/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 06:38:32,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 06:38:32,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 06:38:32,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 06:38:32,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 06:38:32,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 06:38:32,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 06:38:32,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 06:38:32,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 06:38:32,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 06:38:32,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 06:38:32,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 06:38:32,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 06:38:32,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 06:38:32,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 06:38:32,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 06:38:32,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 06:38:32,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 06:38:32,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 06:38:32,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 06:38:32,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 06:38:32,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 06:38:32,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 06:38:32,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 06:38:32,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 06:38:32,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 06:38:32,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 06:38:32,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 06:38:32,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 06:38:32,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 06:38:32,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 06:38:32,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 06:38:32,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 06:38:32,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 06:38:32,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 06:38:32,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 06:38:32,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 06:38:32,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 06:38:32,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 06:38:32,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 06:38:32,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 06:38:32,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-04-18 06:38:32,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 06:38:32,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 06:38:32,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 06:38:32,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 06:38:32,433 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 06:38:32,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 06:38:32,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 06:38:32,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 06:38:32,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 06:38:32,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 06:38:32,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 06:38:32,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 06:38:32,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 06:38:32,436 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 06:38:32,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 06:38:32,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 06:38:32,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 06:38:32,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 06:38:32,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 06:38:32,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 06:38:32,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 06:38:32,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 06:38:32,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 06:38:32,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 06:38:32,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 06:38:32,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 06:38:32,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 06:38:32,439 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 06:38:32,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 06:38:32,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 06:38:32,735 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 06:38:32,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 06:38:32,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 06:38:32,758 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 06:38:32,758 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 06:38:32,759 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-04-18 06:38:32,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/647b87b47/c68c98d1464e464a9cba0daaae13adff/FLAG4f0a20f0a [2020-04-18 06:38:33,371 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 06:38:33,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-04-18 06:38:33,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/647b87b47/c68c98d1464e464a9cba0daaae13adff/FLAG4f0a20f0a [2020-04-18 06:38:33,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/647b87b47/c68c98d1464e464a9cba0daaae13adff [2020-04-18 06:38:33,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 06:38:33,678 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 06:38:33,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 06:38:33,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 06:38:33,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 06:38:33,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:38:33" (1/1) ... [2020-04-18 06:38:33,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e69f865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:38:33, skipping insertion in model container [2020-04-18 06:38:33,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:38:33" (1/1) ... [2020-04-18 06:38:33,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 06:38:33,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 06:38:34,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:38:34,241 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 06:38:34,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:38:34,378 INFO L208 MainTranslator]: Completed translation [2020-04-18 06:38:34,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:38:34 WrapperNode [2020-04-18 06:38:34,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 06:38:34,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 06:38:34,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 06:38:34,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 06:38:34,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:38:34" (1/1) ... [2020-04-18 06:38:34,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:38:34" (1/1) ... [2020-04-18 06:38:34,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 06:38:34,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 06:38:34,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 06:38:34,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 06:38:34,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:38:34" (1/1) ... [2020-04-18 06:38:34,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:38:34" (1/1) ... [2020-04-18 06:38:34,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:38:34" (1/1) ... [2020-04-18 06:38:34,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:38:34" (1/1) ... [2020-04-18 06:38:34,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:38:34" (1/1) ... [2020-04-18 06:38:34,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:38:34" (1/1) ... [2020-04-18 06:38:34,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:38:34" (1/1) ... [2020-04-18 06:38:34,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 06:38:34,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 06:38:34,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 06:38:34,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 06:38:34,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:38:34" (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 [2020-04-18 06:38:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 06:38:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 06:38:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 06:38:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 06:38:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 06:38:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 