/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:06:41,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:06:41,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:06:41,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:06:41,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:06:41,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:06:41,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:06:41,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:06:41,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:06:41,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:06:41,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:06:41,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:06:41,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:06:41,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:06:41,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:06:41,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:06:41,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:06:41,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:06:41,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:06:41,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:06:41,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:06:41,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:06:41,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:06:41,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:06:41,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:06:41,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:06:41,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:06:41,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:06:41,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:06:41,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:06:41,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:06:41,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:06:41,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:06:41,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:06:41,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:06:41,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:06:41,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:06:41,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:06:41,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:06:41,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:06:41,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:06:41,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:06:41,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:06:41,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:06:41,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:06:41,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:06:41,888 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:06:41,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:06:41,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:06:41,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:06:41,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:06:41,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:06:41,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:06:41,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:06:41,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:06:41,890 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:06:41,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:06:41,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:06:41,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:06:41,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:06:41,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:06:41,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:06:41,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:06:41,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:06:41,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:06:41,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:06:41,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:06:41,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:06:41,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:06:41,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:06:41,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:06:41,893 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:06:42,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:06:42,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:06:42,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:06:42,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:06:42,484 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:06:42,485 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:06:42,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eaf2b17a/d00ea3e876394012923bd3bb5bebdddd/FLAG0efceee9a [2020-10-15 03:06:43,240 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:06:43,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:06:43,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eaf2b17a/d00ea3e876394012923bd3bb5bebdddd/FLAG0efceee9a [2020-10-15 03:06:43,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eaf2b17a/d00ea3e876394012923bd3bb5bebdddd [2020-10-15 03:06:43,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:06:43,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:06:43,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:06:43,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:06:43,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:06:43,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:43" (1/1) ... [2020-10-15 03:06:43,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1613be08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:43, skipping insertion in model container [2020-10-15 03:06:43,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:43" (1/1) ... [2020-10-15 03:06:43,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:06:43,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:06:44,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:06:44,287 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:06:44,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:06:44,475 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:06:44,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:44 WrapperNode [2020-10-15 03:06:44,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:06:44,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:06:44,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:06:44,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:06:44,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:44" (1/1) ... [2020-10-15 03:06:44,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:44" (1/1) ... [2020-10-15 03:06:44,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:44" (1/1) ... [2020-10-15 03:06:44,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:44" (1/1) ... [2020-10-15 03:06:44,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:44" (1/1) ... [2020-10-15 03:06:44,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:44" (1/1) ... [2020-10-15 03:06:44,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:44" (1/1) ... [2020-10-15 03:06:44,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:06:44,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:06:44,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:06:44,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:06:44,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:06:44,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:06:44,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:06:44,658 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:06:44,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:06:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:06:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:06:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:06:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:06:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:06:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:06:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:06:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:06:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:06:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:06:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:06:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:06:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:06:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:06:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:06:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:06:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:06:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:06:46,666 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:06:46,666 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:06:46,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:46 BoogieIcfgContainer [2020-10-15 03:06:46,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:06:46,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:06:46,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:06:46,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:06:46,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:06:43" (1/3) ... [2020-10-15 03:06:46,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b66c89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:46, skipping insertion in model container [2020-10-15 03:06:46,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:44" (2/3) ... [2020-10-15 03:06:46,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b66c89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:46, skipping insertion in model container [2020-10-15 03:06:46,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:46" (3/3) ... [2020-10-15 03:06:46,690 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:06:46,702 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:06:46,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:06:46,724 