/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_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:15:14,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:15:14,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:15:14,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:15:14,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:15:14,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:15:14,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:15:14,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:15:14,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:15:14,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:15:14,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:15:14,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:15:14,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:15:14,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:15:14,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:15:14,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:15:14,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:15:14,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:15:14,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:15:14,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:15:14,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:15:14,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:15:14,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:15:14,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:15:14,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:15:14,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:15:14,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:15:14,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:15:14,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:15:14,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:15:14,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:15:14,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:15:14,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:15:14,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:15:14,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:15:14,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:15:14,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:15:14,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:15:14,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:15:14,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:15:14,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:15:14,835 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 04:15:14,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:15:14,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:15:14,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:15:14,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:15:14,883 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:15:14,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:15:14,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:15:14,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:15:14,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:15:14,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:15:14,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:15:14,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:15:14,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:15:14,886 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:15:14,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:15:14,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:15:14,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:15:14,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:15:14,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:15:14,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:15:14,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:15:14,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:15:14,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:15:14,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:15:14,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:15:14,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:15:14,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:15:14,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:15:14,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:15:14,889 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 04:15:15,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:15:15,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:15:15,194 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:15:15,196 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:15:15,196 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:15:15,197 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 04:15:15,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4df031544/2cee23e737204d2eaac95b92ad21d5f4/FLAGf0a38260b [2020-10-15 04:15:16,043 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:15:16,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 04:15:16,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4df031544/2cee23e737204d2eaac95b92ad21d5f4/FLAGf0a38260b [2020-10-15 04:15:16,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4df031544/2cee23e737204d2eaac95b92ad21d5f4 [2020-10-15 04:15:16,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:15:16,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:15:16,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:15:16,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:15:16,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:15:16,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:15:16" (1/1) ... [2020-10-15 04:15:16,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412ead50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:16, skipping insertion in model container [2020-10-15 04:15:16,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:15:16" (1/1) ... [2020-10-15 04:15:16,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:15:16,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:15:17,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:15:17,956 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:15:19,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:15:19,135 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:15:19,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:19 WrapperNode [2020-10-15 04:15:19,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:15:19,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:15:19,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:15:19,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:15:19,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:19" (1/1) ... [2020-10-15 04:15:19,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:19" (1/1) ... [2020-10-15 04:15:19,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:19" (1/1) ... [2020-10-15 04:15:19,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:19" (1/1) ... [2020-10-15 04:15:19,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:19" (1/1) ... [2020-10-15 04:15:19,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:19" (1/1) ... [2020-10-15 04:15:19,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:19" (1/1) ... [2020-10-15 04:15:19,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:15:19,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:15:19,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:15:19,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:15:19,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:19" (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 04:15:19,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:15:19,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:15:19,474 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:15:19,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:15:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:15:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:15:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:15:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:15:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:15:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:15:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:15:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:15:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:15:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:15:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:15:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:15:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 04:15:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:15:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:15:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:15:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:15:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:15:23,609 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:15:23,609 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:15:23,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:15:23 BoogieIcfgContainer [2020-10-15 04:15:23,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:15:23,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:15:23,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:15:23,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:15:23,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:15:16" (1/3) ... [2020-10-15 04:15:23,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcb2d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:15:23, skipping insertion in model container [2020-10-15 04:15:23,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:19" (2/3) ... [2020-10-15 04:15:23,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcb2d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:15:23, skipping insertion in model container [2020-10-15 04:15:23,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:15:23" (3/3) ... [2020-10-15 04:15:23,630 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-15 04:15:23,641 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:15:23,652 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:15:23,669 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:15:23,700 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:15:23,701 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:15:23,701 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:15:23,701 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:15:23,701 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:15:23,701 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:15:23,701 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:15:23,702 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:15:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states. [2020-10-15 04:15:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-15 04:15:23,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:15:23,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:15:23,792 