/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/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 SingleStatement --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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:13:32,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:13:32,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:13:32,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:13:32,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:13:32,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:13:32,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:13:32,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:13:32,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:13:32,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:13:32,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:13:32,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:13:32,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:13:32,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:13:32,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:13:32,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:13:32,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:13:32,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:13:32,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:13:32,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:13:32,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:13:32,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:13:32,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:13:32,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:13:32,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:13:32,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:13:32,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:13:32,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:13:32,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:13:32,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:13:32,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:13:32,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:13:32,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:13:32,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:13:32,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:13:32,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:13:32,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:13:32,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:13:32,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:13:32,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:13:32,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:13:32,757 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 [2020-09-25 01:13:32,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:13:32,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:13:32,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:13:32,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:13:32,812 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:13:32,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:13:32,813 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:13:32,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:13:32,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:13:32,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:13:32,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:13:32,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:13:32,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:13:32,815 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:13:32,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:13:32,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:13:32,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:13:32,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:13:32,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:13:32,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:13:32,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:13:32,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:13:32,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:13:32,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:13:32,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:13:32,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:13:32,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:13:32,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:13:32,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:13:32,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=true; [2020-09-25 01:13:33,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:13:33,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:13:33,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:13:33,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:13:33,333 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:13:33,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 01:13:33,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d9655702/318fc74548204c9d90c3ec511b26d970/FLAG7cf8707cb [2020-09-25 01:13:34,299 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:13:34,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 01:13:34,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d9655702/318fc74548204c9d90c3ec511b26d970/FLAG7cf8707cb [2020-09-25 01:13:34,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d9655702/318fc74548204c9d90c3ec511b26d970 [2020-09-25 01:13:34,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:13:34,437 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:13:34,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:13:34,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:13:34,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:13:34,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:13:34" (1/1) ... [2020-09-25 01:13:34,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e04f8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:34, skipping insertion in model container [2020-09-25 01:13:34,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:13:34" (1/1) ... [2020-09-25 01:13:34,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:13:34,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:13:35,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:13:35,934 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:13:36,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:13:36,495 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:13:36,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:36 WrapperNode [2020-09-25 01:13:36,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:13:36,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:13:36,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:13:36,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:13:36,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:36" (1/1) ... [2020-09-25 01:13:36,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:36" (1/1) ... [2020-09-25 01:13:36,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:36" (1/1) ... [2020-09-25 01:13:36,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:36" (1/1) ... [2020-09-25 01:13:36,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:36" (1/1) ... [2020-09-25 01:13:36,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:36" (1/1) ... [2020-09-25 01:13:36,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:36" (1/1) ... [2020-09-25 01:13:36,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:13:36,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:13:36,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:13:36,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:13:36,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:36" (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 [2020-09-25 01:13:36,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:13:36,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:13:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 01:13:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:13:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:13:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 01:13:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 01:13:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 01:13:36,859 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 01:13:36,859 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 01:13:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 01:13:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 01:13:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 01:13:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 01:13:36,861 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 01:13:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 01:13:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 01:13:36,862 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 01:13:36,863 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 01:13:36,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:13:36,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:13:36,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:13:40,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:13:40,364 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 01:13:40,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:13:40 BoogieIcfgContainer [2020-09-25 01:13:40,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:13:40,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:13:40,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:13:40,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:13:40,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:13:34" (1/3) ... [2020-09-25 01:13:40,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffdf1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:13:40, skipping insertion in model container [2020-09-25 01:13:40,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:36" (2/3) ... [2020-09-25 01:13:40,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffdf1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:13:40, skipping insertion in model container [2020-09-25 01:13:40,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:13:40" (3/3) ... [2020-09-25 01:13:40,394 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 01:13:40,406 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:13:40,422 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:13:40,446 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:13:40,486 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:13:40,486 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:13:40,486 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:13:40,486 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:13:40,486 