/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 18:37:09,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 18:37:09,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 18:37:09,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 18:37:09,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 18:37:09,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 18:37:09,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 18:37:09,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 18:37:09,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 18:37:09,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 18:37:09,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 18:37:09,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 18:37:09,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 18:37:09,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 18:37:09,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 18:37:09,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 18:37:09,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 18:37:09,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 18:37:09,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 18:37:09,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 18:37:09,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 18:37:09,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 18:37:09,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 18:37:09,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 18:37:09,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 18:37:09,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 18:37:09,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 18:37:09,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 18:37:09,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 18:37:09,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 18:37:09,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 18:37:09,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 18:37:09,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 18:37:09,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 18:37:09,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 18:37:09,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 18:37:09,394 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 [2020-10-15 18:37:09,417 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 18:37:09,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 18:37:09,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 18:37:09,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 18:37:09,419 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 18:37:09,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 18:37:09,420 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 18:37:09,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 18:37:09,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 18:37:09,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 18:37:09,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 18:37:09,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 18:37:09,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 18:37:09,421 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 18:37:09,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 18:37:09,422 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 18:37:09,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 18:37:09,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 18:37:09,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 18:37:09,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 18:37:09,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 18:37:09,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:37:09,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 18:37:09,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 18:37:09,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 18:37:09,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 18:37:09,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 18:37:09,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 18:37:09,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 18:37:09,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 18:37:09,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 18:37:09,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 18:37:09,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 18:37:09,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 18:37:09,726 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 18:37:09,727 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-10-15 18:37:09,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d598db4f0/d4d55e4c66df47b4bceec58ce346f00f/FLAG475c9adf5 [2020-10-15 18:37:10,313 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 18:37:10,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-10-15 18:37:10,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d598db4f0/d4d55e4c66df47b4bceec58ce346f00f/FLAG475c9adf5 [2020-10-15 18:37:10,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d598db4f0/d4d55e4c66df47b4bceec58ce346f00f [2020-10-15 18:37:10,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 18:37:10,651 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 18:37:10,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 18:37:10,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 18:37:10,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 18:37:10,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:37:10" (1/1) ... [2020-10-15 18:37:10,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c97630d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:37:10, skipping insertion in model container [2020-10-15 18:37:10,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:37:10" (1/1) ... [2020-10-15 18:37:10,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 18:37:10,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 18:37:11,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:37:11,181 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 18:37:11,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:37:11,361 INFO L208 MainTranslator]: Completed translation [2020-10-15 18:37:11,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:37:11 WrapperNode [2020-10-15 18:37:11,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 18:37:11,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 18:37:11,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 18:37:11,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 18:37:11,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:37:11" (1/1) ... [2020-10-15 18:37:11,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:37:11" (1/1) ... [2020-10-15 18:37:11,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 18:37:11,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 18:37:11,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 18:37:11,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 18:37:11,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:37:11" (1/1) ... [2020-10-15 18:37:11,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:37:11" (1/1) ... [2020-10-15 18:37:11,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:37:11" (1/1) ... [2020-10-15 18:37:11,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:37:11" (1/1) ... [2020-10-15 18:37:11,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:37:11" (1/1) ... [2020-10-15 18:37:11,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:37:11" (1/1) ... [2020-10-15 18:37:11,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:37:11" (1/1) ... [2020-10-15 18:37:11,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 18:37:11,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 18:37:11,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 18:37:11,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 18:37:11,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:37:11" (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 [2020-10-15 18:37:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 18:37:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 18:37:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 18:37:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 18:37:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 18:37:11,526 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 18:37:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 18:37:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 18:37:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 18:37:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 18:37:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 18:37:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 18:37:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 18:37:11,531 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 18:37:11,886 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 18:37:11,886 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 18:37:11,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:37:11 BoogieIcfgContainer [2020-10-15 18:37:11,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 18:37:11,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 18:37:11,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 18:37:11,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 18:37:11,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:37:10" (1/3) ... [2020-10-15 18:37:11,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c348ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:37:11, skipping insertion in model container [2020-10-15 18:37:11,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:37:11" (2/3) ... [2020-10-15 18:37:11,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c348ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:37:11, skipping insertion in model container [2020-10-15 18:37:11,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:37:11" (3/3) ... [2020-10-15 18:37:11,897 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2020-10-15 18:37:11,909 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 18:37:11,909 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 18:37:11,917 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 18:37:11,918 