/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:29:53,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:29:53,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:29:53,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:29:53,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:29:53,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:29:53,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:29:53,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:29:53,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:29:53,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:29:53,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:29:53,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:29:53,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:29:53,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:29:53,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:29:53,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:29:53,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:29:53,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:29:53,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:29:53,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:29:53,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:29:53,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:29:53,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:29:53,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:29:53,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:29:53,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:29:53,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:29:53,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:29:53,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:29:53,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:29:53,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:29:53,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:29:53,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:29:53,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:29:53,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:29:53,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:29:53,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:29:53,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:29:53,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:29:53,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:29:53,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:29:53,934 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 [2020-10-14 09:29:53,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:29:53,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:29:53,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:29:53,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:29:53,975 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:29:53,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:29:53,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:29:53,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:29:53,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:29:53,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:29:53,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:29:53,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:29:53,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:29:53,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:29:53,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:29:53,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:29:53,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:29:53,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:29:53,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:29:53,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:29:53,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:29:53,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:29:53,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:29:53,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:29:53,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:29:53,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:29:53,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:29:53,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:29:53,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:29:53,981 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:29:54,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:29:54,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:29:54,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:29:54,350 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:29:54,351 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:29:54,351 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:29:54,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/015e1bf8b/5c81ac1e10d6473e946ec2377b050d7f/FLAG1dd67be0d [2020-10-14 09:29:54,953 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:29:54,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:29:54,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/015e1bf8b/5c81ac1e10d6473e946ec2377b050d7f/FLAG1dd67be0d [2020-10-14 09:29:55,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/015e1bf8b/5c81ac1e10d6473e946ec2377b050d7f [2020-10-14 09:29:55,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:29:55,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:29:55,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:29:55,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:29:55,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:29:55,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:29:55" (1/1) ... [2020-10-14 09:29:55,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1be1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:55, skipping insertion in model container [2020-10-14 09:29:55,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:29:55" (1/1) ... [2020-10-14 09:29:55,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:29:55,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:29:55,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:29:55,831 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:29:55,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:29:56,002 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:29:56,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:56 WrapperNode [2020-10-14 09:29:56,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:29:56,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:29:56,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:29:56,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:29:56,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:56" (1/1) ... [2020-10-14 09:29:56,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:56" (1/1) ... [2020-10-14 09:29:56,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:56" (1/1) ... [2020-10-14 09:29:56,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:56" (1/1) ... [2020-10-14 09:29:56,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:56" (1/1) ... [2020-10-14 09:29:56,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:56" (1/1) ... [2020-10-14 09:29:56,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:56" (1/1) ... [2020-10-14 09:29:56,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:29:56,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:29:56,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:29:56,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:29:56,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:56" (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 [2020-10-14 09:29:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:29:56,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:29:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:29:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:29:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:29:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:29:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:29:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:29:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:29:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:29:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:29:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:29:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:29:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:29:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:29:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:29:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:29:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:29:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:29:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:29:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:29:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:29:57,532 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:29:57,533 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:29:57,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:29:57 BoogieIcfgContainer [2020-10-14 09:29:57,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:29:57,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:29:57,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:29:57,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:29:57,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:29:55" (1/3) ... [2020-10-14 09:29:57,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43511dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:29:57, skipping insertion in model container [2020-10-14 09:29:57,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:56" (2/3) ... [2020-10-14 09:29:57,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43511dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:29:57, skipping insertion in model container [2020-10-14 09:29:57,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:29:57" (3/3) ... [2020-10-14 09:29:57,549 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:29:57,560 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:29:57,569 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:29:57,584 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:29:57,612 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:29:57,612 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:29:57,612 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:29:57,612 