/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:05:23,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:05:23,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:05:23,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:05:23,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:05:23,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:05:23,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:05:23,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:05:23,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:05:23,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:05:23,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:05:23,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:05:23,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:05:23,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:05:23,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:05:23,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:05:23,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:05:23,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:05:23,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:05:23,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:05:23,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:05:23,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:05:24,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:05:24,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:05:24,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:05:24,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:05:24,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:05:24,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:05:24,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:05:24,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:05:24,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:05:24,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:05:24,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:05:24,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:05:24,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:05:24,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:05:24,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:05:24,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:05:24,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:05:24,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:05:24,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:05:24,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 04:05:24,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:05:24,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:05:24,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:05:24,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:05:24,039 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:05:24,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:05:24,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:05:24,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:05:24,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:05:24,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:05:24,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:05:24,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:05:24,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:05:24,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:05:24,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:05:24,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:05:24,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:05:24,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:05:24,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:05:24,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:05:24,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:05:24,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:05:24,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:05:24,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:05:24,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:05:24,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:05:24,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:05:24,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:05:24,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:05:24,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:05:24,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:05:24,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:05:24,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:05:24,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:05:24,395 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:05:24,396 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:05:24,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/034c3677a/03bd2d7cd1604a7b8642c46f62421167/FLAGa4831c4d2 [2020-10-15 04:05:25,013 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:05:25,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:05:25,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/034c3677a/03bd2d7cd1604a7b8642c46f62421167/FLAGa4831c4d2 [2020-10-15 04:05:25,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/034c3677a/03bd2d7cd1604a7b8642c46f62421167 [2020-10-15 04:05:25,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:05:25,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:05:25,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:05:25,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:05:25,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:05:25,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:05:25" (1/1) ... [2020-10-15 04:05:25,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322abbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:25, skipping insertion in model container [2020-10-15 04:05:25,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:05:25" (1/1) ... [2020-10-15 04:05:25,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:05:25,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:05:25,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:05:25,946 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:05:26,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:05:26,122 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:05:26,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:26 WrapperNode [2020-10-15 04:05:26,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:05:26,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:05:26,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:05:26,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:05:26,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:26" (1/1) ... [2020-10-15 04:05:26,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:26" (1/1) ... [2020-10-15 04:05:26,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:26" (1/1) ... [2020-10-15 04:05:26,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:26" (1/1) ... [2020-10-15 04:05:26,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:26" (1/1) ... [2020-10-15 04:05:26,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:26" (1/1) ... [2020-10-15 04:05:26,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:26" (1/1) ... [2020-10-15 04:05:26,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:05:26,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:05:26,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:05:26,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:05:26,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:05:26,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:05:26,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:05:26,290 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:05:26,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:05:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:05:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:05:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 04:05:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:05:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:05:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:05:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:05:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:05:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:05:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:05:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:05:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:05:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:05:26,294 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:05:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:05:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:05:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:05:27,665 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:05:27,666 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:05:27,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:05:27 BoogieIcfgContainer [2020-10-15 04:05:27,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:05:27,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:05:27,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:05:27,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:05:27,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:05:25" (1/3) ... [2020-10-15 04:05:27,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7638e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:05:27, skipping insertion in model container [2020-10-15 04:05:27,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:05:26" (2/3) ... [2020-10-15 04:05:27,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7638e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:05:27, skipping insertion in model container [2020-10-15 04:05:27,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:05:27" (3/3) ... [2020-10-15 04:05:27,681 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:05:27,692 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:05:27,701 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:05:27,716 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:05:27,743 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:05:27,743 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:05:27,744 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:05:27,744 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:05:27,744 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:05:27,744 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:05:27,744 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:05:27,745 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:05:27,769 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states. [2020-10-15 04:05:27,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-15 04:05:27,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:27,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:27,786 