06:38:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 06:38:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 06:38:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 06:38:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 06:38:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 06:38:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 06:38:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 06:38:34,540 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 06:38:34,935 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 06:38:34,935 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 06:38:34,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:38:34 BoogieIcfgContainer [2020-04-18 06:38:34,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 06:38:34,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 06:38:34,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 06:38:34,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 06:38:34,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:38:33" (1/3) ... [2020-04-18 06:38:34,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431b1035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:38:34, skipping insertion in model container [2020-04-18 06:38:34,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:38:34" (2/3) ... [2020-04-18 06:38:34,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431b1035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:38:34, skipping insertion in model container [2020-04-18 06:38:34,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:38:34" (3/3) ... [2020-04-18 06:38:34,954 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-04-18 06:38:34,963 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 06:38:34,963 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 06:38:34,970 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 06:38:34,971 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 06:38:35,006 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,007 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,007 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,008 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,008 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,009 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,009 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,009 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,010 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,010 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,011 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,011 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,012 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,013 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,013 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,013 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,014 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,014 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,021 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,021 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,022 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,022 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,038 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,038 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,039 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,039 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,041 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,042 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,042 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,042 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:38:35,059 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 06:38:35,077 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 06:38:35,077 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 06:38:35,078 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 06:38:35,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 06:38:35,078 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 06:38:35,078 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 06:38:35,078 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 06:38:35,079 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 06:38:35,092 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 06:38:35,608 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 06:38:35,611 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 06:38:35,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 06:38:35,647 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:38:35,649 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:38:35,649 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:38:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:38:35,656 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-04-18 06:38:35,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:38:35,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311058829] [2020-04-18 06:38:35,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:38:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:38:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:38:36,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311058829] [2020-04-18 06:38:36,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:38:36,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:38:36,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849357986] [2020-04-18 06:38:36,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:38:36,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:38:36,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:38:36,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:38:36,275 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 06:38:36,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:38:36,917 INFO L93 Difference]: Finished difference Result 20332 states and 70354 transitions. [2020-04-18 06:38:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:38:36,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 06:38:36,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:38:37,017 INFO L225 Difference]: With dead ends: 20332 [2020-04-18 06:38:37,017 INFO L226 Difference]: Without dead ends: 6592 [2020-04-18 06:38:37,020 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:38:37,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6592 states. [2020-04-18 06:38:37,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6592 to 5458. [2020-04-18 06:38:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5458 states. [2020-04-18 06:38:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 18523 transitions. [2020-04-18 06:38:37,479 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 18523 transitions. Word has length 36 [2020-04-18 06:38:37,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:38:37,481 INFO L479 AbstractCegarLoop]: Abstraction has 5458 states and 18523 transitions. [2020-04-18 06:38:37,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:38:37,481 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 18523 transitions. [2020-04-18 06:38:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 06:38:37,495 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:38:37,496 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:38:37,496 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:38:37,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:38:37,497 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 1 times [2020-04-18 06:38:37,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:38:37,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930348598] [2020-04-18 06:38:37,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:38:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:38:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:38:37,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930348598] [2020-04-18 06:38:37,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:38:37,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:38:37,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848365038] [2020-04-18 06:38:37,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:38:37,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:38:37,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:38:37,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:38:37,736 INFO L87 Difference]: Start difference. First operand 5458 states and 18523 transitions. Second operand 7 states. [2020-04-18 06:38:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:38:38,123 INFO L93 Difference]: Finished difference Result 7518 states and 25051 transitions. [2020-04-18 