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:29:57,613 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:29:57,613 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:29:57,613 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:29:57,613 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:29:57,638 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states. [2020-10-14 09:29:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 09:29:57,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:29:57,656 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] [2020-10-14 09:29:57,657 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:29:57,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:29:57,664 INFO L82 PathProgramCache]: Analyzing trace with hash -743554307, now seen corresponding path program 1 times [2020-10-14 09:29:57,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:29:57,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081501722] [2020-10-14 09:29:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:29:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:29:58,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:58,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:59,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:29:59,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:03,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:03,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 09:30:03,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:30:03,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-14 09:30:03,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:03,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:30:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 09:30:03,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 09:30:03,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:30:03,813 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:30:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:03,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:03,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:03,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:03,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:03,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 09:30:03,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:03,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:03,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:03,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:03,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:03,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:30:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:03,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081501722] [2020-10-14 09:30:03,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:03,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:30:03,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503224849] [2020-10-14 09:30:03,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:30:03,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:03,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:30:03,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:30:03,931 INFO L87 Difference]: Start difference. First operand 343 states. Second operand 4 states. [2020-10-14 09:30:04,384 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:30:06,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:30:06,502 INFO L93 Difference]: Finished difference Result 649 states and 1111 transitions. [2020-10-14 09:30:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:30:06,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-14 09:30:06,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:30:06,524 INFO L225 Difference]: With dead ends: 649 [2020-10-14 09:30:06,524 INFO L226 Difference]: Without dead ends: 483 [2020-10-14 09:30:06,529 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 [2020-10-14 09:30:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-14 09:30:06,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 480. [2020-10-14 09:30:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-10-14 09:30:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 801 transitions. [2020-10-14 09:30:06,634 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 801 transitions. Word has length 110 [2020-10-14 09:30:06,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:30:06,635 INFO L479 AbstractCegarLoop]: Abstraction has 480 states and 801 transitions. [2020-10-14 09:30:06,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:30:06,635 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 801 transitions. [2020-10-14 09:30:06,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 09:30:06,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:30:06,640 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] [2020-10-14 09:30:06,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:30:06,641 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:30:06,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:30:06,642 INFO L82 PathProgramCache]: Analyzing trace with hash 2077707881, now seen corresponding path program 1 times [2020-10-14 09:30:06,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:30:06,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988590224] [2020-10-14 09:30:06,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:30:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:06,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:07,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:08,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:09,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:11,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:11,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 09:30:11,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:30:11,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 09:30:11,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:11,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:30:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 09:30:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:30:11,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:30:12,120 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:30:12,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:12,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:12,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:12,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:12,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:12,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:30:12,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:12,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:12,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:30:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:12,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988590224] [2020-10-14 09:30:12,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:12,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:30:12,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791659415] [2020-10-14 09:30:12,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:30:12,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:12,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:30:12,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:30:12,200 INFO L87 Difference]: Start difference. First operand 480 states and 801 transitions. Second operand 4 states. [2020-10-14 09:30:12,621 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:30:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:30:14,658 INFO L93 Difference]: Finished difference Result 1050 states and 1757 transitions. [2020-10-14 09:30:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:30:14,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-10-14 09:30:14,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:30:14,665 INFO L225 Difference]: With dead ends: 1050 [2020-10-14 09:30:14,666 INFO L226 Difference]: Without dead ends: 755 [2020-10-14 09:30:14,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:30:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2020-10-14 09:30:14,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 751. [2020-10-14 09:30:14,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-14 09:30:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1254 transitions. [2020-10-14 09:30:14,717 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1254 transitions. Word has length 113 [2020-10-14 09:30:14,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:30:14,717 INFO L479 AbstractCegarLoop]: Abstraction has 751 states and 1254 transitions. [2020-10-14 09:30:14,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:30:14,718 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1254 transitions. [2020-10-14 09:30:14,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 09:30:14,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:30:14,720 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] [2020-10-14 09:30:14,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:30:14,721 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:30:14,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:30:14,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1177501778, now seen corresponding path program 1 times [2020-10-14 09:30:14,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:30:14,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128284085] [2020-10-14 09:30:14,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:30:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:14,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:14,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:15,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:15,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:17,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:17,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:18,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:19,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:19,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 09:30:19,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:30:19,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 