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:13:40,487 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:13:40,487 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:13:40,487 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:13:40,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states. [2020-09-25 01:13:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2020-09-25 01:13:40,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:13:40,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:13:40,608 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:13:40,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:13:40,620 INFO L82 PathProgramCache]: Analyzing trace with hash -33800225, now seen corresponding path program 1 times [2020-09-25 01:13:40,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:13:40,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116354388] [2020-09-25 01:13:40,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:13:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:42,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:43,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:44,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:45,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:45,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:45,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:46,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:46,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:46,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 924 [2020-09-25 01:13:46,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 01:13:46,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-09-25 01:13:46,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:13:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 390 [2020-09-25 01:13:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 497 [2020-09-25 01:13:46,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:13:48,247 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-09-25 01:13:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:13:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:48,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:48,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:48,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 01:13:48,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:13:48,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 01:13:48,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:48,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:13:48,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:13:48,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:13:48,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:13:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:13:49,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116354388] [2020-09-25 01:13:49,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:13:49,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:13:49,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323325569] [2020-09-25 01:13:49,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:13:49,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:13:49,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:13:49,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:13:49,178 INFO L87 Difference]: Start difference. First operand 1994 states. Second operand 4 states. [2020-09-25 01:13:58,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:13:58,644 INFO L93 Difference]: Finished difference Result 3363 states and 4438 transitions. [2020-09-25 01:13:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:13:58,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 917 [2020-09-25 01:13:58,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:13:58,699 INFO L225 Difference]: With dead ends: 3363 [2020-09-25 01:13:58,700 INFO L226 Difference]: Without dead ends: 2747 [2020-09-25 01:13:58,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:13:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2020-09-25 01:13:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2734. [2020-09-25 01:13:58,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2734 states. [2020-09-25 01:13:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 3423 transitions. [2020-09-25 01:13:58,892 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 3423 transitions. Word has length 917 [2020-09-25 01:13:58,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:13:58,896 INFO L479 AbstractCegarLoop]: Abstraction has 2734 states and 3423 transitions. [2020-09-25 01:13:58,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:13:58,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 3423 transitions. [2020-09-25 01:13:58,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2020-09-25 01:13:58,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:13:58,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:13:58,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:13:58,937 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:13:58,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:13:58,937 INFO L82 PathProgramCache]: Analyzing trace with hash -35077377, now seen corresponding path program 1 times [2020-09-25 01:13:58,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:13:58,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787824121] [2020-09-25 01:13:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:13:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:59,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:00,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:00,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:00,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:01,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:01,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:01,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:02,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:03,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:03,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:04,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:14:04,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 924 [2020-09-25 01:14:04,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 01:14:04,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5207 [2020-09-25 01:14:04,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:14:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:14:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 286 [2020-09-25 01:14:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-09-25 01:14:04,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 01:14:05,760 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-09-25 01:14:05,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:14:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:14:05,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:05,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:14:05,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 01:14:05,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:14:05,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 01:14:05,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:14:05,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:14:05,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:14:05,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:14:05,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:14:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:14:07,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787824121] [2020-09-25 01:14:07,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:14:07,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:14:07,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679923139] [2020-09-25 01:14:07,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:14:07,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:14:07,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:14:07,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:14:07,248 INFO L87 Difference]: Start difference. First operand 2734 states and 3423 transitions. Second operand 5 states. [2020-09-25 01:14:21,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:14:21,765 INFO L93 Difference]: Finished difference Result 7425 states and 9407 transitions. [2020-09-25 01:14:21,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:14:21,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 917 [2020-09-25 01:14:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:14:21,800 INFO L225 Difference]: With dead ends: 7425 [2020-09-25 01:14:21,800 INFO L226 Difference]: Without dead ends: 5048 [2020-09-25 01:14:21,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:14:21,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2020-09-25 01:14:21,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 5046. [2020-09-25 01:14:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5046 states. [2020-09-25 01:14:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5046 states to 5046 states and 6358 transitions. [2020-09-25 01:14:21,978 INFO L78 Accepts]: Start accepts. Automaton has 5046 states and 6358 transitions. Word has length 917 [2020-09-25 01:14:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:14:21,979 INFO L479 AbstractCegarLoop]: Abstraction has 5046 states and 6358 transitions. [2020-09-25 01:14:21,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:14:21,980 INFO L276 IsEmpty]: Start isEmpty. Operand 5046 states and 6358 transitions. [2020-09-25 01:14:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2020-09-25 01:14:21,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:14:21,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:14:21,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:14:21,999 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:14:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:14:22,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1618515806, now seen corresponding path program 1 times [2020-09-25 01:14:22,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:14:22,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185994555] [2020-09-25 01:14:22,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:14:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:14:22,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:22,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:23,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:23,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:24,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:14:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking...