/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:23:27,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:23:27,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:23:27,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:23:27,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:23:27,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:23:27,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:23:27,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:23:27,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:23:27,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:23:27,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:23:27,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:23:27,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:23:27,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:23:27,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:23:27,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:23:27,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:23:27,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:23:27,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:23:27,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:23:27,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:23:27,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:23:27,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:23:27,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:23:27,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:23:27,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:23:27,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:23:27,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:23:27,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:23:27,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:23:27,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:23:27,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:23:27,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:23:27,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:23:27,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:23:27,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:23:27,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:23:27,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:23:27,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:23:27,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:23:27,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:23:27,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:23:27,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:23:27,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:23:27,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:23:27,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:23:27,405 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:23:27,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:23:27,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:23:27,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:23:27,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:23:27,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:23:27,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:23:27,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:23:27,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:23:27,407 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:23:27,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:23:27,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:23:27,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:23:27,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:23:27,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:23:27,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:23:27,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:23:27,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:23:27,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:23:27,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:23:27,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:23:27,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:23:27,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:23:27,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:23:27,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:23:27,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:23:27,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:23:27,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:23:27,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:23:27,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:23:27,813 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:23:27,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+sep-reducer.c [2020-10-27 05:23:27,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83111f1c0/2f61cb607d8b4bc699fa1dedf4509d39/FLAG4e0e4b5c7 [2020-10-27 05:23:28,825 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:23:28,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+sep-reducer.c [2020-10-27 05:23:28,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83111f1c0/2f61cb607d8b4bc699fa1dedf4509d39/FLAG4e0e4b5c7 [2020-10-27 05:23:29,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83111f1c0/2f61cb607d8b4bc699fa1dedf4509d39 [2020-10-27 05:23:29,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:23:29,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:23:29,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:23:29,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:23:29,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:23:29,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:23:29" (1/1) ... [2020-10-27 05:23:29,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9aa0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:23:29, skipping insertion in model container [2020-10-27 05:23:29,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:23:29" (1/1) ... [2020-10-27 05:23:29,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:23:29,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:23:31,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:23:31,647 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:23:32,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:23:32,632 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:23:32,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:23:32 WrapperNode [2020-10-27 05:23:32,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:23:32,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:23:32,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:23:32,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:23:32,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:23:32" (1/1) ... [2020-10-27 05:23:32,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:23:32" (1/1) ... [2020-10-27 05:23:32,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:23:32" (1/1) ... [2020-10-27 05:23:32,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:23:32" (1/1) ... [2020-10-27 05:23:32,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:23:32" (1/1) ... [2020-10-27 05:23:32,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:23:32" (1/1) ... [2020-10-27 05:23:32,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:23:32" (1/1) ... [2020-10-27 05:23:32,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:23:32,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:23:32,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:23:32,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:23:32,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:23:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:23:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:23:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:23:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:23:33,013 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:23:33,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:23:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:23:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:23:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:23:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:23:33,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:23:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:23:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:23:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:23:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:23:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:23:33,016 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:23:33,016 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:23:33,017 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:23:33,017 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:23:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:23:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 05:23:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:23:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:23:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:23:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:23:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:23:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:23:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:23:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:23:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:23:43,466 