09:30:19,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:19,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:19,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:30:19,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 09:30:19,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 09:30:19,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:30:20,229 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:30:20,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:20,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:20,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:20,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:20,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:20,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:30:20,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:20,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:20,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:20,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:20,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:30:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:20,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128284085] [2020-10-14 09:30:20,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:20,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:30:20,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878073186] [2020-10-14 09:30:20,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:30:20,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:20,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:30:20,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:30:20,292 INFO L87 Difference]: Start difference. First operand 751 states and 1254 transitions. Second operand 4 states. [2020-10-14 09:30:20,668 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:30:22,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:30:22,519 INFO L93 Difference]: Finished difference Result 1843 states and 3080 transitions. [2020-10-14 09:30:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:30:22,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-14 09:30:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:30:22,530 INFO L225 Difference]: With dead ends: 1843 [2020-10-14 09:30:22,530 INFO L226 Difference]: Without dead ends: 1277 [2020-10-14 09:30:22,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:30:22,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-10-14 09:30:22,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1271. [2020-10-14 09:30:22,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-10-14 09:30:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 2118 transitions. [2020-10-14 09:30:22,613 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 2118 transitions. Word has length 116 [2020-10-14 09:30:22,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:30:22,615 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 2118 transitions. [2020-10-14 09:30:22,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:30:22,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 2118 transitions. [2020-10-14 09:30:22,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 09:30:22,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:30:22,628 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] [2020-10-14 09:30:22,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:30:22,628 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:30:22,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:30:22,629 INFO L82 PathProgramCache]: Analyzing trace with hash -685400678, now seen corresponding path program 1 times [2020-10-14 09:30:22,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:30:22,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258689292] [2020-10-14 09:30:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:30:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:22,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:22,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:23,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:23,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:23,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:27,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 09:30:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:30:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:30:27,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:27,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:30:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 09:30:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 09:30:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:30:28,292 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:30:28,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:28,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:28,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:28,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:28,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:28,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 09:30:28,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:28,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:28,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:30:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:28,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258689292] [2020-10-14 09:30:28,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:28,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:30:28,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631785322] [2020-10-14 09:30:28,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:30:28,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:28,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:30:28,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:30:28,399 INFO L87 Difference]: Start difference. First operand 1271 states and 2118 transitions. Second operand 4 states. [2020-10-14 09:30:28,971 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:30:31,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:30:31,266 INFO L93 Difference]: Finished difference Result 3347 states and 5568 transitions. [2020-10-14 09:30:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:30:31,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-14 09:30:31,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:30:31,285 INFO L225 Difference]: With dead ends: 3347 [2020-10-14 09:30:31,286 INFO L226 Difference]: Without dead ends: 2261 [2020-10-14 09:30:31,290 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 [2020-10-14 09:30:31,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2020-10-14 09:30:31,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2251. [2020-10-14 09:30:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2251 states. [2020-10-14 09:30:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3698 transitions. [2020-10-14 09:30:31,442 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3698 transitions. Word has length 119 [2020-10-14 09:30:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:30:31,443 INFO L479 AbstractCegarLoop]: Abstraction has 2251 states and 3698 transitions. [2020-10-14 09:30:31,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:30:31,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3698 transitions. [2020-10-14 09:30:31,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 09:30:31,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:30:31,450 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] [2020-10-14 09:30:31,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:30:31,452 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:30:31,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:30:31,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1173672613, now seen corresponding path program 1 times [2020-10-14 09:30:31,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:30:31,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174671849] [2020-10-14 09:30:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:30:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:31,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:31,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:32,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:32,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:33,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:33,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:33,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:36,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:36,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 09:30:36,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:30:36,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 09:30:36,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:36,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:30:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:30:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 09:30:36,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:30:37,145 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:30:37,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:37,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:37,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:37,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:37,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:37,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:30:37,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:37,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:37,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:37,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:37,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:37,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:30:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:37,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174671849] [2020-10-14 09:30:37,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:37,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:30:37,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195644277] [2020-10-14 09:30:37,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:30:37,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:37,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:30:37,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:30:37,222 INFO L87 Difference]: Start difference. First