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:15:23,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:15:23,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1961833088, now seen corresponding path program 1 times [2020-10-15 04:15:23,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:15:23,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005842250] [2020-10-15 04:15:23,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:15:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:30,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:31,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:31,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:31,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-15 04:15:31,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 04:15:31,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5416 [2020-10-15 04:15:31,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:31,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:15:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:15:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-15 04:15:31,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:15:33,022 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-15 04:15:33,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:15:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:33,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:33,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:33,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:15:33,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:15:33,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 04:15:33,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:33,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:33,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:15:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:15:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:15:33,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:15:33,740 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 04:15:33,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005842250] [2020-10-15 04:15:33,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:15:33,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:15:33,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849633495] [2020-10-15 04:15:33,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:15:33,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:15:33,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:15:33,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:15:33,764 INFO L87 Difference]: Start difference. First operand 1431 states. Second operand 5 states. [2020-10-15 04:15:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:15:50,854 INFO L93 Difference]: Finished difference Result 4236 states and 7632 transitions. [2020-10-15 04:15:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:15:50,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 487 [2020-10-15 04:15:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:15:50,900 INFO L225 Difference]: With dead ends: 4236 [2020-10-15 04:15:50,900 INFO L226 Difference]: Without dead ends: 2814 [2020-10-15 04:15:50,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:15:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2020-10-15 04:15:51,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2812. [2020-10-15 04:15:51,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2020-10-15 04:15:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4639 transitions. [2020-10-15 04:15:51,186 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4639 transitions. Word has length 487 [2020-10-15 04:15:51,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:15:51,187 INFO L479 AbstractCegarLoop]: Abstraction has 2812 states and 4639 transitions. [2020-10-15 04:15:51,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:15:51,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4639 transitions. [2020-10-15 04:15:51,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-15 04:15:51,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:15:51,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:15:51,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:15:51,205 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:15:51,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:15:51,205 INFO L82 PathProgramCache]: Analyzing trace with hash 39211808, now seen corresponding path program 1 times [2020-10-15 04:15:51,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:15:51,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589495860] [2020-10-15 04:15:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:15:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:52,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:53,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:54,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:54,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:55,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:55,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:55,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:55,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:56,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:56,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:56,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-15 04:15:56,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:15:56,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 04:15:56,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:56,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:15:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:15:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-15 04:15:56,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:15:58,049 WARN L193 SmtUtils]: Spent 961.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-15 04:15:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:15:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:58,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:58,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:58,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:15:58,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:15:58,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 04:15:58,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:58,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:58,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:15:58,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:15:58,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:15:58,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:15:58,855 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 04:15:58,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589495860] [2020-10-15 04:15:58,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:15:58,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:15:58,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498258564] [2020-10-15 04:15:58,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:15:58,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:15:58,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:15:58,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:15:58,864 INFO L87 Difference]: Start difference. First operand 2812 states and 4639 transitions. Second operand 5 states. [2020-10-15 04:16:13,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:16:13,944 INFO L93 Difference]: Finished difference Result 8344 states and 13766 transitions. [2020-10-15 04:16:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:16:13,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 489 [2020-10-15 04:16:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:16:13,974 INFO L225 Difference]: With dead ends: 8344 [2020-10-15 04:16:13,975 INFO L226 Difference]: Without dead ends: 5550 [2020-10-15 04:16:13,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:16:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5550 states. [2020-10-15 04:16:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 5548. [2020-10-15 04:16:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5548 states. [2020-10-15 04:16:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5548 states to 5548 states and 9114 transitions. [2020-10-15 04:16:14,219 INFO L78 Accepts]: Start accepts. Automaton has 5548 states and 9114 transitions. Word has length 489 [2020-10-15 04:16:14,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:14,221 INFO L479 AbstractCegarLoop]: Abstraction has 5548 states and 9114 transitions. [2020-10-15 04:16:14,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:16:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5548 states and 9114 transitions. [2020-10-15 04:16:14,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-15 04:16:14,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:14,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:16:14,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:16:14,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:14,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:14,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1329199647, now seen corresponding path program 1 times [2020-10-15 04:16:14,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:14,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994352920] [2020-10-15 04:16:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:14,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:14,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:15,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:15,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:16,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:16,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:16,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:17,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:17,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:18,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:19,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:19,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:19,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-15 04:16:19,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:16:19,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-15 04:16:19,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:19,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:16:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 04:16:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 309 [2020-10-15 04:16:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:20,619 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-15 04:16:20,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:20,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:20,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:20,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:20,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 