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:23:43,466 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:23:43,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:23:43 BoogieIcfgContainer [2020-10-27 05:23:43,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:23:43,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:23:43,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:23:43,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:23:43,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:23:29" (1/3) ... [2020-10-27 05:23:43,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31213405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:23:43, skipping insertion in model container [2020-10-27 05:23:43,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:23:32" (2/3) ... [2020-10-27 05:23:43,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31213405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:23:43, skipping insertion in model container [2020-10-27 05:23:43,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:23:43" (3/3) ... [2020-10-27 05:23:43,481 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+sep-reducer.c [2020-10-27 05:23:43,494 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:23:43,500 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:23:43,515 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:23:43,553 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:23:43,553 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:23:43,553 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:23:43,553 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:23:43,554 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:23:43,554 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:23:43,554 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:23:43,554 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:23:43,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states. [2020-10-27 05:23:43,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 05:23:43,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:43,639 INFO L422 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, 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] [2020-10-27 05:23:43,639 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:43,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:43,646 INFO L82 PathProgramCache]: Analyzing trace with hash -80909251, now seen corresponding path program 1 times [2020-10-27 05:23:43,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:43,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290557022] [2020-10-27 05:23:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:44,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:45,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:45,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:45,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:45,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:46,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:49,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 05:23:49,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:23:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 05:23:49,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:49,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:23:49,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:23:49,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 05:23:49,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 05:24:02,511 WARN L193 SmtUtils]: Spent 12.66 s on a formula simplification that was a NOOP. DAG size: 1084 [2020-10-27 05:24:02,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:24:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:02,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:02,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:02,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:24:02,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:24:02,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 05:24:02,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:02,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:24:02,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:24:02,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:24:02,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:24:02,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290557022] [2020-10-27 05:24:02,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:24:02,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:24:02,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183729975] [2020-10-27 05:24:02,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:24:02,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:24:02,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:24:02,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:24:02,927 INFO L87 Difference]: Start difference. First operand 2550 states. Second operand 6 states. [2020-10-27 05:24:16,086 WARN L193 SmtUtils]: Spent 12.89 s on a formula simplification that was a NOOP. DAG size: 1090 [2020-10-27 05:25:02,463 WARN L193 SmtUtils]: Spent 12.92 s on a formula simplification that was a NOOP. DAG size: 1089 [2020-10-27 05:25:03,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:25:03,720 INFO L93 Difference]: Finished difference Result 4197 states and 7163 transitions. [2020-10-27 05:25:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:25:03,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-27 05:25:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:25:03,780 INFO L225 Difference]: With dead ends: 4197 [2020-10-27 05:25:03,781 INFO L226 Difference]: Without dead ends: 2911 [2020-10-27 05:25:03,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:25:03,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-10-27 05:25:04,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2739. [2020-10-27 05:25:04,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2739 states. [2020-10-27 05:25:04,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3624 transitions. [2020-10-27 05:25:04,032 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3624 transitions. Word has length 92 [2020-10-27 05:25:04,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:25:04,035 INFO L481 AbstractCegarLoop]: Abstraction has 2739 states and 3624 transitions. [2020-10-27 05:25:04,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:25:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3624 transitions. [2020-10-27 05:25:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 05:25:04,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:25:04,049 INFO L422 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, 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] [2020-10-27 05:25:04,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:25:04,049 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:25:04,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:25:04,050 INFO L82 PathProgramCache]: Analyzing trace with hash -606680619, now seen corresponding path program 1 times [2020-10-27 05:25:04,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:25:04,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848055525] [2020-10-27 05:25:04,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:25:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:04,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:04,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:04,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:08,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:08,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:09,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:09,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 05:25:09,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:25:09,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-27 05:25:09,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:09,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:25:09,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:25:09,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 05:25:09,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:22,674 WARN L193 SmtUtils]: Spent 13.08 s on a formula simplification that was a NOOP. DAG size: 1084 [2020-10-27 05:25:22,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:25:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:22,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:22,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:22,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:25:22,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:25:22,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 05:25:22,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:25:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:25:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:25:22,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:25:23,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848055525] [2020-10-27 05:25:23,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:25:23,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:25:23,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944149728] [2020-10-27 05:25:23,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:25:23,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:25:23,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:25:23,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:25:23,039 INFO L87 Difference]: Start difference. First operand 2739 states and 3624 transitions. Second operand 6 states. [2020-10-27 05:25:36,538 WARN L193 SmtUtils]: Spent 13.13 s on a formula simplification that was a NOOP. DAG size: 1092 [2020-10-27 05:26:03,822 WARN L193 SmtUtils]: Spent 12.84 s on a formula simplification that was a NOOP. DAG size: 1090 [2020-10-27 05:26:05,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:26:05,286 INFO L93 Difference]: Finished difference Result 3462 states and 4596 transitions. [2020-10-27 05:26:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:26:05,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-27 05:26:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:26:05,298 INFO L225 Difference]: With dead ends: 3462 [2020-10-27 05:26:05,298 INFO L226 Difference]: Without dead ends: 2147 [2020-10-27 05:26:05,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 39.