operand 2251 states and 3698 transitions. Second operand 5 states. [2020-10-14 09:30:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:30:39,938 INFO L93 Difference]: Finished difference Result 6595 states and 10829 transitions. [2020-10-14 09:30:39,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:30:39,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-14 09:30:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:30:39,967 INFO L225 Difference]: With dead ends: 6595 [2020-10-14 09:30:39,967 INFO L226 Difference]: Without dead ends: 4385 [2020-10-14 09:30:39,974 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 [2020-10-14 09:30:39,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4385 states. [2020-10-14 09:30:40,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4385 to 4383. [2020-10-14 09:30:40,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4383 states. [2020-10-14 09:30:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 7171 transitions. [2020-10-14 09:30:40,235 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 7171 transitions. Word has length 122 [2020-10-14 09:30:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:30:40,236 INFO L479 AbstractCegarLoop]: Abstraction has 4383 states and 7171 transitions. [2020-10-14 09:30:40,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:30:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 7171 transitions. [2020-10-14 09:30:40,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 09:30:40,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:30:40,245 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] [2020-10-14 09:30:40,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:30:40,246 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:30:40,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:30:40,246 INFO L82 PathProgramCache]: Analyzing trace with hash 2095190275, now seen corresponding path program 1 times [2020-10-14 09:30:40,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:30:40,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212519860] [2020-10-14 09:30:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:30:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:40,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:40,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:40,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:42,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:42,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:42,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:42,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:45,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:45,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 09:30:45,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:30:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 09:30:45,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:45,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:30:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 09:30:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:30:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:45,841 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:30:45,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:45,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:45,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:45,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:45,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:45,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:30:45,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:45,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:45,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:45,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:30:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:45,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212519860] [2020-10-14 09:30:45,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:45,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:30:45,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36981469] [2020-10-14 09:30:45,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:30:45,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:45,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:30:45,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:30:45,907 INFO L87 Difference]: Start difference. First operand 4383 states and 7171 transitions. Second operand 4 states. [2020-10-14 09:30:47,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:30:47,937 INFO L93 Difference]: Finished difference Result 10327 states and 16945 transitions. [2020-10-14 09:30:47,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:30:47,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-14 09:30:47,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:30:47,969 INFO L225 Difference]: With dead ends: 10327 [2020-10-14 09:30:47,970 INFO L226 Difference]: Without dead ends: 6285 [2020-10-14 09:30:47,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:30:47,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6285 states. [2020-10-14 09:30:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6285 to 6139. [2020-10-14 09:30:48,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6139 states. [2020-10-14 09:30:48,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6139 states to 6139 states and 9991 transitions. [2020-10-14 09:30:48,258 INFO L78 Accepts]: Start accepts. Automaton has 6139 states and 9991 transitions. Word has length 123 [2020-10-14 09:30:48,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:30:48,258 INFO L479 AbstractCegarLoop]: Abstraction has 6139 states and 9991 transitions. [2020-10-14 09:30:48,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:30:48,258 INFO L276 IsEmpty]: Start isEmpty. Operand 6139 states and 9991 transitions. [2020-10-14 09:30:48,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 09:30:48,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:30:48,263 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] [2020-10-14 09:30:48,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:30:48,264 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:30:48,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:30:48,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1872197133, now seen corresponding path program 1 times [2020-10-14 09:30:48,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:30:48,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726890487] [2020-10-14 09:30:48,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:30:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:48,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:48,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:48,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:49,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:49,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:53,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:53,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 09:30:53,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:30:53,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:30:53,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:53,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:30:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 09:30:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 09:30:53,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:30:53,821 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:30:53,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:30:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:53,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:53,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:30:53,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:30:53,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:30:53,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:30:53,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:30:53,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:30:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:30:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:30:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:30:53,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:30:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:30:53,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726890487] [2020-10-14 09:30:53,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:30:53,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:30:53,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313758463] [2020-10-14 09:30:53,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:30:53,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:30:53,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:30:53,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:30:53,933 INFO L87 Difference]: Start difference. First operand 6139 states and 9991 transitions. Second operand 4 states. [2020-10-14 09:30:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:30:57,601 INFO L93 Difference]: Finished difference Result 17971 states and 29223 transitions. [2020-10-14 09:30:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:30:57,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-10-14 09:30:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:30:57,655 INFO L225 Difference]: With dead ends: 17971 [2020-10-14 09:30:57,656 INFO L226 Difference]: Without dead ends: 11955 [2020-10-14 09:30:57,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:30:57,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11955 states. [2020-10-14 09:30:58,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11955 to 11953. [2020-10-14 09:30:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11953 states. [2020-10-14 09:30:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11953 states to 11953 states and 19369 transitions. [2020-10-14 09:30:58,195 INFO L78 Accepts]: Start accepts. Automaton has 11953 states and 19369 transitions. Word has length 124 [2020-10-14 09:30:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:30:58,196 INFO L479 AbstractCegarLoop]: Abstraction has 11953 states and 19369 transitions. [2020-10-14 09:30:58,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:30:58,196 INFO L276 IsEmpty]: Start isEmpty. Operand 11953 