/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.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:12:01,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:12:01,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:12:01,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:12:01,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:12:01,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:12:01,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:12:01,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:12:01,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:12:01,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:12:01,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:12:01,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:12:01,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:12:01,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:12:01,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:12:01,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:12:01,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:12:01,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:12:01,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:12:01,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:12:01,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:12:01,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:12:01,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:12:01,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:12:01,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:12:01,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:12:01,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:12:01,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:12:01,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:12:01,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:12:01,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:12:01,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:12:01,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:12:01,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:12:01,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:12:01,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:12:01,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:12:01,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:12:01,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:12:01,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:12:01,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:12:01,836 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 20:12:01,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:12:01,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:12:01,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:12:01,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:12:01,876 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:12:01,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:12:01,877 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:12:01,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:12:01,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:12:01,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:12:01,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:12:01,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:12:01,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:12:01,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:12:01,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:12:01,879 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:12:01,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:12:01,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:12:01,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:12:01,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:12:01,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:12:01,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:12:01,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:12:01,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:12:01,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:12:01,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:12:01,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:12:01,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:12:01,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:12:01,882 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 20:12:02,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:12:02,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:12:02,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:12:02,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:12:02,189 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:12:02,190 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-12 20:12:02,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bc43942e/2bd4daad35654ef98edf5bee4a517d82/FLAG7b752de42 [2020-10-12 20:12:02,751 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:12:02,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-12 20:12:02,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bc43942e/2bd4daad35654ef98edf5bee4a517d82/FLAG7b752de42 [2020-10-12 20:12:03,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bc43942e/2bd4daad35654ef98edf5bee4a517d82 [2020-10-12 20:12:03,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:12:03,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:12:03,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:12:03,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:12:03,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:12:03,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:12:03" (1/1) ... [2020-10-12 20:12:03,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6833dace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:03, skipping insertion in model container [2020-10-12 20:12:03,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:12:03" (1/1) ... [2020-10-12 20:12:03,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:12:03,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:12:03,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:12:03,573 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:12:03,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:12:03,810 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:12:03,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:03 WrapperNode [2020-10-12 20:12:03,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:12:03,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:12:03,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:12:03,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:12:03,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:03" (1/1) ... [2020-10-12 20:12:03,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:03" (1/1) ... [2020-10-12 20:12:03,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:03" (1/1) ... [2020-10-12 20:12:03,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:03" (1/1) ... [2020-10-12 20:12:03,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:03" (1/1) ... [2020-10-12 20:12:03,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:03" (1/1) ... [2020-10-12 20:12:03,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:03" (1/1) ... [2020-10-12 20:12:03,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:12:03,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:12:03,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:12:03,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:12:03,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:03" (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 20:12:03,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:12:03,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:12:03,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:12:03,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:12:03,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:12:03,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:12:03,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:12:03,975 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:12:03,975 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:12:03,975 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:12:03,975 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:12:03,976 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:12:03,976 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:12:03,976 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:12:03,976 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:12:03,977 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:12:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:12:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 20:12:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:12:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:12:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:12:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:12:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:12:04,991 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:12:04,991 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:12:04,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:12:04 BoogieIcfgContainer [2020-10-12 20:12:04,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:12:04,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:12:04,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:12:05,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:12:05,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:12:03" (1/3) ... [2020-10-12 20:12:05,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f547f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:12:05, skipping