06:38:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:38:38,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 06:38:38,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:38:38,169 INFO L225 Difference]: With dead ends: 7518 [2020-04-18 06:38:38,170 INFO L226 Difference]: Without dead ends: 5710 [2020-04-18 06:38:38,181 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:38:38,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2020-04-18 06:38:38,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 4638. [2020-04-18 06:38:38,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4638 states. [2020-04-18 06:38:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 15593 transitions. [2020-04-18 06:38:38,476 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 15593 transitions. Word has length 38 [2020-04-18 06:38:38,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:38:38,477 INFO L479 AbstractCegarLoop]: Abstraction has 4638 states and 15593 transitions. [2020-04-18 06:38:38,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:38:38,477 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 15593 transitions. [2020-04-18 06:38:38,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 06:38:38,488 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:38:38,488 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:38:38,489 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:38:38,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:38:38,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1730710591, now seen corresponding path program 1 times [2020-04-18 06:38:38,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:38:38,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725300860] [2020-04-18 06:38:38,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:38:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:38:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:38:38,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725300860] [2020-04-18 06:38:38,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:38:38,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:38:38,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226438088] [2020-04-18 06:38:38,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:38:38,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:38:38,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:38:38,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:38:38,701 INFO L87 Difference]: Start difference. First operand 4638 states and 15593 transitions. Second operand 7 states. [2020-04-18 06:38:39,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:38:39,010 INFO L93 Difference]: Finished difference Result 6558 states and 21696 transitions. [2020-04-18 06:38:39,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:38:39,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 06:38:39,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:38:39,045 INFO L225 Difference]: With dead ends: 6558 [2020-04-18 06:38:39,045 INFO L226 Difference]: Without dead ends: 5314 [2020-04-18 06:38:39,046 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:38:39,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5314 states. [2020-04-18 06:38:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5314 to 4172. [2020-04-18 06:38:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4172 states. [2020-04-18 06:38:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4172 states to 4172 states and 13897 transitions. [2020-04-18 06:38:39,811 INFO L78 Accepts]: Start accepts. Automaton has 4172 states and 13897 transitions. Word has length 39 [2020-04-18 06:38:39,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:38:39,811 INFO L479 AbstractCegarLoop]: Abstraction has 4172 states and 13897 transitions. [2020-04-18 06:38:39,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:38:39,812 INFO L276 IsEmpty]: Start isEmpty. Operand 4172 states and 13897 transitions. [2020-04-18 06:38:39,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 06:38:39,822 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:38:39,822 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:38:39,822 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:38:39,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:38:39,823 INFO L82 PathProgramCache]: Analyzing trace with hash 795573810, now seen corresponding path program 1 times [2020-04-18 06:38:39,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:38:39,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556863470] [2020-04-18 06:38:39,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:38:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:38:39,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:38:39,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556863470] [2020-04-18 06:38:39,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:38:39,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:38:39,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3409234] [2020-04-18 06:38:39,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:38:39,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:38:39,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:38:39,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:38:39,941 INFO L87 Difference]: Start difference. First operand 4172 states and 13897 transitions. Second operand 7 states. [2020-04-18 06:38:40,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:38:40,233 INFO L93 Difference]: Finished difference Result 6062 states and 19899 transitions. [2020-04-18 06:38:40,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:38:40,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-04-18 06:38:40,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:38:40,253 INFO L225 Difference]: With dead ends: 6062 [2020-04-18 06:38:40,253 INFO L226 Difference]: Without dead ends: 4914 [2020-04-18 06:38:40,254 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:38:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4914 states. [2020-04-18 06:38:40,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4914 to 3769. [2020-04-18 06:38:40,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3769 states. [2020-04-18 06:38:40,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3769 states to 3769 states and 12466 transitions. [2020-04-18 06:38:40,382 INFO L78 Accepts]: Start accepts. Automaton has 3769 states and 12466 transitions. Word has length 40 [2020-04-18 06:38:40,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:38:40,382 INFO L479 AbstractCegarLoop]: Abstraction has 3769 states and 12466 transitions. [2020-04-18 06:38:40,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:38:40,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3769 states and 12466 transitions. [2020-04-18 06:38:40,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 06:38:40,392 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:38:40,392 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:38:40,393 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:38:40,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:38:40,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1538988574, now seen corresponding path program 1 times [2020-04-18 06:38:40,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:38:40,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346774889] [2020-04-18 06:38:40,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:38:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:38:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:38:40,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346774889] [2020-04-18 06:38:40,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:38:40,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:38:40,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590572307] [2020-04-18 06:38:40,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:38:40,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:38:40,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:38:40,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:38:40,531 INFO L87 Difference]: Start difference. First operand 3769 states and 12466 transitions. Second operand 8 states. [2020-04-18 06:38:40,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:38:40,760 INFO L93 Difference]: Finished difference Result 5361 states and 17468 transitions. [2020-04-18 06:38:40,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 06:38:40,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-04-18 06:38:40,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:38:40,770 INFO L225 Difference]: With dead ends: 5361 [2020-04-18 06:38:40,770 INFO L226 Difference]: Without dead ends: 2638 [2020-04-18 06:38:40,771 