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:27,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:27,793 INFO L82 PathProgramCache]: Analyzing trace with hash -2004415420, now seen corresponding path program 1 times [2020-10-15 04:05:27,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:27,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180593595] [2020-10-15 04:05:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:28,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:28,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:29,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:29,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:29,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:29,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:30,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:30,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:31,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:33,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:33,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-15 04:05:33,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:05:33,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-15 04:05:33,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:33,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:05:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 04:05:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 04:05:33,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:05:33,907 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:05:33,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:33,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:33,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:33,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:33,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:33,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 04:05:33,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:33,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:33,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:33,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:33,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:33,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:05:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:34,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180593595] [2020-10-15 04:05:34,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:34,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:05:34,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501871703] [2020-10-15 04:05:34,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:05:34,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:34,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:05:34,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:05:34,092 INFO L87 Difference]: Start difference. First operand 336 states. Second operand 4 states. [2020-10-15 04:05:34,456 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-15 04:05:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:36,248 INFO L93 Difference]: Finished difference Result 683 states and 1185 transitions. [2020-10-15 04:05:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:36,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-15 04:05:36,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:36,271 INFO L225 Difference]: With dead ends: 683 [2020-10-15 04:05:36,272 INFO L226 Difference]: Without dead ends: 543 [2020-10-15 04:05:36,280 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 [2020-10-15 04:05:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-10-15 04:05:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 541. [2020-10-15 04:05:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-10-15 04:05:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 804 transitions. [2020-10-15 04:05:36,429 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 804 transitions. Word has length 156 [2020-10-15 04:05:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:36,433 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 804 transitions. [2020-10-15 04:05:36,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:05:36,434 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 804 transitions. [2020-10-15 04:05:36,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-15 04:05:36,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:36,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:36,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:05:36,445 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:36,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:36,446 INFO L82 PathProgramCache]: Analyzing trace with hash 940137715, now seen corresponding path program 1 times [2020-10-15 04:05:36,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:36,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800215352] [2020-10-15 04:05:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:36,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:36,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:37,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:37,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:37,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:37,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:37,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:39,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:41,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:41,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-15 04:05:41,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:05:41,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:05:41,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:41,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:05:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-15 04:05:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-15 04:05:41,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:05:41,918 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:05:41,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:41,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:41,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:41,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:41,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:41,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:05:41,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:41,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:41,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:41,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:41,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:41,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:05:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:41,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800215352] [2020-10-15 04:05:41,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:41,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:05:41,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115466392] [2020-10-15 04:05:41,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:05:41,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:41,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:05:41,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:05:41,998 INFO L87 Difference]: Start difference. First operand 541 states and 804 transitions. Second operand 4 states. [2020-10-15 04:05:42,209 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-15 04:05:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:43,483 INFO L93 Difference]: Finished difference Result 1179 states and 1801 transitions. [2020-10-15 04:05:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:43,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-15 04:05:43,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:43,491 INFO L225 Difference]: With dead ends: 1179 [2020-10-15 04:05:43,492 INFO L226 Difference]: Without dead ends: 945 [2020-10-15 04:05:43,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:43,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2020-10-15 04:05:43,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 943. [2020-10-15 04:05:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-15 04:05:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1414 transitions. [2020-10-15 04:05:43,531 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1414 transitions. Word has length 156 [2020-10-15 04:05:43,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:43,531 INFO L479 AbstractCegarLoop]: Abstraction has 943 states and 1414 transitions. [2020-10-15 04:05:43,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:05:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1414 transitions. [2020-10-15 04:05:43,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-15 04:05:43,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:43,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:43,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:05:43,535 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:43,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:43,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1201814348, now seen corresponding path program 1 times [2020-10-15 04:05:43,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:43,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891164516] [2020-10-15 04:05:43,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:43,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:43,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:44,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:44,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:44,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:45,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:45,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:46,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:48,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:48,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-15 04:05:48,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:05:48,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 04:05:48,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:48,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:05:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 04:05:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-15 04:05:48,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:05:48,921 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:05:48,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:48,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:48,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:48,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:48,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:48,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:05:48,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:48,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:48,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:05:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:49,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891164516] [2020-10-15 