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 18:37:11,946 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,947 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,947 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,947 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,948 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,948 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,949 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,949 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,949 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,949 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,950 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,950 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,950 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,951 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,951 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,955 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,956 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,956 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,956 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,961 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,962 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,962 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,962 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,965 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,966 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,967 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:37:11,980 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 18:37:11,998 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 18:37:11,998 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 18:37:11,999 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 18:37:11,999 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 18:37:11,999 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 18:37:11,999 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 18:37:11,999 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 18:37:11,999 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 18:37:12,012 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 18:37:12,015 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 18:37:12,018 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 18:37:12,020 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-15 18:37:12,063 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-15 18:37:12,064 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 18:37:12,069 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 18:37:12,072 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 18:37:13,629 INFO L132 LiptonReduction]: Checked pairs total: 2936 [2020-10-15 18:37:13,629 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-15 18:37:13,637 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-15 18:37:13,667 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 18:37:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 18:37:13,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 18:37:13,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:37:13,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:37:13,679 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:37:13,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:37:13,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-15 18:37:13,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:37:13,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094599946] [2020-10-15 18:37:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:37:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:37:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:37:13,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094599946] [2020-10-15 18:37:13,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:37:13,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:37:13,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912239780] [2020-10-15 18:37:13,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:37:13,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:37:13,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:37:13,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:37:13,942 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 18:37:13,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:37:13,998 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-15 18:37:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:37:14,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 18:37:14,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:37:14,018 INFO L225 Difference]: With dead ends: 282 [2020-10-15 18:37:14,019 INFO L226 Difference]: Without dead ends: 218 [2020-10-15 18:37:14,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:37:14,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-15 18:37:14,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-15 18:37:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-15 18:37:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-15 18:37:14,113 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-15 18:37:14,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:37:14,114 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-15 18:37:14,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:37:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-15 18:37:14,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 18:37:14,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:37:14,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:37:14,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 18:37:14,117 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:37:14,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:37:14,117 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-10-15 18:37:14,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:37:14,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109414836] [2020-10-15 18:37:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:37:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:37:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:37:14,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109414836] [2020-10-15 18:37:14,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:37:14,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:37:14,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652686672] [2020-10-15 18:37:14,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:37:14,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:37:14,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:37:14,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:37:14,175 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-15 18:37:14,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:37:14,197 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-15 18:37:14,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:37:14,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 18:37:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:37:14,200 INFO L225 Difference]: With dead ends: 202 [2020-10-15 18:37:14,200 INFO L226 Difference]: Without dead ends: 202 [2020-10-15 18:37:14,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:37:14,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-15 18:37:14,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-15 18:37:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-15 18:37:14,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-15 18:37:14,218 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-15 18:37:14,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:37:14,218 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-15 18:37:14,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:37:14,219 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-15 18:37:14,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 18:37:14,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:37:14,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:37:14,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 18:37:14,221 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:37:14,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:37:14,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-10-15 18:37:14,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:37:14,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956360933] [2020-10-15 18:37:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:37:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:37:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:37:14,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956360933] [2020-10-15 18:37:14,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:37:14,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:37:14,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086677050] [2020-10-15 18:37:14,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:37:14,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:37:14,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:37:14,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:37:14,286 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-15 18:37:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:37:14,297 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-10-15 18:37:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:37:14,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 18:37:14,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:37:14,300 INFO L225 Difference]: With dead ends: 194 [2020-10-15 18:37:14,300 INFO L226 Difference]: Without dead ends: 194 [2020-10-15 18:37:14,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:37:14,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-15 18:37:14,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-15 18:37:14,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-15 18:37:14,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-10-15 18:37:14,313 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-10-15 18:37:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:37:14,314 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-10-15 18:37:14,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:37:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-10-15 