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:06:46,751 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:06:46,752 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:06:46,752 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:06:46,752 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:06:46,752 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:06:46,752 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:06:46,752 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:06:46,753 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:06:46,778 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-15 03:06:46,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:06:46,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:46,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:46,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:46,802 INFO L82 PathProgramCache]: Analyzing trace with hash -425912833, now seen corresponding path program 1 times [2020-10-15 03:06:46,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:46,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883402365] [2020-10-15 03:06:46,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:48,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:52,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:52,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:06:52,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:06:52,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-15 03:06:52,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:52,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:06:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 03:06:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:06:52,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-15 03:06:53,297 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:06:53,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:53,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:53,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:53,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:53,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-15 03:06:53,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:53,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:53,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:53,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:53,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:53,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:06:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:06:53,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883402365] [2020-10-15 03:06:53,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:53,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:06:53,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341428814] [2020-10-15 03:06:53,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:06:53,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:53,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:06:53,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:06:53,490 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 4 states. [2020-10-15 03:06:54,387 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-15 03:06:57,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:57,063 INFO L93 Difference]: Finished difference Result 598 states and 1032 transitions. [2020-10-15 03:06:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:06:57,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-10-15 03:06:57,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:57,105 INFO L225 Difference]: With dead ends: 598 [2020-10-15 03:06:57,106 INFO L226 Difference]: Without dead ends: 452 [2020-10-15 03:06:57,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:06:57,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-15 03:06:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 449. [2020-10-15 03:06:57,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-10-15 03:06:57,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 746 transitions. [2020-10-15 03:06:57,257 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 746 transitions. Word has length 114 [2020-10-15 03:06:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:57,259 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 746 transitions. [2020-10-15 03:06:57,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:06:57,259 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 746 transitions. [2020-10-15 03:06:57,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 03:06:57,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:57,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:57,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:06:57,274 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:57,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:57,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2071102825, now seen corresponding path program 1 times [2020-10-15 03:06:57,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:57,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029543528] [2020-10-15 03:06:57,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:57,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:57,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:57,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:58,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:02,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:02,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 03:07:02,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:07:02,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:07:02,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:02,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 03:07:02,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:03,046 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:07:03,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:03,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:03,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:03,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:03,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:03,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:07:03,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:03,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:03,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:03,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:03,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:03,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:03,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029543528] [2020-10-15 03:07:03,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:03,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:03,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655195577] [2020-10-15 03:07:03,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:03,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:03,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:03,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:03,218 INFO L87 Difference]: Start difference. First operand 449 states and 746 transitions. Second operand 5 states. [2020-10-15 03:07:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:06,581 INFO L93 Difference]: Finished difference Result 1241 states and 2054 transitions. [2020-10-15 03:07:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:06,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-15 03:07:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:06,591 INFO L225 Difference]: With dead ends: 1241 [2020-10-15 03:07:06,591 INFO L226 Difference]: Without dead ends: 857 [2020-10-15 03:07:06,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:06,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2020-10-15 03:07:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 855. [2020-10-15 03:07:06,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-10-15 03:07:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1415 transitions. [2020-10-15 03:07:06,682 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1415 transitions. Word has length 117 [2020-10-15 03:07:06,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:06,685 INFO L479 AbstractCegarLoop]: Abstraction has 855 states and 1415 transitions. [2020-10-15 03:07:06,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:06,686 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1415 transitions. [2020-10-15 03:07:06,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:07:06,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:06,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:06,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:07:06,694 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:06,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:06,695 INFO L82 PathProgramCache]: Analyzing trace with hash -310264089, now seen corresponding path program 1 times [2020-10-15 03:07:06,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:06,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649109700] [2020-10-15 03:07:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:06,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:06,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:07,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:07,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:07,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:08,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:08,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:11,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:11,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:07:11,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:07:11,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 03:07:11,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:11,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:11,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-15 03:07:11,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:07:12,358 