insertion in model container [2020-10-12 20:12:05,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:03" (2/3) ... [2020-10-12 20:12:05,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f547f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:12:05, skipping insertion in model container [2020-10-12 20:12:05,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:12:04" (3/3) ... [2020-10-12 20:12:05,006 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-12 20:12:05,017 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:12:05,025 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:12:05,039 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:12:05,065 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:12:05,066 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:12:05,066 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:12:05,066 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:12:05,066 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:12:05,067 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:12:05,067 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:12:05,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:12:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2020-10-12 20:12:05,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 20:12:05,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:05,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:05,108 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:05,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:05,114 INFO L82 PathProgramCache]: Analyzing trace with hash 534685997, now seen corresponding path program 1 times [2020-10-12 20:12:05,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:05,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401285889] [2020-10-12 20:12:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:05,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:06,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:10,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:10,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 20:12:10,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:12:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 20:12:10,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:10,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:12:10,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:12:10,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 20:12:10,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:12:11,182 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:12:11,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:11,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:11,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:11,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:11,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:11,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:12:11,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:11,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:12:11,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:12:11,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 39 [2020-10-12 20:12:11,312 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 20:12:11,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401285889] [2020-10-12 20:12:11,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:11,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:12:11,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403701446] [2020-10-12 20:12:11,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:12:11,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:11,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:12:11,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:11,344 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 9 states. [2020-10-12 20:12:11,744 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 20:12:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:13,638 INFO L93 Difference]: Finished difference Result 1132 states and 1829 transitions. [2020-10-12 20:12:13,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:12:13,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-12 20:12:13,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:13,668 INFO L225 Difference]: With dead ends: 1132 [2020-10-12 20:12:13,669 INFO L226 Difference]: Without dead ends: 988 [2020-10-12 20:12:13,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:12:13,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2020-10-12 20:12:13,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 386. [2020-10-12 20:12:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-12 20:12:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 575 transitions. [2020-10-12 20:12:13,777 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 575 transitions. Word has length 100 [2020-10-12 20:12:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:13,778 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 575 transitions. [2020-10-12 20:12:13,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:12:13,778 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 575 transitions. [2020-10-12 20:12:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:12:13,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:13,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:13,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:12:13,784 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:13,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:13,784 INFO L82 PathProgramCache]: Analyzing trace with hash -927897771, now seen corresponding path program 1 times [2020-10-12 20:12:13,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:13,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120304844] [2020-10-12 20:12:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:13,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:14,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:15,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:15,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:12:15,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:12:15,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1505 [2020-10-12 20:12:15,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:12:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 20:12:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 20:12:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:15,730 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:12:15,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:15,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:15,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:15,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:15,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:12:15,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:12:15,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:12:15,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 20:12:15,874 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 20:12:15,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120304844] [2020-10-12 20:12:15,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:15,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:12:15,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411611872] [2020-10-12 20:12:15,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:12:15,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:15,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:12:15,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:15,879 INFO L87 Difference]: Start difference. First operand 386 states and 575 transitions. Second operand 9 states. [2020-10-12 20:12:19,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:19,260 INFO L93 Difference]: Finished difference Result 1913 states and 2959 transitions. [2020-10-12 20:12:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:12:19,261 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-12 20:12:19,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:19,275 INFO L225 Difference]: With dead ends: 1913 [2020-10-12 20:12:19,275 INFO L226 Difference]: Without dead ends: 1627 [2020-10-12 20:12:19,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-10-12 20:12:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1617. [2020-10-12 20:12:19,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1617 states. [2020-10-12 20:12:19,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2494 transitions. [2020-10-12 20:12:19,413 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2494 transitions. Word has length 101 [2020-10-12 20:12:19,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:19,413 INFO L479 AbstractCegarLoop]: Abstraction has 1617 states and 2494 transitions. [2020-10-12 20:12:19,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:12:19,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2494 transitions. [2020-10-12 20:12:19,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:12:19,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:19,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:19,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:12:19,419 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:19,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:19,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1284327097, now seen corresponding path program 1 times [2020-10-12 20:12:19,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:19,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992165804] [2020-10-12 