states and 19369 transitions. [2020-10-14 09:30:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 09:30:58,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:30:58,203 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] [2020-10-14 09:30:58,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:30:58,203 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:30:58,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:30:58,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1139911096, now seen corresponding path program 1 times [2020-10-14 09:30:58,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:30:58,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751003959] [2020-10-14 09:30:58,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:30:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:30:58,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:58,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:58,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:58,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:58,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:59,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:30:59,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:00,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:00,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:03,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:03,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 09:31:03,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:31:03,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 09:31:03,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:03,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:03,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:31:03,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:31:03,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 09:31:03,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:31:03,685 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:31:03,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:31:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:03,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:03,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:03,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:31:03,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:31:03,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:31:03,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:03,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:03,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:31:03,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:31:03,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:31:03,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:31:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:31:03,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751003959] [2020-10-14 09:31:03,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:31:03,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:31:03,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135844120] [2020-10-14 09:31:03,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:31:03,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:31:03,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:31:03,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:31:03,754 INFO L87 Difference]: Start difference. First operand 11953 states and 19369 transitions. Second operand 4 states. [2020-10-14 09:31:06,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:31:06,288 INFO L93 Difference]: Finished difference Result 35673 states and 57782 transitions. [2020-10-14 09:31:06,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:31:06,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-10-14 09:31:06,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:31:06,352 INFO L225 Difference]: With dead ends: 35673 [2020-10-14 09:31:06,352 INFO L226 Difference]: Without dead ends: 23817 [2020-10-14 09:31:06,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:31:06,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23817 states. [2020-10-14 09:31:07,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23817 to 11973. [2020-10-14 09:31:07,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11973 states. [2020-10-14 09:31:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11973 states to 11973 states and 19397 transitions. [2020-10-14 09:31:07,055 INFO L78 Accepts]: Start accepts. Automaton has 11973 states and 19397 transitions. Word has length 124 [2020-10-14 09:31:07,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:31:07,055 INFO L479 AbstractCegarLoop]: Abstraction has 11973 states and 19397 transitions. [2020-10-14 09:31:07,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:31:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 11973 states and 19397 transitions. [2020-10-14 09:31:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 09:31:07,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:31:07,063 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] [2020-10-14 09:31:07,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:31:07,063 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:31:07,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:31:07,064 INFO L82 PathProgramCache]: Analyzing trace with hash 395867093, now seen corresponding path program 1 times [2020-10-14 09:31:07,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:31:07,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898931709] [2020-10-14 09:31:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:31:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:07,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:07,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:07,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:07,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:09,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:09,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:09,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:09,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:12,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:12,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 09:31:12,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:31:12,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:31:12,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:12,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:31:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 09:31:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:31:12,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:31:12,507 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:31:12,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:31:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:12,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:12,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:31:12,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:31:12,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:31:12,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:12,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:12,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:31:12,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:31:12,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:31:12,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:31:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:31:12,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898931709] [2020-10-14 09:31:12,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:31:12,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:31:12,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842530811] [2020-10-14 09:31:12,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:31:12,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:31:12,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:31:12,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:31:12,569 INFO L87 Difference]: Start difference. First operand 11973 states and 19397 transitions. Second operand 4 states. [2020-10-14 09:31:12,947 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:31:15,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:31:15,547 INFO L93 Difference]: Finished difference Result 23159 states and 37641 transitions. [2020-10-14 09:31:15,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:31:15,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-14 09:31:15,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:31:15,580 INFO L225 Difference]: With dead ends: 23159 [2020-10-14 09:31:15,580 INFO L226 Difference]: Without dead ends: 15589 [2020-10-14 09:31:15,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:31:15,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15589 states. [2020-10-14 09:31:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15589 to 15587. [2020-10-14 09:31:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15587 states. [2020-10-14 09:31:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15587 states to 15587 states and 25239 transitions. [2020-10-14 09:31:16,279 INFO L78 Accepts]: Start accepts. Automaton has 15587 states and 25239 transitions. Word has length 125 [2020-10-14 09:31:16,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:31:16,280 INFO L479 AbstractCegarLoop]: Abstraction has 15587 states and 25239 transitions. [2020-10-14 09:31:16,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:31:16,280 INFO L276 IsEmpty]: Start isEmpty. Operand 15587 states and 25239 transitions. [2020-10-14 09:31:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 09:31:16,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:31:16,284 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] [2020-10-14 09:31:16,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:31:16,285 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:31:16,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:31:16,285 INFO L82 PathProgramCache]: Analyzing trace with hash 853955741, now seen corresponding path program 1 times [2020-10-14 09:31:16,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:31:16,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417985129] [2020-10-14 