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:07:12,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:12,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:12,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:12,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:12,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:12,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 03:07:12,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:12,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:12,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:12,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:07:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:12,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649109700] [2020-10-15 03:07:12,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:12,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:12,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135189479] [2020-10-15 03:07:12,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:12,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:12,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:12,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:12,505 INFO L87 Difference]: Start difference. First operand 855 states and 1415 transitions. Second operand 5 states. [2020-10-15 03:07:15,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:15,266 INFO L93 Difference]: Finished difference Result 2458 states and 4060 transitions. [2020-10-15 03:07:15,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:15,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-15 03:07:15,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:15,280 INFO L225 Difference]: With dead ends: 2458 [2020-10-15 03:07:15,280 INFO L226 Difference]: Without dead ends: 1656 [2020-10-15 03:07:15,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:15,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2020-10-15 03:07:15,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1654. [2020-10-15 03:07:15,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1654 states. [2020-10-15 03:07:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2717 transitions. [2020-10-15 03:07:15,415 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2717 transitions. Word has length 119 [2020-10-15 03:07:15,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:15,416 INFO L479 AbstractCegarLoop]: Abstraction has 1654 states and 2717 transitions. [2020-10-15 03:07:15,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:15,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2717 transitions. [2020-10-15 03:07:15,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:07:15,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:15,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:15,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:07:15,422 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:15,422 INFO L82 PathProgramCache]: Analyzing trace with hash -954386151, now seen corresponding path program 1 times [2020-10-15 03:07:15,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:15,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379047513] [2020-10-15 03:07:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:15,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:15,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:15,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:16,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:17,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:17,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:17,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:20,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:20,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:07:20,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:07:20,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:07:20,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:20,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:20,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:20,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:20,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 03:07:20,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:21,336 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:07:21,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:21,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:21,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:21,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:21,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:21,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:07:21,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:21,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:21,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:21,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:07:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:21,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379047513] [2020-10-15 03:07:21,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:21,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:21,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131641861] [2020-10-15 03:07:21,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:21,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:21,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:21,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:21,487 INFO L87 Difference]: Start difference. First operand 1654 states and 2717 transitions. Second operand 5 states. [2020-10-15 03:07:24,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:24,982 INFO L93 Difference]: Finished difference Result 4842 states and 7950 transitions. [2020-10-15 03:07:24,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:24,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-15 03:07:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:25,002 INFO L225 Difference]: With dead ends: 4842 [2020-10-15 03:07:25,002 INFO L226 Difference]: Without dead ends: 3247 [2020-10-15 03:07:25,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:25,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2020-10-15 03:07:25,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 3245. [2020-10-15 03:07:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3245 states. [2020-10-15 03:07:25,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3245 states to 3245 states and 5312 transitions. [2020-10-15 03:07:25,262 INFO L78 Accepts]: Start accepts. Automaton has 3245 states and 5312 transitions. Word has length 119 [2020-10-15 03:07:25,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:25,263 INFO L479 AbstractCegarLoop]: Abstraction has 3245 states and 5312 transitions. [2020-10-15 03:07:25,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:25,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3245 states and 5312 transitions. [2020-10-15 03:07:25,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:07:25,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:25,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:25,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:07:25,271 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:25,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:25,271 INFO L82 PathProgramCache]: Analyzing trace with hash -464488054, now seen corresponding path program 1 times [2020-10-15 03:07:25,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:25,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504482637] [2020-10-15 03:07:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:25,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:25,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:25,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:25,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:28,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:30,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:30,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:07:30,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:07:30,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-15 03:07:30,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:30,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:30,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:30,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 03:07:30,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:30,925 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:07:30,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:30,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:30,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:30,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:30,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:30,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:07:30,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:30,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:30,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:30,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:07:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:31,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504482637] [2020-10-15 03:07:31,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:31,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:31,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042526694] [2020-10-15 03:07:31,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:31,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:31,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:31,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:31,009 INFO L87 Difference]: Start difference. First operand 3245 states and 5312 transitions. Second operand 5 states. [2020-10-15 03:07:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:33,732 INFO L93 Difference]: Finished difference Result 9507 states and 15555 transitions. [2020-10-15 03:07:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:33,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 