/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:53:33,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:53:33,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:53:33,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:53:33,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:53:33,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:53:33,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:53:33,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:53:33,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:53:33,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:53:33,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:53:33,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:53:33,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:53:33,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:53:33,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:53:33,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:53:33,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:53:33,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:53:33,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:53:33,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:53:33,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:53:33,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:53:33,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:53:33,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:53:33,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 22:53:33,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:53:33,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:53:33,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:53:33,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:53:33,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:53:33,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:53:33,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:53:33,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:53:33,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:53:33,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:53:33,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:53:33,412 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-05 22:53:33,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:53:33,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:53:33,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:53:33,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:53:33,468 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:53:33,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:53:33,469 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:53:33,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:53:33,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:53:33,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:53:33,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:53:33,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:53:33,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:53:33,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:53:33,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:53:33,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:53:33,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:53:33,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:53:33,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:53:33,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:53:33,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:53:33,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:53:33,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:53:33,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:53:33,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:53:33,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:53:33,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:53:33,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:53:33,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:53:33,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:53:33,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:53:33,809 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:53:33,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:53:33,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:53:33,816 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:53:33,817 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-10-05 22:53:33,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa94d89a5/1ec6a9db81da46f1b1ae17470b4697c3/FLAG3b6a8b50e [2020-10-05 22:53:34,435 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:53:34,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-10-05 22:53:34,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa94d89a5/1ec6a9db81da46f1b1ae17470b4697c3/FLAG3b6a8b50e [2020-10-05 22:53:34,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa94d89a5/1ec6a9db81da46f1b1ae17470b4697c3 [2020-10-05 22:53:34,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:53:34,723 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:53:34,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:53:34,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:53:34,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:53:34,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:53:34" (1/1) ... [2020-10-05 22:53:34,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f18bf99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:53:34, skipping insertion in model container [2020-10-05 22:53:34,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:53:34" (1/1) ... [2020-10-05 22:53:34,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:53:34,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:53:35,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:53:35,202 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:53:35,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:53:35,435 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:53:35,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:53:35 WrapperNode [2020-10-05 22:53:35,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:53:35,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:53:35,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:53:35,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:53:35,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:53:35" (1/1) ... [2020-10-05 22:53:35,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:53:35" (1/1) ... [2020-10-05 22:53:35,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:53:35,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:53:35,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:53:35,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:53:35,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:53:35" (1/1) ... [2020-10-05 22:53:35,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:53:35" (1/1) ... [2020-10-05 22:53:35,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:53:35" (1/1) ... [2020-10-05 22:53:35,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:53:35" (1/1) ... [2020-10-05 22:53:35,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:53:35" (1/1) ... [2020-10-05 22:53:35,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:53:35" (1/1) ... [2020-10-05 22:53:35,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:53:35" (1/1) ... [2020-10-05 22:53:35,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:53:35,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:53:35,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:53:35,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:53:35,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:53:35" (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 [2020-10-05 22:53:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:53:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:53:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:53:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:53:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:53:35,605 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:53:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:53:35,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:53:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 22:53:35,607 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 22:53:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-05 22:53:35,607 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-05 22:53:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:53:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:53:35,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:53:35,610 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:53:36,046 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:53:36,046 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:53:36,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:53:36 BoogieIcfgContainer [2020-10-05 22:53:36,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:53:36,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:53:36,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:53:36,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:53:36,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:53:34" (1/3) ... [2020-10-05 22:53:36,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276c3d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:53:36, skipping insertion in model container [2020-10-05 22:53:36,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:53:35" (2/3) ... [2020-10-05 22:53:36,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276c3d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:53:36, skipping insertion in model container [2020-10-05 22:53:36,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:53:36" (3/3) ... [2020-10-05 22:53:36,058 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-10-05 22:53:36,069 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:53:36,069 