04:16:20,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:20,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:20,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:21,088 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 04:16:21,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994352920] [2020-10-15 04:16:21,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:21,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:16:21,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866829232] [2020-10-15 04:16:21,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:16:21,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:21,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:16:21,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:16:21,091 INFO L87 Difference]: Start difference. First operand 5548 states and 9114 transitions. Second operand 4 states. [2020-10-15 04:16:39,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:16:39,706 INFO L93 Difference]: Finished difference Result 16359 states and 26857 transitions. [2020-10-15 04:16:39,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:16:39,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 493 [2020-10-15 04:16:39,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:16:39,763 INFO L225 Difference]: With dead ends: 16359 [2020-10-15 04:16:39,763 INFO L226 Difference]: Without dead ends: 10957 [2020-10-15 04:16:39,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:16:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10957 states. [2020-10-15 04:16:40,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10957 to 10955. [2020-10-15 04:16:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10955 states. [2020-10-15 04:16:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10955 states to 10955 states and 17933 transitions. [2020-10-15 04:16:40,232 INFO L78 Accepts]: Start accepts. Automaton has 10955 states and 17933 transitions. Word has length 493 [2020-10-15 04:16:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:40,237 INFO L479 AbstractCegarLoop]: Abstraction has 10955 states and 17933 transitions. [2020-10-15 04:16:40,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:16:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 10955 states and 17933 transitions. [2020-10-15 04:16:40,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-15 04:16:40,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:40,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:16:40,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:16:40,267 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:40,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:40,267 INFO L82 PathProgramCache]: Analyzing trace with hash 560808762, now seen corresponding path program 1 times [2020-10-15 04:16:40,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:40,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735266801] [2020-10-15 04:16:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:40,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:40,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:40,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:41,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:41,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:42,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:42,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:43,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:44,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:44,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:44,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:45,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:45,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:45,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-15 04:16:45,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 04:16:45,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-15 04:16:45,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:45,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:45,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:16:45,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 04:16:45,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-15 04:16:45,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:16:46,242 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-15 04:16:46,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:46,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:46,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:46,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 04:16:46,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:46,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:46,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:16:46,531 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 04:16:46,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735266801] [2020-10-15 04:16:46,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:46,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:16:46,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262229543] [2020-10-15 04:16:46,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:16:46,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:46,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:16:46,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:16:46,535 INFO L87 Difference]: Start difference. First operand 10955 states and 17933 transitions. Second operand 4 states. [2020-10-15 04:17:05,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:05,866 INFO L93 Difference]: Finished difference Result 32145 states and 52531 transitions. [2020-10-15 04:17:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:17:05,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 493 [2020-10-15 04:17:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:05,929 INFO L225 Difference]: With dead ends: 32145 [2020-10-15 04:17:05,929 INFO L226 Difference]: Without dead ends: 21695 [2020-10-15 04:17:05,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:17:05,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21695 states. [2020-10-15 04:17:06,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21695 to 21693. [2020-10-15 04:17:06,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21693 states. [2020-10-15 04:17:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21693 states to 21693 states and 35381 transitions. [2020-10-15 04:17:06,795 INFO L78 Accepts]: Start accepts. Automaton has 21693 states and 35381 transitions. Word has length 493 [2020-10-15 04:17:06,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:06,796 INFO L479 AbstractCegarLoop]: Abstraction has 21693 states and 35381 transitions. [2020-10-15 04:17:06,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:17:06,797 INFO L276 IsEmpty]: Start isEmpty. Operand 21693 states and 35381 transitions. [2020-10-15 04:17:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-15 04:17:06,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:06,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:17:06,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:17:06,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:06,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:06,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1995600639, now seen corresponding path program 1 times [2020-10-15 04:17:06,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:06,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025462353] [2020-10-15 04:17:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:06,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:07,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:08,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:08,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:09,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:10,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:10,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:10,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:10,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:11,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:11,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:11,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:11,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:11,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-15 04:17:11,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 04:17:11,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-15 04:17:11,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:11,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:11,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-10-15 04:17:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:13,022 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-15 04:17:13,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:13,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:13,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:13,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:13,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:13,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 04:17:13,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:13,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:13,387 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 04:17:13,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025462353] [2020-10-15 04:17:13,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:13,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:13,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278956901] [2020-10-15 04:17:13,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:13,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:13,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:13,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:13,390 INFO L87 Difference]: Start difference. First operand 21693 states and 35381 transitions. Second operand 5 states. [2020-10-15 04:17:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:17:31,016 INFO L93 Difference]: Finished difference Result 63441 states and 103247 transitions. [2020-10-15 04:17:31,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:17:31,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 493 [2020-10-15 04:17:31,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:17:31,112 INFO L225 Difference]: With dead ends: 63441 [2020-10-15 04:17:31,112 INFO L226 Difference]: Without dead ends: 42575 [2020-10-15 04:17:31,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:17:31,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42575 states. [2020-10-15 04:17:33,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42575 to 42573. [2020-10-15 04:17:33,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42573 states. [2020-10-15 04:17:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42573 states to 42573 states and 69085 transitions. [2020-10-15 04:17:33,994 INFO L78 Accepts]: Start