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:38:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2020-04-18 06:38:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2226. [2020-04-18 06:38:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2226 states. [2020-04-18 06:38:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 7134 transitions. [2020-04-18 06:38:40,841 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 7134 transitions. Word has length 41 [2020-04-18 06:38:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:38:40,842 INFO L479 AbstractCegarLoop]: Abstraction has 2226 states and 7134 transitions. [2020-04-18 06:38:40,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:38:40,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 7134 transitions. [2020-04-18 06:38:40,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 06:38:40,850 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:38:40,851 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:38:40,851 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:38:40,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:38:40,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1259730271, now seen corresponding path program 1 times [2020-04-18 06:38:40,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:38:40,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166710252] [2020-04-18 06:38:40,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:38:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:38:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:38:41,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166710252] [2020-04-18 06:38:41,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:38:41,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:38:41,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333186741] [2020-04-18 06:38:41,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:38:41,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:38:41,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:38:41,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:38:41,007 INFO L87 Difference]: Start difference. First operand 2226 states and 7134 transitions. Second operand 6 states. [2020-04-18 06:38:41,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:38:41,133 INFO L93 Difference]: Finished difference Result 2966 states and 9369 transitions. [2020-04-18 06:38:41,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:38:41,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-04-18 06:38:41,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:38:41,143 INFO L225 Difference]: With dead ends: 2966 [2020-04-18 06:38:41,143 INFO L226 Difference]: Without dead ends: 2014 [2020-04-18 06:38:41,143 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:38:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2020-04-18 06:38:41,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 2014. [2020-04-18 06:38:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2014 states. [2020-04-18 06:38:41,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 6351 transitions. [2020-04-18 06:38:41,199 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 6351 transitions. Word has length 44 [2020-04-18 06:38:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:38:41,199 INFO L479 AbstractCegarLoop]: Abstraction has 2014 states and 6351 transitions. [2020-04-18 06:38:41,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:38:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 6351 transitions. [2020-04-18 06:38:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 06:38:41,206 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:38:41,206 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:38:41,207 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:38:41,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:38:41,207 INFO L82 PathProgramCache]: Analyzing trace with hash -211044402, now seen corresponding path program 1 times [2020-04-18 06:38:41,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:38:41,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609574018] [2020-04-18 06:38:41,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:38:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:38:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:38:41,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609574018] [2020-04-18 06:38:41,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:38:41,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:38:41,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677337680] [2020-04-18 06:38:41,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:38:41,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:38:41,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:38:41,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:38:41,307 INFO L87 Difference]: Start difference. First operand 2014 states and 6351 transitions. Second operand 7 states. [2020-04-18 06:38:41,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:38:41,444 INFO L93 Difference]: Finished difference Result 2266 states and 6966 transitions. [2020-04-18 06:38:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:38:41,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-04-18 06:38:41,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:38:41,451 INFO L225 Difference]: With dead ends: 2266 [2020-04-18 06:38:41,451 INFO L226 Difference]: Without dead ends: 1474 [2020-04-18 06:38:41,452 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 06:38:41,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2020-04-18 06:38:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2020-04-18 06:38:41,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-04-18 06:38:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 4446 transitions. [2020-04-18 06:38:41,487 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 4446 transitions. Word has length 45 [2020-04-18 06:38:41,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:38:41,488 INFO L479 AbstractCegarLoop]: Abstraction has 1474 states and 4446 transitions. [2020-04-18 06:38:41,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:38:41,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 4446 transitions. [2020-04-18 06:38:41,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 06:38:41,493 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:38:41,493 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:38:41,493 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:38:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:38:41,493 INFO L82 PathProgramCache]: Analyzing trace with hash -962653023, now seen corresponding path program 1 times [2020-04-18 06:38:41,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:38:41,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460771572] [2020-04-18 06:38:41,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:38:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:38:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:38:41,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460771572] [2020-04-18 06:38:41,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:38:41,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:38:41,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343635649] [2020-04-18 06:38:41,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:38:41,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:38:41,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:38:41,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:38:41,595 INFO L87 Difference]: Start difference. First operand 1474 states and 4446 transitions. Second operand 8 states. [2020-04-18 06:38:41,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:38:41,746 INFO L93 Difference]: Finished difference Result 1285 states and 3762 transitions. [2020-04-18 06:38:41,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 06:38:41,746 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-04-18 06:38:41,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:38:41,749 INFO L225 Difference]: With dead ends: 1285 [2020-04-18 06:38:41,749 INFO L226 Difference]: Without dead ends: 677 [2020-04-18 06:38:41,750 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:38:41,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-04-18 06:38:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2020-04-18 06:38:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2020-04-18 06:38:41,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1917 transitions. [2020-04-18 06:38:41,769 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1917 transitions. Word has length 46 [2020-04-18 06:38:41,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:38:41,769 