/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=BIGGEST --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.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:02:37,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:02:37,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:02:37,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:02:37,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:02:37,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:02:37,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:02:37,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:02:37,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:02:37,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:02:37,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:02:37,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:02:37,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:02:37,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:02:37,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:02:37,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:02:37,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:02:37,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:02:37,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:02:37,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:02:37,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:02:37,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:02:37,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:02:37,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:02:37,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:02:37,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:02:37,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:02:37,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:02:37,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:02:37,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:02:37,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:02:37,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:02:37,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:02:37,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:02:37,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:02:37,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:02:37,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:02:37,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:02:37,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:02:37,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:02:37,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:02:37,895 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 [2020-10-12 20:02:37,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:02:37,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:02:37,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:02:37,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:02:37,919 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:02:37,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:02:37,920 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:02:37,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:02:37,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:02:37,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:02:37,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:02:37,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:02:37,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:02:37,921 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:02:37,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:02:37,921 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:02:37,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:02:37,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:02:37,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:02:37,922 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:02:37,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:02:37,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:02:37,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:02:37,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:02:37,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:02:37,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:02:37,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:02:37,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:02:37,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:02:37,924 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:02:38,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:02:38,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:02:38,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:02:38,207 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:02:38,208 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:02:38,208 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 20:02:38,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e37e1f03a/0bdb2276a56c47178452cd1579cd182c/FLAGc30dfc0e7 [2020-10-12 20:02:38,974 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:02:38,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 20:02:39,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e37e1f03a/0bdb2276a56c47178452cd1579cd182c/FLAGc30dfc0e7 [2020-10-12 20:02:39,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e37e1f03a/0bdb2276a56c47178452cd1579cd182c [2020-10-12 20:02:39,138 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:02:39,140 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:02:39,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:02:39,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:02:39,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:02:39,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:02:39" (1/1) ... [2020-10-12 20:02:39,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156d188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:02:39, skipping insertion in model container [2020-10-12 20:02:39,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:02:39" (1/1) ... [2020-10-12 20:02:39,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:02:39,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:02:40,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:02:40,768 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:02:41,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:02:41,407 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:02:41,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:02:41 WrapperNode [2020-10-12 20:02:41,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:02:41,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:02:41,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:02:41,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:02:41,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:02:41" (1/1) ... [2020-10-12 20:02:41,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:02:41" (1/1) ... [2020-10-12 20:02:41,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:02:41" (1/1) ... [2020-10-12 20:02:41,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:02:41" (1/1) ... [2020-10-12 20:02:41,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:02:41" (1/1) ... [2020-10-12 20:02:41,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:02:41" (1/1) ... [2020-10-12 20:02:41,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:02:41" (1/1) ... [2020-10-12 20:02:41,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:02:41,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:02:41,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:02:41,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:02:41,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:02:41" (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 [2020-10-12 20:02:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:02:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:02:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:02:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:02:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:02:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:02:41,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:02:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:02:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:02:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:02:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:02:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:02:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:02:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:02:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:02:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:02:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:02:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:02:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:02:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:02:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:02:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:02:46,504 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:02:46,505 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:02:46,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:02:46 BoogieIcfgContainer [2020-10-12 20:02:46,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:02:46,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:02:46,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:02:46,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:02:46,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:02:39" (1/3) ... [2020-10-12 