accepts. Automaton has 42573 states and 69085 transitions. Word has length 493 [2020-10-15 04:17:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:17:33,995 INFO L479 AbstractCegarLoop]: Abstraction has 42573 states and 69085 transitions. [2020-10-15 04:17:33,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:17:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 42573 states and 69085 transitions. [2020-10-15 04:17:34,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-10-15 04:17:34,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:34,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:17:34,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:17:34,079 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:34,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:34,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1923819455, now seen corresponding path program 1 times [2020-10-15 04:17:34,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:34,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376366685] [2020-10-15 04:17:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:34,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:34,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:34,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:34,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:35,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:35,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:36,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:36,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:37,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:37,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:37,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:37,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:38,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:38,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:39,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:39,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-15 04:17:39,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 04:17:39,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-15 04:17:39,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:39,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:17:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-15 04:17:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-15 04:17:39,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:40,094 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-15 04:17:40,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:40,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:40,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:40,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:40,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:17:40,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:40,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:40,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:40,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:40,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:17:40,344 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 04:17:40,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376366685] [2020-10-15 04:17:40,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:40,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:17:40,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277411618] [2020-10-15 04:17:40,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:17:40,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:40,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:17:40,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:17:40,346 INFO L87 Difference]: Start difference. First operand 42573 states and 69085 transitions. Second operand 4 states. [2020-10-15 04:18:02,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:02,352 INFO L93 Difference]: Finished difference Result 124177 states and 200955 transitions. [2020-10-15 04:18:02,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:18:02,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 495 [2020-10-15 04:18:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:02,479 INFO L225 Difference]: With dead ends: 124177 [2020-10-15 04:18:02,479 INFO L226 Difference]: Without dead ends: 83919 [2020-10-15 04:18:02,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:18:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83919 states. [2020-10-15 04:18:05,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83919 to 83917. [2020-10-15 04:18:05,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83917 states. [2020-10-15 04:18:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83917 states to 83917 states and 135561 transitions. [2020-10-15 04:18:05,683 INFO L78 Accepts]: Start accepts. Automaton has 83917 states and 135561 transitions. Word has length 495 [2020-10-15 04:18:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:05,684 INFO L479 AbstractCegarLoop]: Abstraction has 83917 states and 135561 transitions. [2020-10-15 04:18:05,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:18:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 83917 states and 135561 transitions. [2020-10-15 04:18:05,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-15 04:18:05,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:05,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:18:05,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:18:05,772 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:05,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1974745634, now seen corresponding path program 1 times [2020-10-15 04:18:05,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:05,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366465698] [2020-10-15 04:18:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:05,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:05,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:06,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:06,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:06,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:07,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:07,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:07,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:08,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:08,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:08,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:09,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:09,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:09,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:10,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:10,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:10,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-15 04:18:10,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 04:18:10,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-15 04:18:10,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:10,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:10,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:18:10,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-15 04:18:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-15 04:18:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:11,780 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-15 04:18:11,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:11,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:11,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:11,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:11,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:11,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 04:18:11,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:11,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:11,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:18:12,045 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 04:18:12,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366465698] [2020-10-15 04:18:12,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:12,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:18:12,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999524768] [2020-10-15 04:18:12,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:18:12,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:12,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:18:12,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:18:12,049 INFO L87 Difference]: Start difference. First operand 83917 states and 135561 transitions. Second operand 4 states. [2020-10-15 04:18:37,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:37,803 INFO L93 Difference]: Finished difference Result 245649 states and 395847 transitions. [2020-10-15 04:18:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:18:37,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 496 [2020-10-15 04:18:37,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:38,039 INFO L225 Difference]: With dead ends: 245649 [2020-10-15 04:18:38,040 INFO L226 Difference]: Without dead ends: 164943 [2020-10-15 04:18:38,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:18:38,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164943 states. [2020-10-15 04:18:47,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164943 to 164941. [2020-10-15 04:18:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164941 states. [2020-10-15 04:18:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164941 states to 164941 states and 265109 transitions. [2020-10-15 04:18:47,527 INFO L78 Accepts]: Start accepts. Automaton has 164941 states and 265109 transitions. Word has length 496 [2020-10-15 04:18:47,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:47,528 INFO L479 AbstractCegarLoop]: Abstraction has 164941 states and 265109 transitions. [2020-10-15 04:18:47,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:18:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 164941 states and 265109 transitions. [2020-10-15 04:18:47,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-15 04:18:47,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:47,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:18:47,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:18:47,655 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:47,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:47,655 INFO L82 PathProgramCache]: Analyzing trace with hash 502215549, now seen corresponding path program 1 times [2020-10-15 04:18:47,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:47,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552618077] [2020-10-15 04:18:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:47,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:47,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:47,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:48,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking...