/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 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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:54:24,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:54:24,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:54:24,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:54:24,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:54:24,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:54:24,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:54:24,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:54:24,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:54:24,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:54:24,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:54:24,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:54:24,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:54:24,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:54:24,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:54:24,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:54:24,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:54:24,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:54:24,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:54:24,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:54:24,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:54:24,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:54:24,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:54:24,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:54:24,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:54:24,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:54:24,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:54:24,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:54:24,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:54:24,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:54:24,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:54:24,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:54:24,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:54:24,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:54:24,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:54:24,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:54:24,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:54:24,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:54:24,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:54:24,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:54:24,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:54:24,726 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 [2020-10-15 03:54:24,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:54:24,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:54:24,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:54:24,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:54:24,753 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:54:24,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:54:24,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:54:24,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:54:24,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:54:24,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:54:24,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:54:24,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:54:24,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:54:24,755 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:54:24,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:54:24,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:54:24,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:54:24,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:54:24,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:54:24,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:54:24,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:54:24,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:54:24,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:54:24,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:54:24,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:54:24,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:54:24,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:54:24,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:54:24,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:54:24,758 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 -> 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:54:25,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:54:25,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:54:25,163 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:54:25,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:54:25,166 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:54:25,167 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-15 03:54:25,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5006f7623/00e9a471c23f45bbae72875057aa4e5c/FLAG97b705f56 [2020-10-15 03:54:26,219 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:54:26,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-15 03:54:26,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5006f7623/00e9a471c23f45bbae72875057aa4e5c/FLAG97b705f56 [2020-10-15 03:54:26,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5006f7623/00e9a471c23f45bbae72875057aa4e5c [2020-10-15 03:54:26,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:54:26,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:54:26,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:54:26,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:54:26,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:54:26,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:54:26" (1/1) ... [2020-10-15 03:54:26,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a9d3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:26, skipping insertion in model container [2020-10-15 03:54:26,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:54:26" (1/1) ... [2020-10-15 03:54:26,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:54:27,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:54:29,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:54:29,996 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:54:31,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:54:31,861 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:54:31,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:31 WrapperNode [2020-10-15 03:54:31,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:54:31,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:54:31,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:54:31,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:54:31,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:31" (1/1) ... [2020-10-15 03:54:31,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:31" (1/1) ... [2020-10-15 03:54:32,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:31" (1/1) ... [2020-10-15 03:54:32,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:31" (1/1) ... [2020-10-15 03:54:32,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:31" (1/1) ... [2020-10-15 03:54:32,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:31" (1/1) ... [2020-10-15 03:54:32,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:31" (1/1) ... [2020-10-15 03:54:32,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:54:32,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:54:32,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:54:32,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:54:32,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:31" (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 [2020-10-15 03:54:32,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:54:32,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:54:32,670 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:54:32,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:54:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:54:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:54:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:54:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:54:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:54:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:54:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:54:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:54:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:54:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:54:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:54:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:54:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:54:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:54:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:54:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:54:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:54:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:54:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:54:46,093 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:54:46,093 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:54:46,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:54:46 BoogieIcfgContainer [2020-10-15 03:54:46,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:54:46,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:54:46,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:54:46,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:54:46,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:54:26" (1/3) ... [2020-10-15 03:54:46,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c373c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:54:46, skipping insertion in model container [2020-10-15 03:54:46,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:54:31" (2/3) ... [2020-10-15 03:54:46,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c373c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:54:46, skipping insertion in model container [2020-10-15 03:54:46,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:54:46" (3/3) ... [2020-10-15 03:54:46,124 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-15 03:54:46,134 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:54:46,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2020-10-15 03:54:46,160 INFO L251 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2020-10-15 03:54:46,202 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:54:46,202 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:54:46,202 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:54:46,202 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:54:46,202 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:54:46,203 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:54:46,203 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:54:46,203 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:54:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states. [2020-10-15 03:54:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 03:54:46,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:54:46,349 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] [2020-10-15 03:54:46,350 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:54:46,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:54:46,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1648974574, now