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:53:36,078 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:53:36,079 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:53:36,111 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,112 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,112 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,114 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,114 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,114 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,114 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,116 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,116 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,116 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,116 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,117 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,117 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,118 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,118 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,118 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,118 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,119 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,121 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,125 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,125 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,126 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,126 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,133 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,133 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,133 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,134 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,140 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,141 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,143 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,143 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,144 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,144 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:53:36,159 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-05 22:53:36,177 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:53:36,178 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:53:36,178 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:53:36,178 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:53:36,178 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:53:36,178 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:53:36,179 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:53:36,179 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:53:36,195 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-10-05 22:53:36,197 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-05 22:53:36,252 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-05 22:53:36,252 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:53:36,259 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-10-05 22:53:36,263 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-05 22:53:36,290 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-05 22:53:36,290 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:53:36,291 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-10-05 22:53:36,294 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-10-05 22:53:36,296 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:53:38,011 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-05 22:53:38,075 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-10-05 22:53:38,075 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-10-05 22:53:38,079 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-10-05 22:53:38,188 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-10-05 22:53:38,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-10-05 22:53:38,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:53:38,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:53:38,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:53:38,203 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:53:38,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:53:38,209 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-10-05 22:53:38,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:53:38,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315425130] [2020-10-05 22:53:38,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:53:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:53:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:53:38,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315425130] [2020-10-05 22:53:38,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:53:38,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:53:38,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774544707] [2020-10-05 22:53:38,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-05 22:53:38,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:53:38,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-05 22:53:38,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 22:53:38,449 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-10-05 22:53:38,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:53:38,508 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-10-05 22:53:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-05 22:53:38,509 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-05 22:53:38,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:53:38,546 INFO L225 Difference]: With dead ends: 1450 [2020-10-05 22:53:38,546 INFO L226 Difference]: Without dead ends: 1194 [2020-10-05 22:53:38,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 22:53:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-10-05 22:53:38,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-10-05 22:53:38,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-10-05 22:53:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-10-05 22:53:38,700 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-10-05 22:53:38,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:53:38,701 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-10-05 22:53:38,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-05 22:53:38,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-10-05 22:53:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:53:38,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:53:38,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:53:38,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:53:38,705 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:53:38,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:53:38,706 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-10-05 22:53:38,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:53:38,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513968812] [2020-10-05 22:53:38,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:53:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:53:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:53:38,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513968812] [2020-10-05 22:53:38,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:53:38,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:53:38,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778783129] [2020-10-05 22:53:38,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:53:38,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:53:38,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:53:38,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:53:38,833 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-10-05 22:53:38,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:53:38,874 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-10-05 22:53:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:53:38,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-05 22:53:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:53:38,885 INFO L225 Difference]: With dead ends: 1322 [2020-10-05 22:53:38,885 INFO L226 Difference]: Without dead ends: 1066 [2020-10-05 22:53:38,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:53:38,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-10-05 22:53:38,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-10-05 22:53:38,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-05 22:53:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-10-05 22:53:38,930 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-10-05 22:53:38,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:53:38,930 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-10-05 22:53:38,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:53:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-10-05 22:53:38,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:53:38,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:53:38,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:53:38,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:53:38,934 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:53:38,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:53:38,934 INFO L82 PathProgramCache]: Analyzing trace with hash -426404145, now seen corresponding path program 1 times [2020-10-05 22:53:38,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:53:38,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077710187] [2020-10-05 22:53:38,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:53:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:53:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:53:39,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077710187] [2020-10-05 22:53:39,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:53:39,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:53:39,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254395917] [2020-10-05 