20:12:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:20,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:20,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:12:20,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:12:20,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-10-12 20:12:20,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:20,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:12:20,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:12:20,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:12:20,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:20,539 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:12:20,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:20,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:20,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:20,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:20,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:20,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 20:12:20,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:20,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:20,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:12:20,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:20,608 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 20:12:20,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992165804] [2020-10-12 20:12:20,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:20,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:12:20,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30909756] [2020-10-12 20:12:20,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:12:20,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:20,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:12:20,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:12:20,613 INFO L87 Difference]: Start difference. First operand 1617 states and 2494 transitions. Second operand 6 states. [2020-10-12 20:12:20,846 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 20:12:22,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:22,228 INFO L93 Difference]: Finished difference Result 4430 states and 6900 transitions. [2020-10-12 20:12:22,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:12:22,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 20:12:22,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:22,245 INFO L225 Difference]: With dead ends: 4430 [2020-10-12 20:12:22,245 INFO L226 Difference]: Without dead ends: 2881 [2020-10-12 20:12:22,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:22,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-10-12 20:12:22,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2879. [2020-10-12 20:12:22,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2020-10-12 20:12:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 4459 transitions. [2020-10-12 20:12:22,446 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 4459 transitions. Word has length 102 [2020-10-12 20:12:22,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:22,448 INFO L479 AbstractCegarLoop]: Abstraction has 2879 states and 4459 transitions. [2020-10-12 20:12:22,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:12:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 4459 transitions. [2020-10-12 20:12:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:12:22,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:22,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:22,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:12:22,458 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:22,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:22,459 INFO L82 PathProgramCache]: Analyzing trace with hash -15196664, now seen corresponding path program 1 times [2020-10-12 20:12:22,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:22,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51103977] [2020-10-12 20:12:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:22,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:23,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:23,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:12:23,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:12:23,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-10-12 20:12:23,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:12:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:12:23,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 20:12:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 20:12:23,528 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:12:23,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:23,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:23,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:23,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:23,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:23,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 20:12:23,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:12:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:12:23,592 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 20:12:23,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51103977] [2020-10-12 20:12:23,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:23,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:12:23,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419153368] [2020-10-12 20:12:23,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:12:23,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:23,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:12:23,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:12:23,598 INFO L87 Difference]: Start difference. First operand 2879 states and 4459 transitions. Second operand 6 states. [2020-10-12 20:12:23,918 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:12:25,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:25,516 INFO L93 Difference]: Finished difference Result 8049 states and 12548 transitions. [2020-10-12 20:12:25,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:12:25,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 20:12:25,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:25,547 INFO L225 Difference]: With dead ends: 8049 [2020-10-12 20:12:25,547 INFO L226 Difference]: Without dead ends: 5261 [2020-10-12 20:12:25,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:25,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2020-10-12 20:12:26,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5259. [2020-10-12 20:12:26,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5259 states. [2020-10-12 20:12:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 8155 transitions. [2020-10-12 20:12:26,034 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 8155 transitions. Word has length 102 [2020-10-12 20:12:26,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:26,035 INFO L479 AbstractCegarLoop]: Abstraction has 5259 states and 8155 transitions. [2020-10-12 20:12:26,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:12:26,035 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 8155 transitions. [2020-10-12 20:12:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:12:26,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:26,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:26,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:12:26,041 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:26,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:26,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2132752041, now seen corresponding path program 1 times [2020-10-12 20:12:26,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:26,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047528736] [2020-10-12 20:12:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:26,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:26,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:26,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:26,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:12:26,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:12:26,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-12 20:12:26,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:12:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:12:26,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 20:12:26,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:26,957 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:12:26,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:26,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:26,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:26,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:26,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 20:12:26,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:12:27,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:12:27,039 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 20:12:27,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047528736] [2020-10-12 20:12:27,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:27,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:12:27,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468508580] [2020-10-12 20:12:27,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:12:27,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:27,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:12:27,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:12:27,043 INFO L87 Difference]: Start difference. First operand 5259 states and 8155 transitions. Second operand 6 states. [2020-10-12 20:12:27,373 