seen corresponding path program 1 times [2020-10-15 03:54:46,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:54:46,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090732016] [2020-10-15 03:54:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:54:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:47,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:47,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:52,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:52,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 03:54:52,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:54:52,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 03:54:52,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:52,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:54:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-15 03:54:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:54:52,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:54:56,465 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification that was a NOOP. DAG size: 940 [2020-10-15 03:54:56,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:54:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:54:56,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:54:56,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:54:56,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:54:56,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:54:56,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-15 03:54:56,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:54:56,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:54:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:54:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:54:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:54:56,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:54:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:54:56,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090732016] [2020-10-15 03:54:56,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:54:56,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:54:56,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586487826] [2020-10-15 03:54:56,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:54:56,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:54:56,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:54:56,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:54:56,655 INFO L87 Difference]: Start difference. First operand 6188 states. Second operand 6 states. [2020-10-15 03:55:00,215 WARN L193 SmtUtils]: Spent 3.40 s on a formula simplification that was a NOOP. DAG size: 941 [2020-10-15 03:56:11,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:11,759 INFO L93 Difference]: Finished difference Result 8471 states and 14881 transitions. [2020-10-15 03:56:11,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:56:11,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-15 03:56:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:11,822 INFO L225 Difference]: With dead ends: 8471 [2020-10-15 03:56:11,822 INFO L226 Difference]: Without dead ends: 6644 [2020-10-15 03:56:11,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:56:11,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6644 states. [2020-10-15 03:56:12,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6644 to 6388. [2020-10-15 03:56:12,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6388 states. [2020-10-15 03:56:12,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 8462 transitions. [2020-10-15 03:56:12,135 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 8462 transitions. Word has length 81 [2020-10-15 03:56:12,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:12,136 INFO L479 AbstractCegarLoop]: Abstraction has 6388 states and 8462 transitions. [2020-10-15 03:56:12,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:56:12,136 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 8462 transitions. [2020-10-15 03:56:12,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 03:56:12,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:12,155 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] [2020-10-15 03:56:12,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:56:12,156 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:12,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:12,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1770188140, now seen corresponding path program 1 times [2020-10-15 03:56:12,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:12,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382204206] [2020-10-15 03:56:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:12,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:13,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:17,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:17,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 03:56:17,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:56:17,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-15 03:56:17,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:17,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:56:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:56:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 03:56:17,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:21,246 WARN L193 SmtUtils]: Spent 3.48 s on a formula simplification that was a NOOP. DAG size: 940 [2020-10-15 03:56:21,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:21,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:21,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:21,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:21,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:21,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-15 03:56:21,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:21,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:21,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:21,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:56:21,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382204206] [2020-10-15 03:56:21,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:21,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:56:21,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423353295] [2020-10-15 03:56:21,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:56:21,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:21,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:56:21,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:56:21,515 INFO L87 Difference]: Start difference. First operand 6388 states and 8462 transitions. Second operand 8 states. [2020-10-15 03:56:25,357 WARN L193 SmtUtils]: Spent 3.61 s on a formula simplification that was a NOOP. DAG size: 952 [2020-10-15 03:57:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:25,115 INFO L93 Difference]: Finished difference Result 6909 states and 9241 transitions. [2020-10-15 03:57:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:57:25,122 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-15 03:57:25,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:25,155 INFO L225 Difference]: With dead ends: 6909 [2020-10-15 03:57:25,155 INFO L226 Difference]: Without dead ends: 6715 [2020-10-15 03:57:25,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:57:25,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6715 states. [2020-10-15 03:57:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6715 to 6567. [2020-10-15 03:57:25,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6567 states. [2020-10-15 03:57:25,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6567 states to 6567 states and 8746 transitions. [2020-10-15 03:57:25,409 INFO L78 Accepts]: Start accepts. Automaton has 6567 states and 8746 transitions. Word has length 82 [2020-10-15 03:57:25,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:25,411 INFO L479 AbstractCegarLoop]: Abstraction has 6567 states and 8746 transitions. [2020-10-15 03:57:25,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:57:25,412 INFO L276 IsEmpty]: Start isEmpty. Operand 6567 states and 8746 transitions. [2020-10-15 03:57:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 03:57:25,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:25,430 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] [2020-10-15 03:57:25,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:57:25,431 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:25,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:25,431 INFO L82 PathProgramCache]: Analyzing trace with hash 577466158, now seen corresponding path program 1 times [2020-10-15 03:57:25,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:25,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869883916] [2020-10-15 03:57:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:25,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:25,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:26,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:29,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:30,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:30,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 03:57:30,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:57:30,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-15 03:57:30,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:30,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:30,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:57:30,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:57:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 03:57:30,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:57:34,218 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification that was a NOOP. DAG size: 940 [2020-10-15 03:57:34,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:34,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:34,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:34,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:34,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:34,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-15 03:57:34,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:34,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:57:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:57:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:57:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:57:34,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869883916] [2020-10-15 03:57:34,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:34,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:57:34,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97710114] [2020-10-15 03:57:34,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:57:34,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:34,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:57:34,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:57:34,468 INFO L87 Difference]: Start difference. First operand 6567 states and 8746 transitions. Second operand 9 states. [2020-10-15 03:57:38,059 WARN L193 SmtUtils]: Spent 3.38 s on a formula simplification that was a NOOP. DAG size: 944