20:02:46,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be3bab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:02:46, skipping insertion in model container [2020-10-12 20:02:46,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:02:41" (2/3) ... [2020-10-12 20:02:46,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be3bab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:02:46, skipping insertion in model container [2020-10-12 20:02:46,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:02:46" (3/3) ... [2020-10-12 20:02:46,530 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 20:02:46,546 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:02:46,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-12 20:02:46,581 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-12 20:02:46,626 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:02:46,626 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:02:46,626 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:02:46,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:02:46,627 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:02:46,627 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:02:46,627 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:02:46,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:02:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states. [2020-10-12 20:02:46,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:02:46,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:02:46,715 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] [2020-10-12 20:02:46,716 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:02:46,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:02:46,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1445262440, now seen corresponding path program 1 times [2020-10-12 20:02:46,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:02:46,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351782820] [2020-10-12 20:02:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:02:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:47,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:47,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:48,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:50,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:51,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:51,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:51,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:52,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:52,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:52,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:02:52,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:02:52,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:02:52,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:52,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 20:02:52,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:02:52,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 20:02:52,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:02:53,472 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2020-10-12 20:02:53,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:02:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:53,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:53,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:02:53,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:02:53,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 20:02:53,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:53,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:02:53,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:02:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:02:53,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:02:53,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351782820] [2020-10-12 20:02:53,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:02:53,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:02:53,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126425405] [2020-10-12 20:02:53,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:02:53,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:02:53,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:02:53,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:02:53,664 INFO L87 Difference]: Start difference. First operand 2034 states. Second operand 12 states. [2020-10-12 20:02:55,541 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 437 DAG size of output: 433 [2020-10-12 20:03:26,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:03:26,583 INFO L93 Difference]: Finished difference Result 4831 states and 8159 transitions. [2020-10-12 20:03:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:03:26,585 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-12 20:03:26,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:03:26,630 INFO L225 Difference]: With dead ends: 4831 [2020-10-12 20:03:26,631 INFO L226 Difference]: Without dead ends: 4670 [2020-10-12 20:03:26,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2020-10-12 20:03:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2020-10-12 20:03:26,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 2027. [2020-10-12 20:03:26,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2027 states. [2020-10-12 20:03:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2683 transitions. [2020-10-12 20:03:26,872 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2683 transitions. Word has length 68 [2020-10-12 20:03:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:03:26,873 INFO L479 AbstractCegarLoop]: Abstraction has 2027 states and 2683 transitions. [2020-10-12 20:03:26,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 20:03:26,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2683 transitions. [2020-10-12 20:03:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:03:26,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:03:26,881 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] [2020-10-12 20:03:26,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:03:26,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:03:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:03:26,882 INFO L82 PathProgramCache]: Analyzing trace with hash 466679568, now seen corresponding path program 1 times [2020-10-12 20:03:26,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:03:26,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119533667] [2020-10-12 20:03:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:03:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:26,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:29,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:29,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:31,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:31,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:31,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:31,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:03:31,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:03:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:03:31,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 20:03:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:03:31,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 20:03:31,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 20:03:33,164 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2020-10-12 20:03:33,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:03:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:03:33,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:03:33,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:03:33,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:03:33,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:03:33,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 20:03:33,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:03:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:03:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:03:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:03:33,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:03:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:03:33,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119533667] [2020-10-12 20:03:33,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:03:33,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 20:03:33,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674888248] [2020-10-12 20:03:33,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 20:03:33,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:03:33,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 20:03:33,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:03:33,405 INFO L87 Difference]: Start difference. First operand 2027 states and 2683 transitions. Second operand 16 states. [2020-10-12 20:03:33,548 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-12 20:03:35,520 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 456 DAG size of output: 447 [2020-10-12 20:03:37,134 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-12 20:04:01,580 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-12 20:04:03,307 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-12 20:04:04,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:04:04,063 INFO L93 Difference]: Finished difference Result 3877 states and 5196 transitions. [2020-10-12 