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 20:12:29,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:29,375 INFO L93 Difference]: Finished difference Result 14907 states and 23165 transitions. [2020-10-12 20:12:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:12:29,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 20:12:29,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:29,426 INFO L225 Difference]: With dead ends: 14907 [2020-10-12 20:12:29,427 INFO L226 Difference]: Without dead ends: 9769 [2020-10-12 20:12:29,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:29,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2020-10-12 20:12:30,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2020-10-12 20:12:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9767 states. [2020-10-12 20:12:30,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 15086 transitions. [2020-10-12 20:12:30,153 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 15086 transitions. Word has length 102 [2020-10-12 20:12:30,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:30,154 INFO L479 AbstractCegarLoop]: Abstraction has 9767 states and 15086 transitions. [2020-10-12 20:12:30,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:12:30,154 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 15086 transitions. [2020-10-12 20:12:30,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:12:30,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:30,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:30,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:12:30,162 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:30,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:30,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1644993525, now seen corresponding path program 1 times [2020-10-12 20:12:30,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:30,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752153909] [2020-10-12 20:12:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:30,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:30,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:30,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:30,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:12:30,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:12:30,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-12 20:12:30,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:12:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:12:30,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 20:12:30,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:30,998 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:12:30,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:31,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:31,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:31,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:31,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:31,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 20:12:31,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:31,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:31,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:31,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:12:31,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:31,065 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 20:12:31,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752153909] [2020-10-12 20:12:31,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:31,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:12:31,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677445358] [2020-10-12 20:12:31,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:12:31,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:31,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:12:31,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:12:31,069 INFO L87 Difference]: Start difference. First operand 9767 states and 15086 transitions. Second operand 6 states. [2020-10-12 20:12:31,325 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 20:12:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:34,199 INFO L93 Difference]: Finished difference Result 27817 states and 43050 transitions. [2020-10-12 20:12:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:12:34,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 20:12:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:34,259 INFO L225 Difference]: With dead ends: 27817 [2020-10-12 20:12:34,259 INFO L226 Difference]: Without dead ends: 18249 [2020-10-12 20:12:34,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:12:34,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18249 states. [2020-10-12 20:12:35,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18249 to 18247. [2020-10-12 20:12:35,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18247 states. [2020-10-12 20:12:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18247 states to 18247 states and 28112 transitions. [2020-10-12 20:12:35,677 INFO L78 Accepts]: Start accepts. Automaton has 18247 states and 28112 transitions. Word has length 102 [2020-10-12 20:12:35,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:35,678 INFO L479 AbstractCegarLoop]: Abstraction has 18247 states and 28112 transitions. [2020-10-12 20:12:35,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:12:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 18247 states and 28112 transitions. [2020-10-12 20:12:35,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:12:35,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:35,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:35,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:12:35,688 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:35,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:35,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1542485850, now seen corresponding path program 1 times [2020-10-12 20:12:35,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:35,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108860067] [2020-10-12 20:12:35,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:35,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:35,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:36,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:36,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:12:36,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:12:36,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-10-12 20:12:36,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:12:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:12:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 20:12:36,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:36,604 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:12:36,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:36,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:36,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:36,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:36,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:36,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:12:36,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:36,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:12:36,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:36,673 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 20:12:36,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108860067] [2020-10-12 20:12:36,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:36,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:12:36,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108642424] [2020-10-12 20:12:36,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:12:36,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:36,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:12:36,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:12:36,676 INFO L87 Difference]: Start difference. First operand 18247 states and 28112 transitions. Second operand 6 states. [2020-10-12 20:12:36,891 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 20:12:40,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:40,139 INFO L93 Difference]: Finished difference Result 53258 states and 82023 transitions. [2020-10-12 20:12:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:12:40,139 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 20:12:40,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:40,218 INFO L225 Difference]: With dead ends: 53258 [2020-10-12 20:12:40,218 INFO L226 Difference]: Without dead ends: 35169 [2020-10-12 20:12:40,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:12:40,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35169 states. [2020-10-12 20:12:42,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35169 to 35167. [2020-10-12 20:12:42,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35167 states. [2020-10-12 20:12:42,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35167 states to 35167 states and 53874 transitions. [2020-10-12 20:12:42,490 INFO L78 Accepts]: Start accepts. Automaton has 35167 states and 53874 transitions. Word has length 102 [2020-10-12 20:12:42,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:42,490 INFO L479 AbstractCegarLoop]: Abstraction has 35167 states and 53874 transitions. [2020-10-12 20:12:42,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:12:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 35167 states and 53874 transitions. [2020-10-12 