03:07:33,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:33,768 INFO L225 Difference]: With dead ends: 9507 [2020-10-15 03:07:33,768 INFO L226 Difference]: Without dead ends: 6347 [2020-10-15 03:07:33,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:33,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6347 states. [2020-10-15 03:07:34,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6347 to 6345. [2020-10-15 03:07:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6345 states. [2020-10-15 03:07:34,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6345 states to 6345 states and 10335 transitions. [2020-10-15 03:07:34,369 INFO L78 Accepts]: Start accepts. Automaton has 6345 states and 10335 transitions. Word has length 120 [2020-10-15 03:07:34,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:34,370 INFO L479 AbstractCegarLoop]: Abstraction has 6345 states and 10335 transitions. [2020-10-15 03:07:34,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:34,370 INFO L276 IsEmpty]: Start isEmpty. Operand 6345 states and 10335 transitions. [2020-10-15 03:07:34,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:07:34,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:34,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:34,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:07:34,389 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:34,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:34,390 INFO L82 PathProgramCache]: Analyzing trace with hash 194156870, now seen corresponding path program 1 times [2020-10-15 03:07:34,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:34,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428233914] [2020-10-15 03:07:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:34,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:34,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:34,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:36,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:39,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:39,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:07:39,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:07:39,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:07:39,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:39,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 03:07:39,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:07:40,042 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:07:40,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:40,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:40,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:40,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:40,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:40,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:07:40,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:40,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:07:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:40,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428233914] [2020-10-15 03:07:40,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:40,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:40,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163730596] [2020-10-15 03:07:40,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:40,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:40,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:40,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:40,122 INFO L87 Difference]: Start difference. First operand 6345 states and 10335 transitions. Second operand 5 states. [2020-10-15 03:07:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:43,324 INFO L93 Difference]: Finished difference Result 18371 states and 29866 transitions. [2020-10-15 03:07:43,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:43,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-15 03:07:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:43,375 INFO L225 Difference]: With dead ends: 18371 [2020-10-15 03:07:43,375 INFO L226 Difference]: Without dead ends: 12345 [2020-10-15 03:07:43,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12345 states. [2020-10-15 03:07:44,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12345 to 12343. [2020-10-15 03:07:44,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12343 states. [2020-10-15 03:07:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12343 states to 12343 states and 19944 transitions. [2020-10-15 03:07:44,423 INFO L78 Accepts]: Start accepts. Automaton has 12343 states and 19944 transitions. Word has length 121 [2020-10-15 03:07:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:44,423 INFO L479 AbstractCegarLoop]: Abstraction has 12343 states and 19944 transitions. [2020-10-15 03:07:44,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 12343 states and 19944 transitions. [2020-10-15 03:07:44,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:07:44,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:44,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:44,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:07:44,445 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:44,446 INFO L82 PathProgramCache]: Analyzing trace with hash 724475171, now seen corresponding path program 1 times [2020-10-15 03:07:44,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:44,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492020770] [2020-10-15 03:07:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:44,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:44,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:44,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:44,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:45,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:49,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:49,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:07:49,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:07:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:07:49,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:49,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 03:07:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:07:50,058 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:07:50,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:50,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:50,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:50,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:50,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:50,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:07:50,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:50,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:50,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:07:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:50,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492020770] [2020-10-15 03:07:50,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:50,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:50,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809998732] [2020-10-15 03:07:50,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:50,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:50,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:50,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:50,132 INFO L87 Difference]: Start difference. First operand 12343 states and 19944 transitions. Second operand 5 states. [2020-10-15 03:07:54,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:54,333 INFO L93 Difference]: Finished difference Result 35171 states and 56733 transitions. [2020-10-15 03:07:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:54,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-15 03:07:54,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:54,394 INFO L225 Difference]: With dead ends: 35171 [2020-10-15 03:07:54,395 INFO L226 Difference]: Without dead ends: 24097 [2020-10-15 03:07:54,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:54,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24097 states. [2020-10-15 03:07:56,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24097 to 24095. [2020-10-15 03:07:56,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24095 states. [2020-10-15 03:07:57,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24095 states to 24095 states and 38747 transitions. [2020-10-15 03:07:57,031 INFO L78 Accepts]: Start accepts. Automaton has 24095 states and 38747 transitions. Word has length 121 [2020-10-15 03:07:57,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:57,032 INFO L479 AbstractCegarLoop]: Abstraction has 24095 states and 38747 transitions. [2020-10-15 03:07:57,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:57,032 INFO L276 IsEmpty]: Start isEmpty. Operand 24095 states and 38747 transitions. [2020-10-15 03:07:57,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 03:07:57,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:57,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:57,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:07:57,067 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:57,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:57,068 INFO L82 PathProgramCache]: Analyzing trace with hash -991541821, now seen corresponding path program 1 times [2020-10-15 03:07:57,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:57,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543945498] [2020-10-15 03:07:57,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:57,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:57,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:57,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:57,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:02,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:02,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 03:08:02,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:08:02,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-15 