22:53:39,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:53:39,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:53:39,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:53:39,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:53:39,026 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-10-05 22:53:39,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:53:39,059 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-10-05 22:53:39,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:53:39,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-05 22:53:39,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:53:39,068 INFO L225 Difference]: With dead ends: 1162 [2020-10-05 22:53:39,068 INFO L226 Difference]: Without dead ends: 970 [2020-10-05 22:53:39,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:53:39,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-05 22:53:39,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-10-05 22:53:39,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-05 22:53:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-10-05 22:53:39,105 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-10-05 22:53:39,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:53:39,106 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-10-05 22:53:39,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:53:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-10-05 22:53:39,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:53:39,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:53:39,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:53:39,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:53:39,109 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:53:39,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:53:39,110 INFO L82 PathProgramCache]: Analyzing trace with hash 847962781, now seen corresponding path program 1 times [2020-10-05 22:53:39,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:53:39,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504580750] [2020-10-05 22:53:39,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:53:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:53:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:53:39,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504580750] [2020-10-05 22:53:39,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:53:39,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:53:39,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216753009] [2020-10-05 22:53:39,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:53:39,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:53:39,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:53:39,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:53:39,179 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-10-05 22:53:39,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:53:39,211 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-10-05 22:53:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:53:39,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-05 22:53:39,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:53:39,219 INFO L225 Difference]: With dead ends: 1042 [2020-10-05 22:53:39,219 INFO L226 Difference]: Without dead ends: 898 [2020-10-05 22:53:39,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:53:39,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-10-05 22:53:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-10-05 22:53:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-10-05 22:53:39,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-10-05 22:53:39,252 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-10-05 22:53:39,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:53:39,252 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-10-05 22:53:39,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:53:39,252 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-10-05 22:53:39,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:53:39,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:53:39,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:53:39,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:53:39,255 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:53:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:53:39,255 INFO L82 PathProgramCache]: Analyzing trace with hash 517017440, now seen corresponding path program 1 times [2020-10-05 22:53:39,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:53:39,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034972950] [2020-10-05 22:53:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:53:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:53:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:53:39,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034972950] [2020-10-05 22:53:39,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:53:39,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:53:39,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330736533] [2020-10-05 22:53:39,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:53:39,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:53:39,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:53:39,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:53:39,338 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 4 states. [2020-10-05 22:53:39,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:53:39,367 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-10-05 22:53:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:53:39,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-05 22:53:39,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:53:39,375 INFO L225 Difference]: With dead ends: 952 [2020-10-05 22:53:39,376 INFO L226 Difference]: Without dead ends: 844 [2020-10-05 22:53:39,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:53:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-05 22:53:39,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-10-05 22:53:39,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-05 22:53:39,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-10-05 22:53:39,406 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-10-05 22:53:39,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:53:39,406 INFO L479 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-10-05 22:53:39,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:53:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-10-05 22:53:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 22:53:39,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:53:39,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:53:39,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:53:39,410 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:53:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:53:39,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-10-05 22:53:39,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:53:39,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698008577] [2020-10-05 22:53:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:53:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:53:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:53:39,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698008577] [2020-10-05 22:53:39,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:53:39,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:53:39,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832314871] [2020-10-05 22:53:39,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:53:39,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:53:39,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:53:39,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:53:39,471 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 5 states. [2020-10-05 22:53:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:53:39,535 INFO L93 Difference]: Finished difference Result 1063 states and 3587 transitions. [2020-10-05 22:53:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:53:39,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-05 22:53:39,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:53:39,540 INFO L225 Difference]: With dead ends: 1063 [2020-10-05 22:53:39,540 INFO L226 Difference]: Without dead ends: 472 [2020-10-05 22:53:39,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-05 22:53:39,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-05 22:53:39,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-10-05 22:53:39,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-10-05 22:53:39,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-10-05 22:53:39,559 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-10-05 22:53:39,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:53:39,559 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-10-05 22:53:39,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:53:39,560 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-10-05 22:53:39,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-05 22:53:39,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:53:39,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:53:39,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:53:39,562 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:53:39,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:53:39,562 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 1 times [2020-10-05 22:53:39,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:53:39,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707595242] [2020-10-05 22:53:39,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:53:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:53:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:53:39,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707595242] [2020-10-05 