18:37:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 18:37:14,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:37:14,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:37:14,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 18:37:14,316 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:37:14,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:37:14,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-10-15 18:37:14,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:37:14,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096150352] [2020-10-15 18:37:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:37:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:37:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:37:14,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096150352] [2020-10-15 18:37:14,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:37:14,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:37:14,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970528918] [2020-10-15 18:37:14,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:37:14,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:37:14,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:37:14,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:37:14,379 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-10-15 18:37:14,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:37:14,419 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-10-15 18:37:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:37:14,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 18:37:14,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:37:14,421 INFO L225 Difference]: With dead ends: 225 [2020-10-15 18:37:14,421 INFO L226 Difference]: Without dead ends: 161 [2020-10-15 18:37:14,422 INFO L677 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 [2020-10-15 18:37:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-15 18:37:14,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-10-15 18:37:14,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-15 18:37:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-10-15 18:37:14,431 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-10-15 18:37:14,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:37:14,431 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-10-15 18:37:14,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:37:14,431 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-10-15 18:37:14,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 18:37:14,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:37:14,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:37:14,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 18:37:14,433 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:37:14,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:37:14,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-10-15 18:37:14,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:37:14,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243444870] [2020-10-15 18:37:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:37:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:37:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:37:14,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243444870] [2020-10-15 18:37:14,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:37:14,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:37:14,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430257304] [2020-10-15 18:37:14,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:37:14,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:37:14,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:37:14,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:37:14,509 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-10-15 18:37:14,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:37:14,550 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-10-15 18:37:14,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:37:14,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-15 18:37:14,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:37:14,552 INFO L225 Difference]: With dead ends: 160 [2020-10-15 18:37:14,552 INFO L226 Difference]: Without dead ends: 123 [2020-10-15 18:37:14,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:37:14,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-15 18:37:14,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-15 18:37:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-15 18:37:14,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-15 18:37:14,558 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-10-15 18:37:14,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:37:14,559 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-15 18:37:14,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:37:14,559 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-15 18:37:14,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 18:37:14,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:37:14,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:37:14,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 18:37:14,561 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:37:14,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:37:14,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-10-15 18:37:14,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:37:14,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339296942] [2020-10-15 18:37:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:37:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:37:14,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:37:14,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339296942] [2020-10-15 18:37:14,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:37:14,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 18:37:14,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493831885] [2020-10-15 18:37:14,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 18:37:14,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:37:14,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 18:37:14,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:37:14,617 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-10-15 18:37:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:37:14,664 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-10-15 18:37:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 18:37:14,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-15 18:37:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:37:14,666 INFO L225 Difference]: With dead ends: 118 [2020-10-15 18:37:14,666 INFO L226 Difference]: Without dead ends: 108 [2020-10-15 18:37:14,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 18:37:14,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-15 18:37:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-15 18:37:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-15 18:37:14,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-10-15 18:37:14,671 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-10-15 18:37:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:37:14,671 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-10-15 18:37:14,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 18:37:14,671 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-10-15 18:37:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:37:14,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:37:14,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:37:14,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 18:37:14,673 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:37:14,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:37:14,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-10-15 18:37:14,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:37:14,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88137119] [2020-10-15 18:37:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:37:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:37:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:37:14,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88137119] [2020-10-15 18:37:14,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:37:14,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:37:14,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812545417] [2020-10-15 18:37:14,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:37:14,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:37:14,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:37:14,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:37:14,711 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-10-15 18:37:14,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:37:14,726 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-10-15 18:37:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:37:14,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 18:37:14,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:37:14,727 INFO L225 Difference]: With dead ends: 133 [2020-10-15 18:37:14,727 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 18:37:14,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:37:14,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 18:37:14,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-15 18:37:14,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-15 18:37:14,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-15 18:37:14,730 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-10-15 18:37:14,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:37:14,730 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-15 18:37:14,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:37:14,730 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-15 18:37:14,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:37:14,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:37:14,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:37:14,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 18:37:14,732 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:37:14,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:37:14,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-10-15 