020-10-16 02:44:42,060 INFO L132 encePairwiseOnDemand]: 175/185 looper letters, 272 selfloop transitions, 297 changer transitions 0/576 dead transitions. [2020-10-16 02:44:42,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 576 transitions, 8806 flow [2020-10-16 02:44:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:44:42,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:44:42,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3418 transitions. [2020-10-16 02:44:42,064 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6370922646784716 [2020-10-16 02:44:42,064 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3418 transitions. [2020-10-16 02:44:42,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3418 transitions. [2020-10-16 02:44:42,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:44:42,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3418 transitions. [2020-10-16 02:44:42,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:44:42,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:44:42,071 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:44:42,071 INFO L185 Difference]: Start difference. First operand has 123 places, 310 transitions, 5004 flow. Second operand 29 states and 3418 transitions. [2020-10-16 02:44:42,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 576 transitions, 8806 flow Received shutdown request... [2020-10-16 02:46:55,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:46:55,442 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 02:46:55,446 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 02:46:55,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:46:55 BasicIcfg [2020-10-16 02:46:55,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 02:46:55,447 INFO L168 Benchmark]: Toolchain (without parser) took 823554.20 ms. Allocated memory was 251.7 MB in the beginning and 5.0 GB in the end (delta: 4.7 GB). Free memory was 207.0 MB in the beginning and 3.2 GB in the end (delta: -3.0 GB). Peak memory consumption was 6.4 GB. Max. memory is 14.2 GB. [2020-10-16 02:46:55,448 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 02:46:55,448 INFO L168 Benchmark]: CACSL2BoogieTranslator took 897.86 ms. Allocated memory was 251.7 MB in the beginning and 315.6 MB in the end (delta: 64.0 MB). Free memory was 207.0 MB in the beginning and 270.9 MB in the end (delta: -63.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 14.2 GB. [2020-10-16 02:46:55,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.25 ms. Allocated memory is still 315.6 MB. Free memory is still 270.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 02:46:55,449 INFO L168 Benchmark]: Boogie Preprocessor took 36.40 ms. Allocated memory is still 315.6 MB. Free memory was 270.9 MB in the beginning and 268.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 02:46:55,449 INFO L168 Benchmark]: RCFGBuilder took 517.58 ms. Allocated memory is still 315.6 MB. Free memory was 268.4 MB in the beginning and 246.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-16 02:46:55,449 INFO L168 Benchmark]: TraceAbstraction took 822034.95 ms. Allocated memory was 315.6 MB in the beginning and 5.0 GB in the end (delta: 4.6 GB). Free memory was 246.5 MB in the beginning and 3.2 GB in the end (delta: -3.0 GB). Peak memory consumption was 6.4 GB. Max. memory is 14.2 GB. [2020-10-16 02:46:55,452 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 897.86 ms. Allocated memory was 251.7 MB in the beginning and 315.6 MB in the end (delta: 64.0 MB). Free memory was 207.0 MB in the beginning and 270.9 MB in the end (delta: -63.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 59.25 ms. Allocated memory is still 315.6 MB. Free memory is still 270.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 36.40 ms. Allocated memory is still 315.6 MB. Free memory was 270.9 MB in the beginning and 268.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 517.58 ms. Allocated memory is still 315.6 MB. Free memory was 268.4 MB in the beginning and 246.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 822034.95 ms. Allocated memory was 315.6 MB in the beginning and 5.0 GB in the end (delta: 4.6 GB). Free memory was 246.5 MB in the beginning and 3.2 GB in the end (delta: -3.0 GB). Peak memory consumption was 6.4 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 363 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 3 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 60 PlacesBefore, 17 PlacesAfterwards, 57 TransitionsBefore, 11 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 54 TotalNumberOfCompositions, 576 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 568 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 32 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 68 PlacesBefore, 24 PlacesAfterwards, 63 TransitionsBefore, 16 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 57 TotalNumberOfCompositions, 1184 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 808 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 16 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 49 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 76 PlacesBefore, 29 PlacesAfterwards, 69 TransitionsBefore, 19 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 57 TotalNumberOfCompositions, 1815 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 987 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 84 PlacesBefore, 34 PlacesAfterwards, 75 TransitionsBefore, 22 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 64 TotalNumberOfCompositions, 2872 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1265 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 83 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 92 PlacesBefore, 39 PlacesAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 63 TotalNumberOfCompositions, 3488 MoverChecksTotal - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 5 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 821.7s, OverallIterations: 44, TraceHistogramMax: 5, AutomataDifference: 806.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.8s, HoareTripleCheckerStatistics: 447 SDtfs, 3456 SDslu, 587 SDs, 0 SdLazy, 6746 SolverSat, 455 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 609 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 513 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2454 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7869occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 771 NumberOfCodeBlocks, 771 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 663 ConstructedInterpolants, 0 QuantifiedInterpolants, 62523 SizeOfPredicates, 40 NumberOfNonLiveVariables, 910 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 49 InterpolantComputations, 31 PerfectInterpolantSequences, 224/254 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