22:53:39,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:53:39,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:53:39,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842701280] [2020-10-05 22:53:39,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:53:39,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:53:39,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:53:39,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:53:39,619 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 5 states. [2020-10-05 22:53:39,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:53:39,665 INFO L93 Difference]: Finished difference Result 634 states and 1979 transitions. [2020-10-05 22:53:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:53:39,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-05 22:53:39,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:53:39,668 INFO L225 Difference]: With dead ends: 634 [2020-10-05 22:53:39,668 INFO L226 Difference]: Without dead ends: 292 [2020-10-05 22:53:39,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-05 22:53:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-05 22:53:39,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2020-10-05 22:53:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-05 22:53:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 846 transitions. [2020-10-05 22:53:39,679 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 846 transitions. Word has length 16 [2020-10-05 22:53:39,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:53:39,679 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 846 transitions. [2020-10-05 22:53:39,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:53:39,679 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 846 transitions. [2020-10-05 22:53:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:53:39,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:53:39,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:53:39,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 22:53:39,681 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:53:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:53:39,682 INFO L82 PathProgramCache]: Analyzing trace with hash -670734284, now seen corresponding path program 1 times [2020-10-05 22:53:39,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:53:39,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139494605] [2020-10-05 22:53:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:53:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:53:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:53:39,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139494605] [2020-10-05 22:53:39,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:53:39,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:53:39,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612956241] [2020-10-05 22:53:39,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:53:39,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:53:39,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:53:39,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:53:39,734 INFO L87 Difference]: Start difference. First operand 292 states and 846 transitions. Second operand 5 states. [2020-10-05 22:53:39,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:53:39,777 INFO L93 Difference]: Finished difference Result 352 states and 1006 transitions. [2020-10-05 22:53:39,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:53:39,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-05 22:53:39,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:53:39,779 INFO L225 Difference]: With dead ends: 352 [2020-10-05 22:53:39,779 INFO L226 Difference]: Without dead ends: 154 [2020-10-05 22:53:39,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-05 22:53:39,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-05 22:53:39,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-05 22:53:39,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-05 22:53:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-10-05 22:53:39,785 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-10-05 22:53:39,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:53:39,786 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-10-05 22:53:39,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:53:39,786 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-10-05 22:53:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 22:53:39,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:53:39,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:53:39,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 22:53:39,787 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:53:39,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:53:39,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 1 times [2020-10-05 22:53:39,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:53:39,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487503304] [2020-10-05 22:53:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:53:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:53:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:53:39,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487503304] [2020-10-05 22:53:39,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:53:39,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:53:39,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788354151] [2020-10-05 22:53:39,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:53:39,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:53:39,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:53:39,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:53:39,846 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-10-05 22:53:39,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:53:39,882 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-10-05 22:53:39,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:53:39,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-05 22:53:39,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:53:39,883 INFO L225 Difference]: With dead ends: 130 [2020-10-05 22:53:39,883 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:53:39,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-05 22:53:39,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:53:39,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:53:39,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:53:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:53:39,885 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-05 22:53:39,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:53:39,885 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:53:39,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:53:39,885 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:53:39,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:53:39,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 22:53:39,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:53:39 BasicIcfg [2020-10-05 22:53:39,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:53:39,892 INFO L168 Benchmark]: Toolchain (without parser) took 5169.08 ms. Allocated memory was 141.0 MB in the beginning and 287.3 MB in the end (delta: 146.3 MB). Free memory was 103.1 MB in the beginning and 140.7 MB in the end (delta: -37.6 MB). Peak memory consumption was 108.7 MB. Max. memory is 7.1 GB. [2020-10-05 22:53:39,893 INFO L168 Benchmark]: CDTParser took 1.34 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 22:53:39,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.96 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 163.1 MB in the end (delta: -60.3 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-10-05 22:53:39,894 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.09 ms. Allocated memory is still 205.0 MB. Free memory was 163.1 MB in the beginning and 161.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:53:39,895 INFO L168 Benchmark]: Boogie Preprocessor took 30.51 ms. Allocated memory is still 205.0 MB. Free memory was 161.1 MB in the beginning and 159.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:53:39,896 INFO L168 Benchmark]: RCFGBuilder took 527.51 ms. Allocated memory is still 205.0 MB. Free memory was 159.1 MB in the beginning and 134.4 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-10-05 22:53:39,897 INFO L168 Benchmark]: TraceAbstraction took 3839.35 ms. Allocated memory was 205.0 MB in the beginning and 287.3 MB in the end (delta: 82.3 MB). Free memory was 134.4 MB in the beginning and 140.7 MB in the end (delta: -6.3 MB). Peak memory consumption was 76.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:53:39,901 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.96 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 163.1 MB in the end (delta: -60.3 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.09 ms. Allocated memory is still 205.0 MB. Free memory was 163.1 MB in the beginning and 161.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.51 ms. Allocated memory is still 205.0 MB. Free memory was 161.1 MB in the beginning and 159.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 527.51 ms. Allocated memory is still 205.0 MB. Free memory was 159.1 MB in the beginning and 134.4 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3839.35 ms. Allocated memory was 205.0 MB in the beginning and 287.3 MB in the end (delta: 82.3 MB). Free memory was 134.4 MB in the beginning and 140.7 MB in the end (delta: -6.3 MB). Peak memory consumption was 76.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1045 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 263 SDtfs, 279 SDslu, 353 SDs, 0 SdLazy, 63 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 4689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...