09:31:16,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:31:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:16,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:16,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:16,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:16,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:18,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:18,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:18,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:18,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:18,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:21,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:21,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 09:31:21,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:31:21,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:31:21,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:21,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:21,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:31:21,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 09:31:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 09:31:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:31:21,691 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:31:21,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:31:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:21,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:21,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:31:21,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:31:21,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:31:21,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:21,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:31:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:31:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:31:21,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:31:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:31:21,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417985129] [2020-10-14 09:31:21,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:31:21,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:31:21,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025795142] [2020-10-14 09:31:21,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:31:21,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:31:21,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:31:21,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:31:21,741 INFO L87 Difference]: Start difference. First operand 15587 states and 25239 transitions. Second operand 4 states. [2020-10-14 09:31:24,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:31:24,654 INFO L93 Difference]: Finished difference Result 46555 states and 75367 transitions. [2020-10-14 09:31:24,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:31:24,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-14 09:31:24,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:31:24,714 INFO L225 Difference]: With dead ends: 46555 [2020-10-14 09:31:24,715 INFO L226 Difference]: Without dead ends: 31069 [2020-10-14 09:31:24,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:31:24,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31069 states. [2020-10-14 09:31:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31069 to 15613. [2020-10-14 09:31:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15613 states. [2020-10-14 09:31:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15613 states to 15613 states and 25275 transitions. [2020-10-14 09:31:25,843 INFO L78 Accepts]: Start accepts. Automaton has 15613 states and 25275 transitions. Word has length 125 [2020-10-14 09:31:25,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:31:25,843 INFO L479 AbstractCegarLoop]: Abstraction has 15613 states and 25275 transitions. [2020-10-14 09:31:25,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:31:25,843 INFO L276 IsEmpty]: Start isEmpty. Operand 15613 states and 25275 transitions. [2020-10-14 09:31:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 09:31:25,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:31:25,847 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] [2020-10-14 09:31:25,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:31:25,847 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:31:25,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:31:25,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1808934725, now seen corresponding path program 1 times [2020-10-14 09:31:25,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:31:25,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493470400] [2020-10-14 09:31:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:31:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:25,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:25,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:25,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:26,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:26,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:26,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:30,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:30,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 09:31:30,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:31:30,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:31:30,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:30,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:30,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:31:30,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 09:31:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 09:31:30,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:31:31,284 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:31:31,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:31:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:31,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:31,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:31,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:31:31,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:31:31,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:31:31,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:31,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:31,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:31:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:31:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:31:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:31:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:31:31,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493470400] [2020-10-14 09:31:31,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:31:31,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:31:31,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340132810] [2020-10-14 09:31:31,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:31:31,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:31:31,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:31:31,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:31:31,321 INFO L87 Difference]: Start difference. First operand 15613 states and 25275 transitions. Second operand 4 states. [2020-10-14 09:31:34,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:31:34,056 INFO L93 Difference]: Finished difference Result 37163 states and 60531 transitions. [2020-10-14 09:31:34,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:31:34,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-14 09:31:34,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:31:34,093 INFO L225 Difference]: With dead ends: 37163 [2020-10-14 09:31:34,093 INFO L226 Difference]: Without dead ends: 22455 [2020-10-14 09:31:34,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:31:34,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22455 states. [2020-10-14 09:31:35,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22455 to 21877. [2020-10-14 09:31:35,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21877 states. [2020-10-14 09:31:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21877 states to 21877 states and 35337 transitions. [2020-10-14 09:31:35,034 INFO L78 Accepts]: Start accepts. Automaton has 21877 states and 35337 transitions. Word has length 125 [2020-10-14 09:31:35,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:31:35,035 INFO L479 AbstractCegarLoop]: Abstraction has 21877 states and 35337 transitions. [2020-10-14 09:31:35,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:31:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand 21877 states and 35337 transitions. [2020-10-14 09:31:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 09:31:35,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:31:35,039 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] [2020-10-14 09:31:35,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:31:35,039 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:31:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:31:35,040 INFO L82 PathProgramCache]: Analyzing trace with hash 392323912, now seen corresponding path program 1 times [2020-10-14 09:31:35,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:31:35,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440578961] [2020-10-14 09:31:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:31:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:35,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:35,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:35,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:35,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:35,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:35,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:39,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:39,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:40,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:40,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 09:31:40,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:31:40,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 09:31:40,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:40,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:31:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:31:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 09:31:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:31:40,621 