20:12:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:12:42,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:42,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:42,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:12:42,505 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:42,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:42,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1369317135, now seen corresponding path program 1 times [2020-10-12 20:12:42,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:42,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401113012] [2020-10-12 20:12:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:42,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:42,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:43,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:43,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:12:43,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:12:43,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-12 20:12:43,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:12:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:12:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 20:12:43,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:43,295 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:12:43,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:43,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:43,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:43,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:43,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:43,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 20:12:43,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:12:43,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:43,365 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 20:12:43,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401113012] [2020-10-12 20:12:43,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:43,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:12:43,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933474463] [2020-10-12 20:12:43,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:12:43,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:43,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:12:43,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:12:43,375 INFO L87 Difference]: Start difference. First operand 35167 states and 53874 transitions. Second operand 6 states. [2020-10-12 20:12:43,610 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-12 20:12:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:48,212 INFO L93 Difference]: Finished difference Result 104564 states and 160125 transitions. [2020-10-12 20:12:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:12:48,213 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-12 20:12:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:48,378 INFO L225 Difference]: With dead ends: 104564 [2020-10-12 20:12:48,379 INFO L226 Difference]: Without dead ends: 69481 [2020-10-12 20:12:48,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:12:48,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69481 states. [2020-10-12 20:12:53,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69481 to 69479. [2020-10-12 20:12:53,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69479 states. [2020-10-12 20:12:53,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69479 states to 69479 states and 105959 transitions. [2020-10-12 20:12:53,413 INFO L78 Accepts]: Start accepts. Automaton has 69479 states and 105959 transitions. Word has length 103 [2020-10-12 20:12:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:53,413 INFO L479 AbstractCegarLoop]: Abstraction has 69479 states and 105959 transitions. [2020-10-12 20:12:53,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:12:53,413 INFO L276 IsEmpty]: Start isEmpty. Operand 69479 states and 105959 transitions. [2020-10-12 20:12:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:12:53,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:53,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:53,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:12:53,435 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:53,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:53,435 INFO L82 PathProgramCache]: Analyzing trace with hash -561548342, now seen corresponding path program 1 times [2020-10-12 20:12:53,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:53,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212614764] [2020-10-12 20:12:53,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:53,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:53,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:55,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:55,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:12:55,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:12:55,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2499 [2020-10-12 20:12:55,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:55,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:12:55,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:12:55,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 20:12:55,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:56,392 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:12:56,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:56,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:56,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:56,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:56,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:56,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 20:12:56,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:12:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:56,467 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 20:12:56,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212614764] [2020-10-12 20:12:56,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:56,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:12:56,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915163826] [2020-10-12 20:12:56,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:12:56,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:56,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:12:56,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:12:56,469 INFO L87 Difference]: Start difference. First operand 69479 states and 105959 transitions. Second operand 11 states. [2020-10-12 20:12:56,725 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 20:13:17,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:17,460 INFO L93 Difference]: Finished difference Result 355413 states and 540151 transitions. [2020-10-12 20:13:17,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:13:17,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-10-12 20:13:17,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:18,178 INFO L225 Difference]: With dead ends: 355413 [2020-10-12 20:13:18,179 INFO L226 Difference]: Without dead ends: 297257 [2020-10-12 20:13:18,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-12 20:13:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297257 states. [2020-10-12 20:13:24,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297257 to 69760. [2020-10-12 20:13:24,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69760 states. [2020-10-12 20:13:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69760 states to 69760 states and 106324 transitions. [2020-10-12 20:13:24,961 INFO L78 Accepts]: Start accepts. Automaton has 69760 states and 106324 transitions. Word has length 103 [2020-10-12 20:13:24,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:24,961 INFO L479 AbstractCegarLoop]: Abstraction has 69760 states and 106324 transitions. [2020-10-12 20:13:24,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:13:24,962 INFO L276 IsEmpty]: Start isEmpty. Operand 69760 states and 106324 transitions. [2020-10-12 20:13:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:13:24,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:24,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:13:24,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:13:24,980 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:24,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:24,980 INFO L82 PathProgramCache]: Analyzing trace with hash -915234774, now seen corresponding path program 1 times [2020-10-12 20:13:24,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:24,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197856148] [2020-10-12 20:13:24,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:25,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:25,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:25,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:28,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:28,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:13:28,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:13:28,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3841 [2020-10-12 20:13:28,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:13:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:13:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 20:13:28,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:29,202 