INFO L479 AbstractCegarLoop]: Abstraction has 677 states and 1917 transitions. [2020-04-18 06:38:41,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:38:41,770 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1917 transitions. [2020-04-18 06:38:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 06:38:41,772 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:38:41,772 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:38:41,772 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:38:41,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:38:41,773 INFO L82 PathProgramCache]: Analyzing trace with hash 171910110, now seen corresponding path program 1 times [2020-04-18 06:38:41,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:38:41,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894994006] [2020-04-18 06:38:41,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:38:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:38:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:38:41,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894994006] [2020-04-18 06:38:41,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:38:41,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:38:41,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956802718] [2020-04-18 06:38:41,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:38:41,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:38:41,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:38:41,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:38:41,943 INFO L87 Difference]: Start difference. First operand 677 states and 1917 transitions. Second operand 8 states. [2020-04-18 06:38:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:38:42,055 INFO L93 Difference]: Finished difference Result 1080 states and 3094 transitions. [2020-04-18 06:38:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:38:42,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-04-18 06:38:42,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:38:42,058 INFO L225 Difference]: With dead ends: 1080 [2020-04-18 06:38:42,058 INFO L226 Difference]: Without dead ends: 633 [2020-04-18 06:38:42,059 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-04-18 06:38:42,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-04-18 06:38:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2020-04-18 06:38:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-04-18 06:38:42,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1783 transitions. [2020-04-18 06:38:42,076 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1783 transitions. Word has length 48 [2020-04-18 06:38:42,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:38:42,076 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 1783 transitions. [2020-04-18 06:38:42,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:38:42,077 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1783 transitions. [2020-04-18 06:38:42,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 06:38:42,078 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:38:42,079 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:38:42,079 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:38:42,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:38:42,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1078943376, now seen corresponding path program 2 times [2020-04-18 06:38:42,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:38:42,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68147042] [2020-04-18 06:38:42,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:38:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:38:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:38:42,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68147042] [2020-04-18 06:38:42,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:38:42,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:38:42,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384924649] [2020-04-18 06:38:42,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:38:42,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:38:42,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:38:42,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:38:42,181 INFO L87 Difference]: Start difference. First operand 633 states and 1783 transitions. Second operand 7 states. [2020-04-18 06:38:42,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:38:42,256 INFO L93 Difference]: Finished difference Result 579 states and 1621 transitions. [2020-04-18 06:38:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 06:38:42,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-04-18 06:38:42,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:38:42,256 INFO L225 Difference]: With dead ends: 579 [2020-04-18 06:38:42,256 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 06:38:42,257 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:38:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 06:38:42,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 06:38:42,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 06:38:42,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 06:38:42,258 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 06:38:42,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:38:42,258 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 06:38:42,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:38:42,258 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 06:38:42,258 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 06:38:42,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 06:38:42 BasicIcfg [2020-04-18 06:38:42,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 06:38:42,267 INFO L168 Benchmark]: Toolchain (without parser) took 8602.50 ms. Allocated memory was 139.5 MB in the beginning and 504.4 MB in the end (delta: 364.9 MB). Free memory was 101.2 MB in the beginning and 357.0 MB in the end (delta: -255.8 MB). Peak memory consumption was 109.1 MB. Max. memory is 7.1 GB. [2020-04-18 06:38:42,267 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 06:38:42,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.34 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 99.2 MB in the beginning and 161.3 MB in the end (delta: -62.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-04-18 06:38:42,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.30 ms. Allocated memory is still 204.5 MB. Free memory was 161.3 MB in the beginning and 158.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-18 06:38:42,270 INFO L168 Benchmark]: Boogie Preprocessor took 33.58 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 157.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 06:38:42,271 INFO L168 Benchmark]: RCFGBuilder took 474.59 ms. Allocated memory is still 204.5 MB. Free memory was 157.3 MB in the beginning and 135.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 06:38:42,271 INFO L168 Benchmark]: TraceAbstraction took 7318.43 ms. Allocated memory was 204.5 MB in the beginning and 504.4 MB in the end (delta: 299.9 MB). Free memory was 135.0 MB in the beginning and 357.0 MB in the end (delta: -221.9 MB). Peak memory consumption was 77.9 MB. Max. memory is 7.1 GB. [2020-04-18 06:38:42,275 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 700.34 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 99.2 MB in the beginning and 161.3 MB in the end (delta: -62.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.30 ms. Allocated memory is still 204.5 MB. Free memory was 161.3 MB in the beginning and 158.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.58 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 157.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.59 ms. Allocated memory is still 204.5 MB. Free memory was 157.3 MB in the beginning and 135.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7318.43 ms. Allocated memory was 204.5 MB in the beginning and 504.4 MB in the end (delta: 299.9 MB). Free memory was 135.0 MB in the beginning and 357.0 MB in the end (delta: -221.9 MB). Peak memory consumption was 77.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 7.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 942 SDtfs, 1506 SDslu, 3256 SDs, 0 SdLazy, 527 SolverSat, 93 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 1.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 4905 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 425 NumberOfCodeBlocks, 425 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 415 ConstructedInterpolants, 0 QuantifiedInterpolants, 83187 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...