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:26:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2020-10-27 05:26:05,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 2073. [2020-10-27 05:26:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2020-10-27 05:26:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2793 transitions. [2020-10-27 05:26:05,411 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2793 transitions. Word has length 92 [2020-10-27 05:26:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:26:05,412 INFO L481 AbstractCegarLoop]: Abstraction has 2073 states and 2793 transitions. [2020-10-27 05:26:05,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:26:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2793 transitions. [2020-10-27 05:26:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 05:26:05,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:26:05,418 INFO L422 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, 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] [2020-10-27 05:26:05,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:26:05,418 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:26:05,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:26:05,419 INFO L82 PathProgramCache]: Analyzing trace with hash 98324648, now seen corresponding path program 1 times [2020-10-27 05:26:05,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:26:05,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062911580] [2020-10-27 05:26:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:26:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:05,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:05,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:07,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:08,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:10,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:10,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 05:26:10,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:26:10,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 05:26:10,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:26:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:26:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 05:26:10,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:23,807 WARN L193 SmtUtils]: Spent 12.98 s on a formula simplification that was a NOOP. DAG size: 1084 [2020-10-27 05:26:23,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:26:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:26:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:26:23,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:26:23,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:26:23,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:26:23,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 05:26:23,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:26:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:26:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:26:23,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:26:23,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:26:24,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:26:24,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062911580] [2020-10-27 05:26:24,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:26:24,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:26:24,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662318994] [2020-10-27 05:26:24,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:26:24,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:26:24,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:26:24,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:26:24,075 INFO L87 Difference]: Start difference. First operand 2073 states and 2793 transitions. Second operand 6 states. [2020-10-27 05:26:37,205 WARN L193 SmtUtils]: Spent 12.89 s on a formula simplification that was a NOOP. DAG size: 1093 [2020-10-27 05:27:01,226 WARN L193 SmtUtils]: Spent 12.93 s on a formula simplification that was a NOOP. DAG size: 1091 [2020-10-27 05:27:02,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:27:02,433 INFO L93 Difference]: Finished difference Result 3679 states and 5049 transitions. [2020-10-27 05:27:02,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:27:02,438 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-27 05:27:02,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:27:02,456 INFO L225 Difference]: With dead ends: 3679 [2020-10-27 05:27:02,457 INFO L226 Difference]: Without dead ends: 2562 [2020-10-27 05:27:02,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 39.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:27:02,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2020-10-27 05:27:02,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2483. [2020-10-27 05:27:02,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2483 states. [2020-10-27 05:27:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3446 transitions. [2020-10-27 05:27:02,605 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3446 transitions. Word has length 92 [2020-10-27 05:27:02,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:27:02,606 INFO L481 AbstractCegarLoop]: Abstraction has 2483 states and 3446 transitions. [2020-10-27 05:27:02,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:27:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3446 transitions. [2020-10-27 05:27:02,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:27:02,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:27:02,615 INFO L422 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, 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] [2020-10-27 05:27:02,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:27:02,615 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:27:02,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:27:02,616 INFO L82 PathProgramCache]: Analyzing trace with hash 681275813, now seen corresponding path program 1 times [2020-10-27 05:27:02,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:27:02,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880818969] [2020-10-27 05:27:02,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:27:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:02,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:02,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:03,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:03,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:04,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:07,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:07,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:27:07,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:27:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 05:27:07,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:27:07,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:27:07,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 05:27:07,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:27:20,784 WARN L193 SmtUtils]: Spent 12.78 s on a formula simplification that was a NOOP. DAG size: 1084 [2020-10-27 05:27:20,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:27:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:27:20,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:27:20,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:27:20,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:27:20,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:27:20,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 05:27:20,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:27:20,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:27:20,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:27:20,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:27:20,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0