20:04:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 20:04:04,063 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-10-12 20:04:04,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:04:04,082 INFO L225 Difference]: With dead ends: 3877 [2020-10-12 20:04:04,083 INFO L226 Difference]: Without dead ends: 3774 [2020-10-12 20:04:04,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=274, Invalid=986, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 20:04:04,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3774 states. [2020-10-12 20:04:04,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3774 to 2049. [2020-10-12 20:04:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2049 states. [2020-10-12 20:04:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2712 transitions. [2020-10-12 20:04:04,210 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2712 transitions. Word has length 69 [2020-10-12 20:04:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:04:04,210 INFO L479 AbstractCegarLoop]: Abstraction has 2049 states and 2712 transitions. [2020-10-12 20:04:04,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 20:04:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2712 transitions. [2020-10-12 20:04:04,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:04:04,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:04:04,217 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] [2020-10-12 20:04:04,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:04:04,218 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:04:04,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:04:04,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2119624396, now seen corresponding path program 1 times [2020-10-12 20:04:04,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:04:04,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976677950] [2020-10-12 20:04:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:04:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:04,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:04,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:04,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:04,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:05,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:05,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:06,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:09,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:09,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:09,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:04:09,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:04:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:04:09,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 20:04:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:04:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:04:09,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:04:10,323 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2020-10-12 20:04:10,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:04:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:10,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:10,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:04:10,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:04:10,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 20:04:10,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:10,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:04:10,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:04:10,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:04:10,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:04:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:04:10,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976677950] [2020-10-12 20:04:10,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:04:10,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:04:10,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182455297] [2020-10-12 20:04:10,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:04:10,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:04:10,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:04:10,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:04:10,430 INFO L87 Difference]: Start difference. First operand 2049 states and 2712 transitions. Second operand 12 states. [2020-10-12 20:04:11,320 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 423 [2020-10-12 20:04:34,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:04:34,586 INFO L93 Difference]: Finished difference Result 6416 states and 8920 transitions. [2020-10-12 20:04:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-12 20:04:34,586 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-12 20:04:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:04:34,609 INFO L225 Difference]: With dead ends: 6416 [2020-10-12 20:04:34,609 INFO L226 Difference]: Without dead ends: 4786 [2020-10-12 20:04:34,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=692, Invalid=2730, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 20:04:34,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states. [2020-10-12 20:04:34,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 3408. [2020-10-12 20:04:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2020-10-12 20:04:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 4629 transitions. [2020-10-12 20:04:34,900 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 4629 transitions. Word has length 69 [2020-10-12 20:04:34,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:04:34,900 INFO L479 AbstractCegarLoop]: Abstraction has 3408 states and 4629 transitions. [2020-10-12 20:04:34,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 20:04:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 4629 transitions. [2020-10-12 20:04:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:04:34,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:04:34,912 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] [2020-10-12 20:04:34,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:04:34,915 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:04:34,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:04:34,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1666988499, now seen corresponding path program 1 times [2020-10-12 20:04:34,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:04:34,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714044944] [2020-10-12 20:04:34,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:04:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:35,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:35,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:35,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:35,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:35,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:36,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:37,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:37,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:37,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:38,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:39,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:40,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:40,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:04:40,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:04:40,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 20:04:40,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 20:04:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:04:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:04:40,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:04:41,414 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-12 20:04:41,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:04:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:41,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:41,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:04:41,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:04:41,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 20:04:41,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:04:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:04:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:04:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:04:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:04:41,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714044944] [2020-10-12 20:04:41,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:04:41,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:04:41,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926900953] [2020-10-12 20:04:41,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:04:41,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:04:41,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:04:41,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:04:41,538 INFO L87 Difference]: Start difference. First operand 3408 states and 4629 transitions. Second operand 12 states. [2020-10-12 20:04:42,513 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification that was a NOOP. DAG size: 423 [2020-10-12 20:05:03,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:03,914 INFO L93 Difference]: Finished difference Result 21006 states and 31792 transitions. [2020-10-12 20:05:03,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-12 20:05:03,917 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-12 