04:05:49,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:49,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:05:49,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591586399] [2020-10-15 04:05:49,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:05:49,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:49,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:05:49,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:05:49,043 INFO L87 Difference]: Start difference. First operand 943 states and 1414 transitions. Second operand 4 states. [2020-10-15 04:05:49,345 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-15 04:05:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:50,854 INFO L93 Difference]: Finished difference Result 2143 states and 3292 transitions. [2020-10-15 04:05:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:50,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-15 04:05:50,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:50,866 INFO L225 Difference]: With dead ends: 2143 [2020-10-15 04:05:50,866 INFO L226 Difference]: Without dead ends: 1717 [2020-10-15 04:05:50,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:50,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2020-10-15 04:05:50,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1715. [2020-10-15 04:05:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1715 states. [2020-10-15 04:05:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2582 transitions. [2020-10-15 04:05:50,949 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2582 transitions. Word has length 156 [2020-10-15 04:05:50,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:50,950 INFO L479 AbstractCegarLoop]: Abstraction has 1715 states and 2582 transitions. [2020-10-15 04:05:50,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:05:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2582 transitions. [2020-10-15 04:05:50,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-15 04:05:50,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:50,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:50,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:05:50,966 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:50,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:50,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1399667535, now seen corresponding path program 1 times [2020-10-15 04:05:50,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:50,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142693346] [2020-10-15 04:05:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:51,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:51,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:51,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:51,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:51,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:51,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:51,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:51,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:51,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:52,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:53,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:56,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:56,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-15 04:05:56,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:05:56,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:05:56,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:56,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:56,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:05:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:05:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-15 04:05:56,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:05:56,388 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:05:56,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:05:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:56,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:56,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:05:56,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:05:56,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:05:56,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 04:05:56,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:05:56,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:05:56,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:05:56,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:05:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:05:56,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:05:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:05:56,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142693346] [2020-10-15 04:05:56,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:05:56,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:05:56,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982258006] [2020-10-15 04:05:56,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:05:56,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:05:56,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:05:56,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:05:56,534 INFO L87 Difference]: Start difference. First operand 1715 states and 2582 transitions. Second operand 5 states. [2020-10-15 04:05:59,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:05:59,423 INFO L93 Difference]: Finished difference Result 5003 states and 7511 transitions. [2020-10-15 04:05:59,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:05:59,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-15 04:05:59,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:05:59,440 INFO L225 Difference]: With dead ends: 5003 [2020-10-15 04:05:59,440 INFO L226 Difference]: Without dead ends: 3305 [2020-10-15 04:05:59,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:05:59,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2020-10-15 04:05:59,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 3303. [2020-10-15 04:05:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3303 states. [2020-10-15 04:05:59,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 4911 transitions. [2020-10-15 04:05:59,569 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 4911 transitions. Word has length 156 [2020-10-15 04:05:59,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:05:59,569 INFO L479 AbstractCegarLoop]: Abstraction has 3303 states and 4911 transitions. [2020-10-15 04:05:59,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:05:59,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 4911 transitions. [2020-10-15 04:05:59,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-15 04:05:59,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:05:59,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:05:59,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:05:59,575 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:05:59,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:05:59,576 INFO L82 PathProgramCache]: Analyzing trace with hash 850093082, now seen corresponding path program 1 times [2020-10-15 04:05:59,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:05:59,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138768018] [2020-10-15 04:05:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:05:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:05:59,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:59,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:59,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:59,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:59,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:59,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:05:59,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:00,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:00,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:00,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:00,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:03,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:04,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:04,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-15 04:06:04,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:06:04,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 04:06:04,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:04,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:06:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-15 04:06:04,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:04,972 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:06:04,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:04,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:04,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:04,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:06:04,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:04,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:05,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138768018] [2020-10-15 04:06:05,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:05,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:05,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714246071] [2020-10-15 04:06:05,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:05,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:05,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:05,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:05,062 INFO L87 Difference]: Start difference. First operand 3303 states and 4911 transitions. Second operand 5 states. [2020-10-15 04:06:07,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:07,895 INFO L93 Difference]: Finished difference Result 9646 states and 14300 transitions. [2020-10-15 04:06:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:07,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-15 04:06:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:07,925 INFO L225 Difference]: With dead ends: 9646 [2020-10-15 04:06:07,925 INFO L226 Difference]: Without dead ends: 6377 [2020-10-15 04:06:07,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:06:07,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6377 states. [2020-10-15 04:06:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6377 to 6375. [2020-10-15 04:06:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6375 states. [2020-10-15 04:06:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6375 states to 6375 states and 9371 transitions. [2020-10-15 04:06:08,291 INFO L78 