03:08:02,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:02,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:02,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:08:02,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:08:02,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-15 03:08:02,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:02,704 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:08:02,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:02,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:02,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:02,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:02,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:02,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:08:02,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:02,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:08:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:08:02,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:02,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:02,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543945498] [2020-10-15 03:08:02,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:02,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:08:02,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740068107] [2020-10-15 03:08:02,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:08:02,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:02,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:08:02,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:08:02,782 INFO L87 Difference]: Start difference. First operand 24095 states and 38747 transitions. Second operand 8 states. [2020-10-15 03:08:03,307 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-15 03:08:09,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:09,221 INFO L93 Difference]: Finished difference Result 49639 states and 80889 transitions. [2020-10-15 03:08:09,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:08:09,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-15 03:08:09,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:09,294 INFO L225 Difference]: With dead ends: 49639 [2020-10-15 03:08:09,294 INFO L226 Difference]: Without dead ends: 36441 [2020-10-15 03:08:09,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:08:09,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36441 states. [2020-10-15 03:08:12,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36441 to 27871. [2020-10-15 03:08:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27871 states. [2020-10-15 03:08:12,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27871 states to 27871 states and 44731 transitions. [2020-10-15 03:08:12,394 INFO L78 Accepts]: Start accepts. Automaton has 27871 states and 44731 transitions. Word has length 122 [2020-10-15 03:08:12,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:12,394 INFO L479 AbstractCegarLoop]: Abstraction has 27871 states and 44731 transitions. [2020-10-15 03:08:12,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:08:12,394 INFO L276 IsEmpty]: Start isEmpty. Operand 27871 states and 44731 transitions. [2020-10-15 03:08:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 03:08:12,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:12,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:08:12,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:08:12,420 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:12,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:12,421 INFO L82 PathProgramCache]: Analyzing trace with hash 832049319, now seen corresponding path program 1 times [2020-10-15 03:08:12,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:12,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112665033] [2020-10-15 03:08:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:12,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:12,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:13,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:13,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:17,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:17,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 03:08:17,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:08:17,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4603 [2020-10-15 03:08:17,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:17,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:17,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:08:17,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 03:08:17,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:08:17,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:08:17,536 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:08:17,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:17,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:17,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:17,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:17,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:17,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:08:17,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:17,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:17,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:17,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:17,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:17,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:17,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112665033] [2020-10-15 03:08:17,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:17,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:08:17,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497937143] [2020-10-15 03:08:17,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:08:17,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:17,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:08:17,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:08:17,592 INFO L87 Difference]: Start difference. First operand 27871 states and 44731 transitions. Second operand 4 states. [2020-10-15 03:08:18,254 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-15 03:08:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:23,880 INFO L93 Difference]: Finished difference Result 55651 states and 90557 transitions. [2020-10-15 03:08:23,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:23,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-15 03:08:23,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:23,965 INFO L225 Difference]: With dead ends: 55651 [2020-10-15 03:08:23,965 INFO L226 Difference]: Without dead ends: 41217 [2020-10-15 03:08:24,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:24,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41217 states. [2020-10-15 03:08:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41217 to 41087. [2020-10-15 03:08:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41087 states. [2020-10-15 03:08:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41087 states to 41087 states and 66267 transitions. [2020-10-15 03:08:29,539 INFO L78 Accepts]: Start accepts. Automaton has 41087 states and 66267 transitions. Word has length 122 [2020-10-15 03:08:29,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:29,540 INFO L479 AbstractCegarLoop]: Abstraction has 41087 states and 66267 transitions. [2020-10-15 03:08:29,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:08:29,540 INFO L276 IsEmpty]: Start isEmpty. Operand 41087 states and 66267 transitions. [2020-10-15 03:08:29,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 03:08:29,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:29,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:08:29,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:08:29,574 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:29,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:29,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1541040760, now seen corresponding path program 1 times [2020-10-15 03:08:29,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:29,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807971919] [2020-10-15 03:08:29,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:29,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:29,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:29,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:30,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:32,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:32,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:34,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:34,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 03:08:34,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:08:34,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 03:08:34,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:34,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:34,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:34,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:34,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-15 03:08:34,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:35,174 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:08:35,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:35,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:35,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:35,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:35,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:08:35,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:35,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:35,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:35,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807971919] [2020-10-15 03:08:35,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:35,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:35,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011397564] [2020-10-15 