20:05:03,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:03,998 INFO L225 Difference]: With dead ends: 21006 [2020-10-12 20:05:03,998 INFO L226 Difference]: Without dead ends: 19400 [2020-10-12 20:05:04,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=992, Invalid=3978, Unknown=0, NotChecked=0, Total=4970 [2020-10-12 20:05:04,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19400 states. [2020-10-12 20:05:05,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19400 to 8892. [2020-10-12 20:05:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8892 states. [2020-10-12 20:05:05,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8892 states to 8892 states and 13181 transitions. [2020-10-12 20:05:05,084 INFO L78 Accepts]: Start accepts. Automaton has 8892 states and 13181 transitions. Word has length 69 [2020-10-12 20:05:05,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:05,084 INFO L479 AbstractCegarLoop]: Abstraction has 8892 states and 13181 transitions. [2020-10-12 20:05:05,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 20:05:05,084 INFO L276 IsEmpty]: Start isEmpty. Operand 8892 states and 13181 transitions. [2020-10-12 20:05:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:05:05,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:05,092 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] [2020-10-12 20:05:05,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:05:05,093 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:05,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:05,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1448259893, now seen corresponding path program 1 times [2020-10-12 20:05:05,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:05,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5234532] [2020-10-12 20:05:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:05,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:06,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:06,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:06,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:06,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:08,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:08,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:10,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:10,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:05:10,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:05:10,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:05:10,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 20:05:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:05:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 20:05:10,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:11,424 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2020-10-12 20:05:11,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:11,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:11,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:11,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:11,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:11,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:05:11,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:11,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:05:11,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:11,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:05:11,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:05:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:05:11,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5234532] [2020-10-12 20:05:11,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:11,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 20:05:11,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432001464] [2020-10-12 20:05:11,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 20:05:11,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:11,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 20:05:11,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:05:11,475 INFO L87 Difference]: Start difference. First operand 8892 states and 13181 transitions. Second operand 13 states. [2020-10-12 20:05:12,392 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 426 [2020-10-12 20:05:14,161 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-12 20:05:18,263 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-12 20:05:19,190 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-12 20:05:22,919 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-12 20:05:28,609 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-12 20:05:30,579 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-12 20:05:35,583 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-12 20:05:36,336 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-12 20:05:38,484 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-12 20:05:39,093 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-12 20:05:57,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:57,067 INFO L93 Difference]: Finished difference Result 117011 states and 179883 transitions. [2020-10-12 20:05:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-10-12 20:05:57,068 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-12 20:05:57,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:57,616 INFO L225 Difference]: With dead ends: 117011 [2020-10-12 20:05:57,616 INFO L226 Difference]: Without dead ends: 110896 [2020-10-12 20:05:57,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4263 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1593, Invalid=9119, Unknown=0, NotChecked=0, Total=10712 [2020-10-12 20:05:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110896 states. [2020-10-12 20:06:00,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110896 to 21248. [2020-10-12 20:06:00,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21248 states. [2020-10-12 20:06:00,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21248 states to 21248 states and 31814 transitions. [2020-10-12 20:06:00,944 INFO L78 Accepts]: Start accepts. Automaton has 21248 states and 31814 transitions. Word has length 69 [2020-10-12 20:06:00,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:00,944 INFO L479 AbstractCegarLoop]: Abstraction has 21248 states and 31814 transitions. [2020-10-12 20:06:00,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 20:06:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 21248 states and 31814 transitions. [2020-10-12 20:06:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:06:00,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:00,959 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] [2020-10-12 20:06:00,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:06:00,959 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:00,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:00,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1272083942, now seen corresponding path program 1 times [2020-10-12 20:06:00,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:00,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139957254] [2020-10-12 20:06:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:01,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:01,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:01,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:03,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:03,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:05,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:05,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:05,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:06,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:06,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:06:06,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:06:06,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:06:06,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 20:06:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:06:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 20:06:06,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:07,322 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-12 20:06:07,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:07,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:07,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:07,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:07,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:07,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:06:07,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:07,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:07,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:07,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:06:07,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139957254] [2020-10-12 20:06:07,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:07,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 20:06:07,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688894938] [2020-10-12 20:06:07,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 20:06:07,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:07,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 20:06:07,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:06:07,381 INFO L87 Difference]: Start difference. First operand 21248 states and 31814 transitions. Second operand 13 states. [2020-10-12 20:06:08,351 WARN L193 SmtUtils]: Spent 876.00 ms on a formula simplification that was a NOOP. DAG size: 426