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:31:40,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:31:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:40,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:40,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:40,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:31:40,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:31:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 09:31:40,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:40,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:31:40,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:31:40,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:31:40,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:31:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:31:40,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440578961] [2020-10-14 09:31:40,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:31:40,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:31:40,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68286919] [2020-10-14 09:31:40,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:31:40,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:31:40,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:31:40,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:31:40,713 INFO L87 Difference]: Start difference. First operand 21877 states and 35337 transitions. Second operand 6 states. [2020-10-14 09:31:41,136 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-14 09:31:44,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:31:44,626 INFO L93 Difference]: Finished difference Result 57897 states and 93691 transitions. [2020-10-14 09:31:44,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:31:44,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2020-10-14 09:31:44,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:31:44,679 INFO L225 Difference]: With dead ends: 57897 [2020-10-14 09:31:44,679 INFO L226 Difference]: Without dead ends: 37119 [2020-10-14 09:31:44,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:31:44,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37119 states. [2020-10-14 09:31:46,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37119 to 37117. [2020-10-14 09:31:46,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37117 states. [2020-10-14 09:31:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37117 states to 37117 states and 59841 transitions. [2020-10-14 09:31:46,608 INFO L78 Accepts]: Start accepts. Automaton has 37117 states and 59841 transitions. Word has length 126 [2020-10-14 09:31:46,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:31:46,609 INFO L479 AbstractCegarLoop]: Abstraction has 37117 states and 59841 transitions. [2020-10-14 09:31:46,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:31:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 37117 states and 59841 transitions. [2020-10-14 09:31:46,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 09:31:46,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:31:46,613 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] [2020-10-14 09:31:46,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:31:46,613 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:31:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:31:46,613 INFO L82 PathProgramCache]: Analyzing trace with hash -736178963, now seen corresponding path program 1 times [2020-10-14 09:31:46,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:31:46,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001115374] [2020-10-14 09:31:46,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:31:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:46,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:46,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:46,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:46,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:47,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:47,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:49,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:49,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:49,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:51,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:51,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 09:31:51,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:31:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:31:51,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:51,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:31:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:31:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 09:31:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:31:52,115 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:31:52,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:31:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:31:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:31:52,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:31:52,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:31:52,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:31:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:31:52,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:31:52,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:31:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:31:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:31:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:31:52,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:31:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:31:52,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001115374] [2020-10-14 09:31:52,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:31:52,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:31:52,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337728750] [2020-10-14 09:31:52,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:31:52,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:31:52,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:31:52,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:31:52,199 INFO L87 Difference]: Start difference. First operand 37117 states and 59841 transitions. Second operand 5 states. [2020-10-14 09:31:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:31:59,001 INFO L93 Difference]: Finished difference Result 110151 states and 177743 transitions. [2020-10-14 09:31:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:31:59,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-14 09:31:59,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:31:59,162 INFO L225 Difference]: With dead ends: 110151 [2020-10-14 09:31:59,162 INFO L226 Difference]: Without dead ends: 73247 [2020-10-14 09:31:59,236 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 [2020-10-14 09:31:59,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73247 states. [2020-10-14 09:32:04,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73247 to 73245. [2020-10-14 09:32:04,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73245 states. [2020-10-14 09:32:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73245 states to 73245 states and 117829 transitions. [2020-10-14 09:32:04,771 INFO L78 Accepts]: Start accepts. Automaton has 73245 states and 117829 transitions. Word has length 126 [2020-10-14 09:32:04,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:32:04,771 INFO L479 AbstractCegarLoop]: Abstraction has 73245 states and 117829 transitions. [2020-10-14 09:32:04,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:32:04,772 INFO L276 IsEmpty]: Start isEmpty. Operand 73245 states and 117829 transitions. [2020-10-14 09:32:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 09:32:04,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:32:04,776 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] [2020-10-14 09:32:04,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:32:04,777 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:32:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:32:04,777 INFO L82 PathProgramCache]: Analyzing trace with hash 72942242, now seen corresponding path program 1 times [2020-10-14 09:32:04,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:32:04,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202095428] [2020-10-14 09:32:04,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:32:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:04,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:04,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:04,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:05,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:05,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:05,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:05,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:05,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:05,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:06,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:09,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:09,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 09:32:09,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:32:09,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:32:09,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:09,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:32:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:32:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 09:32:09,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:32:10,197 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:32:10,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:32:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:10,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:10,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:10,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:32:10,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:32:10,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:32:10,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:10,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:32:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:32:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:32:10,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:32:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:32:10,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202095428] [2020-10-14 