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:13:29,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:29,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:29,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:29,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:29,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:29,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:13:29,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:29,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:29,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:13:29,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:29,283 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 20:13:29,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197856148] [2020-10-12 20:13:29,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:29,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:13:29,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609611692] [2020-10-12 20:13:29,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:13:29,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:29,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:13:29,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:13:29,285 INFO L87 Difference]: Start difference. First operand 69760 states and 106324 transitions. Second operand 11 states. [2020-10-12 20:13:29,577 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 20:13:53,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:53,291 INFO L93 Difference]: Finished difference Result 301858 states and 456744 transitions. [2020-10-12 20:13:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:13:53,292 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-10-12 20:13:53,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:53,714 INFO L225 Difference]: With dead ends: 301858 [2020-10-12 20:13:53,715 INFO L226 Difference]: Without dead ends: 259428 [2020-10-12 20:13:53,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-12 20:13:53,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259428 states. [2020-10-12 20:14:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259428 to 70365. [2020-10-12 20:14:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70365 states. [2020-10-12 20:14:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70365 states to 70365 states and 107139 transitions. [2020-10-12 20:14:04,155 INFO L78 Accepts]: Start accepts. Automaton has 70365 states and 107139 transitions. Word has length 103 [2020-10-12 20:14:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:14:04,156 INFO L479 AbstractCegarLoop]: Abstraction has 70365 states and 107139 transitions. [2020-10-12 20:14:04,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:14:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 70365 states and 107139 transitions. [2020-10-12 20:14:04,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:14:04,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:14:04,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:14:04,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:14:04,170 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:14:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:14:04,171 INFO L82 PathProgramCache]: Analyzing trace with hash -6452086, now seen corresponding path program 1 times [2020-10-12 20:14:04,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:14:04,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334778726] [2020-10-12 20:14:04,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:14:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:04,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:04,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:04,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:05,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:05,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:14:05,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:14:05,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1126 [2020-10-12 20:14:05,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:05,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:14:05,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:14:05,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 20:14:05,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:05,700 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:14:05,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:14:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:05,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:05,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:14:05,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:14:05,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:14:05,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:05,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:14:05,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:14:05,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:14:05,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:05,775 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 20:14:05,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334778726] [2020-10-12 20:14:05,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:14:05,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:14:05,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511671137] [2020-10-12 20:14:05,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:14:05,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:14:05,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:14:05,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:14:05,778 INFO L87 Difference]: Start difference. First operand 70365 states and 107139 transitions. Second operand 11 states. [2020-10-12 20:14:06,048 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 20:15:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:14,780 INFO L93 Difference]: Finished difference Result 692038 states and 1057435 transitions. [2020-10-12 20:15:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 20:15:14,781 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-10-12 20:15:14,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:16,115 INFO L225 Difference]: With dead ends: 692038 [2020-10-12 20:15:16,115 INFO L226 Difference]: Without dead ends: 655271 [2020-10-12 20:15:16,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=444, Invalid=1626, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 20:15:16,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655271 states. [2020-10-12 20:15:27,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655271 to 71509. [2020-10-12 20:15:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71509 states. [2020-10-12 20:15:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71509 states to 71509 states and 108691 transitions. [2020-10-12 20:15:27,270 INFO L78 Accepts]: Start accepts. Automaton has 71509 states and 108691 transitions. Word has length 103 [2020-10-12 20:15:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:27,270 INFO L479 AbstractCegarLoop]: Abstraction has 71509 states and 108691 transitions. [2020-10-12 20:15:27,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:15:27,270 INFO L276 IsEmpty]: Start isEmpty. Operand 71509 states and 108691 transitions. [2020-10-12 20:15:27,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:15:27,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:27,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:15:27,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:15:27,602 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:27,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:27,603 INFO L82 PathProgramCache]: Analyzing trace with hash -330128054, now seen corresponding path program 1 times [2020-10-12 20:15:27,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:27,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15627863] [2020-10-12 20:15:27,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:27,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:29,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:29,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:15:29,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:15:29,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1502 [2020-10-12 20:15:29,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:29,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:15:29,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:15:29,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 20:15:29,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:29,496 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:15:29,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:29,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:29,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:29,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:29,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:15:29,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:15:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:15:29,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:29,563 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 20:15:29,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15627863] [2020-10-12 20:15:29,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:29,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:15:29,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597121363] [2020-10-12 20:15:29,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:15:29,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:29,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:15:29,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:15:29,565 INFO L87 Difference]: Start difference. First operand 71509 states and 108691 transitions. Second operand 11 states. [2020-10-12 20:15:29,853 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186