Accepts]: Start accepts. Automaton has 6375 states and 9371 transitions. Word has length 157 [2020-10-15 04:06:08,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:08,291 INFO L479 AbstractCegarLoop]: Abstraction has 6375 states and 9371 transitions. [2020-10-15 04:06:08,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:06:08,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6375 states and 9371 transitions. [2020-10-15 04:06:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-15 04:06:08,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:08,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:08,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:06:08,301 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:08,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:08,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1959935568, now seen corresponding path program 1 times [2020-10-15 04:06:08,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:08,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438248065] [2020-10-15 04:06:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:08,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:08,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:08,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:08,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:08,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:08,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:08,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:09,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:09,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:13,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:13,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-15 04:06:13,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:06:13,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:06:13,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:13,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:13,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:06:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 04:06:13,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:13,683 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:06:13,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:13,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:13,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:13,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:13,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-15 04:06:13,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:13,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:13,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:13,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438248065] [2020-10-15 04:06:13,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:13,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:13,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096881206] [2020-10-15 04:06:13,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:13,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:13,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:13,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:13,845 INFO L87 Difference]: Start difference. First operand 6375 states and 9371 transitions. Second operand 5 states. [2020-10-15 04:06:16,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:16,415 INFO L93 Difference]: Finished difference Result 18637 states and 27303 transitions. [2020-10-15 04:06:16,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:16,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-15 04:06:16,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:16,478 INFO L225 Difference]: With dead ends: 18637 [2020-10-15 04:06:16,478 INFO L226 Difference]: Without dead ends: 12309 [2020-10-15 04:06:16,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:06:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12309 states. [2020-10-15 04:06:17,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12309 to 12307. [2020-10-15 04:06:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12307 states. [2020-10-15 04:06:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12307 states to 12307 states and 17847 transitions. [2020-10-15 04:06:17,276 INFO L78 Accepts]: Start accepts. Automaton has 12307 states and 17847 transitions. Word has length 158 [2020-10-15 04:06:17,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:17,277 INFO L479 AbstractCegarLoop]: Abstraction has 12307 states and 17847 transitions. [2020-10-15 04:06:17,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:06:17,277 INFO L276 IsEmpty]: Start isEmpty. Operand 12307 states and 17847 transitions. [2020-10-15 04:06:17,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-15 04:06:17,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:17,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:17,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:06:17,305 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:17,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:17,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1065338501, now seen corresponding path program 1 times [2020-10-15 04:06:17,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:17,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786802817] [2020-10-15 04:06:17,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:17,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:17,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:17,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:17,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:17,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:17,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:17,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:17,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:20,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:22,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:22,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-15 04:06:22,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:06:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:06:22,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:22,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:06:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 04:06:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:22,598 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:06:22,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:22,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:22,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:22,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:22,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:22,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:06:22,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:22,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:22,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:22,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786802817] [2020-10-15 04:06:22,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:22,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:22,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98352524] [2020-10-15 04:06:22,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:22,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:22,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:22,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:22,755 INFO L87 Difference]: Start difference. First operand 12307 states and 17847 transitions. Second operand 5 states. [2020-10-15 04:06:25,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:25,967 INFO L93 Difference]: Finished difference Result 32814 states and 47480 transitions. [2020-10-15 04:06:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:25,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-15 04:06:25,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:26,030 INFO L225 Difference]: With dead ends: 32814 [2020-10-15 04:06:26,030 INFO L226 Difference]: Without dead ends: 21132 [2020-10-15 04:06:26,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:06:26,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21132 states. [2020-10-15 04:06:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21132 to 21130. [2020-10-15 04:06:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21130 states. [2020-10-15 04:06:27,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21130 states to 21130 states and 30162 transitions. [2020-10-15 04:06:27,221 INFO L78 Accepts]: Start accepts. Automaton has 21130 states and 30162 transitions. Word has length 159 [2020-10-15 04:06:27,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:27,222 INFO L479 AbstractCegarLoop]: Abstraction has 21130 states and 30162 transitions. [2020-10-15 04:06:27,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:06:27,222 INFO L276 IsEmpty]: Start isEmpty. Operand 21130 states and 30162 transitions. [2020-10-15 04:06:27,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-15 04:06:27,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:27,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:27,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:06:27,251 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:27,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:27,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1902159313, now seen corresponding path program 1 times [2020-10-15 04:06:27,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:27,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740978715] [2020-10-15 04:06:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:27,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:27,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:27,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:27,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:27,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:27,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:27,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:32,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:32,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-15 04:06:32,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:06:32,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 04:06:32,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:32,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:06:32,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 04:06:32,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:32,643 