09:32:10,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:32:10,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:32:10,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509260553] [2020-10-14 09:32:10,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:32:10,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:32:10,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:32:10,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:32:10,241 INFO L87 Difference]: Start difference. First operand 73245 states and 117829 transitions. Second operand 4 states. [2020-10-14 09:32:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:32:22,902 INFO L93 Difference]: Finished difference Result 216252 states and 348091 transitions. [2020-10-14 09:32:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:32:22,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-14 09:32:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:32:23,123 INFO L225 Difference]: With dead ends: 216252 [2020-10-14 09:32:23,123 INFO L226 Difference]: Without dead ends: 143374 [2020-10-14 09:32:23,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:32:23,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143374 states. [2020-10-14 09:32:33,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143374 to 143372. [2020-10-14 09:32:33,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143372 states. [2020-10-14 09:32:33,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143372 states to 143372 states and 229821 transitions. [2020-10-14 09:32:33,241 INFO L78 Accepts]: Start accepts. Automaton has 143372 states and 229821 transitions. Word has length 127 [2020-10-14 09:32:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:32:33,242 INFO L479 AbstractCegarLoop]: Abstraction has 143372 states and 229821 transitions. [2020-10-14 09:32:33,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:32:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 143372 states and 229821 transitions. [2020-10-14 09:32:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 09:32:33,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:32:33,250 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] [2020-10-14 09:32:33,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:32:33,251 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:32:33,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:32:33,251 INFO L82 PathProgramCache]: Analyzing trace with hash 676514363, now seen corresponding path program 1 times [2020-10-14 09:32:33,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:32:33,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098820971] [2020-10-14 09:32:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:32:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:33,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:33,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:33,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:34,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:34,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:38,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:38,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 09:32:38,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:32:38,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:32:38,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:38,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:32:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:32:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 09:32:38,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:32:40,417 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:32:40,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:32:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:40,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:40,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:32:40,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:32:40,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:32:40,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:40,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:40,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:32:40,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:32:40,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:32:40,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:32:40,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:32:40,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098820971] [2020-10-14 09:32:40,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:32:40,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:32:40,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563929671] [2020-10-14 09:32:40,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:32:40,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:32:40,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:32:40,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:32:40,486 INFO L87 Difference]: Start difference. First operand 143372 states and 229821 transitions. Second operand 5 states. [2020-10-14 09:32:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:32:52,223 INFO L93 Difference]: Finished difference Result 300810 states and 482579 transitions. [2020-10-14 09:32:52,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:32:52,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 09:32:52,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:32:52,451 INFO L225 Difference]: With dead ends: 300810 [2020-10-14 09:32:52,451 INFO L226 Difference]: Without dead ends: 157463 [2020-10-14 09:32:52,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:32:52,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157463 states. [2020-10-14 09:33:04,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157463 to 143417. [2020-10-14 09:33:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143417 states. [2020-10-14 09:33:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143417 states to 143417 states and 229897 transitions. [2020-10-14 09:33:05,199 INFO L78 Accepts]: Start accepts. Automaton has 143417 states and 229897 transitions. Word has length 128 [2020-10-14 09:33:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:05,200 INFO L479 AbstractCegarLoop]: Abstraction has 143417 states and 229897 transitions. [2020-10-14 09:33:05,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:33:05,200 INFO L276 IsEmpty]: Start isEmpty. Operand 143417 states and 229897 transitions. [2020-10-14 09:33:05,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 09:33:05,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:05,208 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] [2020-10-14 09:33:05,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:33:05,209 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:05,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:05,209 INFO L82 PathProgramCache]: Analyzing trace with hash -240015436, now seen corresponding path program 1 times [2020-10-14 09:33:05,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:05,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974815612] [2020-10-14 09:33:05,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:05,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:05,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:05,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:05,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:05,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:05,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:06,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:10,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:10,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 09:33:10,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:33:10,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 09:33:10,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:10,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 09:33:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 09:33:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:10,676 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:33:10,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:10,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:10,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:10,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:10,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:10,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:33:10,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:10,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:10,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:10,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:10,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:10,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:33:10,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974815612] [2020-10-14 09:33:10,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:10,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:10,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443332700] [2020-10-14 09:33:10,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:10,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:10,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:10,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:10,715 INFO L87 Difference]: Start difference. First operand 143417 states and 229897 transitions. Second operand 4 states. [2020-10-14 09:33:11,139 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:33:24,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:24,370 INFO L93 Difference]: Finished difference Result 276541 states and 447307 transitions. [2020-10-14 09:33:24,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:33:24,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-14 09:33:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:24,637 INFO L225 Difference]: With dead ends: 276541 [2020-10-14 09:33:24,637 INFO L226 Difference]: Without dead ends: 181931 [2020-10-14 09:33:24,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:33:24,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181931 states.