18:37:14,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:37:14,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83199910] [2020-10-15 18:37:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:37:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:37:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:37:14,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83199910] [2020-10-15 18:37:14,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:37:14,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:37:14,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808764671] [2020-10-15 18:37:14,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:37:14,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:37:14,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:37:14,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:37:14,766 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-15 18:37:14,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:37:14,783 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-10-15 18:37:14,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:37:14,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 18:37:14,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:37:14,784 INFO L225 Difference]: With dead ends: 63 [2020-10-15 18:37:14,784 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 18:37:14,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:37:14,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 18:37:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-15 18:37:14,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-15 18:37:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-15 18:37:14,786 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-10-15 18:37:14,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:37:14,787 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-15 18:37:14,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:37:14,787 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-15 18:37:14,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:37:14,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:37:14,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:37:14,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 18:37:14,788 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:37:14,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:37:14,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-10-15 18:37:14,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:37:14,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954122193] [2020-10-15 18:37:14,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:37:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:37:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:37:14,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954122193] [2020-10-15 18:37:14,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:37:14,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:37:14,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544893084] [2020-10-15 18:37:14,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:37:14,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:37:14,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:37:14,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:37:14,820 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-15 18:37:14,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:37:14,838 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-10-15 18:37:14,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:37:14,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 18:37:14,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:37:14,839 INFO L225 Difference]: With dead ends: 56 [2020-10-15 18:37:14,839 INFO L226 Difference]: Without dead ends: 35 [2020-10-15 18:37:14,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:37:14,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-15 18:37:14,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-15 18:37:14,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-15 18:37:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-15 18:37:14,841 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-15 18:37:14,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:37:14,842 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-15 18:37:14,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:37:14,842 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-15 18:37:14,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:37:14,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:37:14,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:37:14,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 18:37:14,843 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:37:14,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:37:14,843 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-10-15 18:37:14,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:37:14,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181612450] [2020-10-15 18:37:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:37:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:37:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:37:14,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181612450] [2020-10-15 18:37:14,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:37:14,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:37:14,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105800920] [2020-10-15 18:37:14,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:37:14,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:37:14,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:37:14,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:37:14,876 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-15 18:37:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:37:14,891 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-10-15 18:37:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:37:14,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 18:37:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:37:14,892 INFO L225 Difference]: With dead ends: 34 [2020-10-15 18:37:14,892 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 18:37:14,893 INFO L677 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 [2020-10-15 18:37:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 18:37:14,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 18:37:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 18:37:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 18:37:14,894 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 18:37:14,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:37:14,894 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 18:37:14,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:37:14,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 18:37:14,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 18:37:14,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 18:37:14,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:37:14 BasicIcfg [2020-10-15 18:37:14,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 18:37:14,902 INFO L168 Benchmark]: Toolchain (without parser) took 4250.04 ms. Allocated memory was 245.4 MB in the beginning and 364.9 MB in the end (delta: 119.5 MB). Free memory was 200.5 MB in the beginning and 224.8 MB in the end (delta: -24.3 MB). Peak memory consumption was 95.2 MB. Max. memory is 14.2 GB. [2020-10-15 18:37:14,902 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 245.4 MB. Free memory is still 221.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 18:37:14,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.01 ms. Allocated memory was 245.4 MB in the beginning and 297.8 MB in the end (delta: 52.4 MB). Free memory was 200.5 MB in the beginning and 251.1 MB in the end (delta: -50.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-15 18:37:14,904 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.53 ms. Allocated memory is still 297.8 MB. Free memory was 251.1 MB in the beginning and 248.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:37:14,905 INFO L168 Benchmark]: Boogie Preprocessor took 27.35 ms. Allocated memory is still 297.8 MB. Free memory was 248.5 MB in the beginning and 246.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:37:14,906 INFO L168 Benchmark]: RCFGBuilder took 440.43 ms. Allocated memory is still 297.8 MB. Free memory was 246.0 MB in the beginning and 224.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-15 18:37:14,907 INFO L168 Benchmark]: TraceAbstraction took 3009.12 ms. Allocated memory was 297.8 MB in the beginning and 364.9 MB in the end (delta: 67.1 MB). Free memory was 224.1 MB in the beginning and 224.8 MB in the end (delta: -667.5 kB). Peak memory consumption was 66.4 MB. Max. memory is 14.2 GB. [2020-10-15 18:37:14,911 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 245.4 MB. Free memory is still 221.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 707.01 ms. Allocated memory was 245.4 MB in the beginning and 297.8 MB in the end (delta: 52.4 MB). Free memory was 200.5 MB in the beginning and 251.1 MB in the end (delta: -50.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 57.53 ms. Allocated memory is still 297.8 MB. Free memory was 251.1 MB in the beginning and 248.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.35 ms. Allocated memory is still 297.8 MB. Free memory was 248.5 MB in the beginning and 246.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 440.43 ms. Allocated memory is still 297.8 MB. Free memory was 246.0 MB in the beginning and 224.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3009.12 ms. Allocated memory was 297.8 MB in the beginning and 364.9 MB in the end (delta: 67.1 MB). Free memory was 224.1 MB in the beginning and 224.8 MB in the end (delta: -667.5 kB). Peak memory consumption was 66.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 851 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2936 MoverChecksTotal - 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 205 SDtfs, 151 SDslu, 247 SDs, 0 SdLazy, 129 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...