03:08:35,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:35,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:35,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:35,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:35,239 INFO L87 Difference]: Start difference. First operand 41087 states and 66267 transitions. Second operand 5 states. [2020-10-15 03:08:44,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:44,678 INFO L93 Difference]: Finished difference Result 120031 states and 193383 transitions. [2020-10-15 03:08:44,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:44,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-15 03:08:44,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:44,838 INFO L225 Difference]: With dead ends: 120031 [2020-10-15 03:08:44,838 INFO L226 Difference]: Without dead ends: 80045 [2020-10-15 03:08:44,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:44,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80045 states. [2020-10-15 03:08:54,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80045 to 80043. [2020-10-15 03:08:54,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80043 states. [2020-10-15 03:08:54,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80043 states to 80043 states and 128037 transitions. [2020-10-15 03:08:54,642 INFO L78 Accepts]: Start accepts. Automaton has 80043 states and 128037 transitions. Word has length 126 [2020-10-15 03:08:54,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:54,643 INFO L479 AbstractCegarLoop]: Abstraction has 80043 states and 128037 transitions. [2020-10-15 03:08:54,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:54,643 INFO L276 IsEmpty]: Start isEmpty. Operand 80043 states and 128037 transitions. [2020-10-15 03:08:54,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 03:08:54,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:54,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:08:54,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:08:54,694 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:54,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:54,694 INFO L82 PathProgramCache]: Analyzing trace with hash -831412805, now seen corresponding path program 1 times [2020-10-15 03:08:54,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:54,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109489954] [2020-10-15 03:08:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:54,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:54,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:54,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:54,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:54,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:59,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:59,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 03:08:59,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:08:59,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:08:59,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:59,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:08:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-15 03:08:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:08:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:00,217 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:09:00,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:00,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:00,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:00,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:00,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:09:00,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:00,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:09:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:09:00,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:09:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:09:00,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109489954] [2020-10-15 03:09:00,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:00,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:09:00,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380812659] [2020-10-15 03:09:00,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:09:00,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:00,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:09:00,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:09:00,265 INFO L87 Difference]: Start difference. First operand 80043 states and 128037 transitions. Second operand 4 states. [2020-10-15 03:09:00,748 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-15 03:09:16,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:09:16,648 INFO L93 Difference]: Finished difference Result 186607 states and 301159 transitions. [2020-10-15 03:09:16,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:09:16,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-15 03:09:16,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:09:16,867 INFO L225 Difference]: With dead ends: 186607 [2020-10-15 03:09:16,867 INFO L226 Difference]: Without dead ends: 130477 [2020-10-15 03:09:16,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:09:17,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130477 states. [2020-10-15 03:09:31,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130477 to 129963. [2020-10-15 03:09:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129963 states. [2020-10-15 03:09:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129963 states to 129963 states and 207717 transitions. [2020-10-15 03:09:32,118 INFO L78 Accepts]: Start accepts. Automaton has 129963 states and 207717 transitions. Word has length 128 [2020-10-15 03:09:32,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:09:32,119 INFO L479 AbstractCegarLoop]: Abstraction has 129963 states and 207717 transitions. [2020-10-15 03:09:32,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:09:32,119 INFO L276 IsEmpty]: Start isEmpty. Operand 129963 states and 207717 transitions. [2020-10-15 03:09:32,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-15 03:09:32,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:09:32,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:09:32,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:09:32,173 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:09:32,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:09:32,173 INFO L82 PathProgramCache]: Analyzing trace with hash -480562249, now seen corresponding path program 1 times [2020-10-15 03:09:32,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:09:32,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164458267] [2020-10-15 03:09:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:09:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:32,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:32,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:32,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:32,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:36,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:36,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:36,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:36,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:37,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:37,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-15 03:09:37,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:09:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 03:09:37,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:37,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:09:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:09:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 03:09:37,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:37,813 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-15 03:09:37,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:09:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:09:37,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:09:37,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:09:37,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:09:37,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:09:37,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:09:37,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:09:37,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:09:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:09:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:09:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:09:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:09:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:09:37,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164458267] [2020-10-15 03:09:37,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:09:37,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:09:37,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171816515] [2020-10-15 03:09:37,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:09:37,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:09:37,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:09:37,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:09:37,870 INFO L87 Difference]: Start difference. First operand 129963 states and 207717 transitions. Second operand 5 states. [2020-10-15 03:10:10,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:10:10,210 INFO L93 Difference]: Finished difference Result 383262 states and 612702 transitions. [2020-10-15 03:10:10,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:10:10,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-15 03:10:10,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:10:10,802 INFO L225 Difference]: With dead ends: 383262 [2020-10-15 03:10:10,802 INFO L226 Difference]: Without dead ends: 253712 [2020-10-15 03:10:10,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:10:11,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253712 states.