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:06:32,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:32,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:32,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:32,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:32,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:06:32,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:32,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:32,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:32,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:32,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740978715] [2020-10-15 04:06:32,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:32,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:32,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380957067] [2020-10-15 04:06:32,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:32,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:32,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:32,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:32,731 INFO L87 Difference]: Start difference. First operand 21130 states and 30162 transitions. Second operand 5 states. [2020-10-15 04:06:36,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:36,152 INFO L93 Difference]: Finished difference Result 57947 states and 82376 transitions. [2020-10-15 04:06:36,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:36,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-15 04:06:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:36,214 INFO L225 Difference]: With dead ends: 57947 [2020-10-15 04:06:36,214 INFO L226 Difference]: Without dead ends: 36830 [2020-10-15 04:06:36,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:06:36,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36830 states. [2020-10-15 04:06:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36830 to 36828. [2020-10-15 04:06:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36828 states. [2020-10-15 04:06:38,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36828 states to 36828 states and 51819 transitions. [2020-10-15 04:06:38,014 INFO L78 Accepts]: Start accepts. Automaton has 36828 states and 51819 transitions. Word has length 160 [2020-10-15 04:06:38,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:38,015 INFO L479 AbstractCegarLoop]: Abstraction has 36828 states and 51819 transitions. [2020-10-15 04:06:38,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:06:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 36828 states and 51819 transitions. [2020-10-15 04:06:38,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-15 04:06:38,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:38,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:38,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:06:38,051 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:38,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:38,052 INFO L82 PathProgramCache]: Analyzing trace with hash 602905306, now seen corresponding path program 1 times [2020-10-15 04:06:38,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:38,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139939836] [2020-10-15 04:06:38,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:38,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:38,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:38,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:38,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:38,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:41,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:43,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:43,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-15 04:06:43,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:06:43,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:06:43,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:43,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:06:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 04:06:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:43,329 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:06:43,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:43,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:43,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:43,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:06:43,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:43,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:43,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:43,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:43,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:43,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:43,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139939836] [2020-10-15 04:06:43,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:43,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:43,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582606467] [2020-10-15 04:06:43,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:43,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:43,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:43,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:43,391 INFO L87 Difference]: Start difference. First operand 36828 states and 51819 transitions. Second operand 5 states. [2020-10-15 04:06:48,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:06:48,390 INFO L93 Difference]: Finished difference Result 100539 states and 140978 transitions. [2020-10-15 04:06:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:06:48,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-15 04:06:48,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:06:48,477 INFO L225 Difference]: With dead ends: 100539 [2020-10-15 04:06:48,477 INFO L226 Difference]: Without dead ends: 64189 [2020-10-15 04:06:48,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:06:48,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64189 states. [2020-10-15 04:06:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64189 to 64187. [2020-10-15 04:06:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64187 states. [2020-10-15 04:06:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64187 states to 64187 states and 89039 transitions. [2020-10-15 04:06:51,480 INFO L78 Accepts]: Start accepts. Automaton has 64187 states and 89039 transitions. Word has length 161 [2020-10-15 04:06:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:06:51,480 INFO L479 AbstractCegarLoop]: Abstraction has 64187 states and 89039 transitions. [2020-10-15 04:06:51,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:06:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 64187 states and 89039 transitions. [2020-10-15 04:06:51,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-15 04:06:51,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:06:51,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:06:51,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:06:51,520 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:06:51,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:06:51,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1688150126, now seen corresponding path program 1 times [2020-10-15 04:06:51,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:06:51,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289643647] [2020-10-15 04:06:51,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:06:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:53,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:53,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:53,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:53,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:56,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:56,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-15 04:06:56,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:06:56,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:06:56,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:56,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:56,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:06:56,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 04:06:56,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 04:06:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:06:56,849 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:06:56,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:06:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:06:56,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:06:56,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:06:56,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:06:56,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:06:56,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 04:06:56,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:06:56,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:06:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:06:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:06:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:06:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:06:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:06:56,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289643647] [2020-10-15 04:06:56,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:06:56,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:06:56,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918063743] [2020-10-15 04:06:56,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:06:56,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:06:56,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:06:56,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:06:56,915 INFO L87 Difference]: Start difference. First operand 64187 states and 89039 transitions. Second operand 5 states. [2020-10-15 04:07:00,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:00,285 INFO L93 Difference]: Finished difference Result 110258 states and 153347 transitions. [2020-10-15 04:07:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:07:00,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-15 04:07:00,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:00,333 INFO L225 Difference]: With dead ends: 110258 [2020-10-15 04:07:00,333 INFO L226 Difference]: Without dead ends: 47178 [2020-10-15 04:07:00,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:07:00,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47178 states. [2020-10-15 04:07:02,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47178 to 47177. [2020-10-15 04:07:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47177 states. [2020-10-15 04:07:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47177 states to 47177 states and 65543 transitions. [2020-10-15 04:07:02,328 INFO L78 Accepts]: Start accepts. Automaton has 47177 states and 65543 transitions. Word has length 162 [2020-10-15 04:07:02,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:02,328 INFO L479 AbstractCegarLoop]: Abstraction has 47177 states and 65543 transitions. [2020-10-15 04:07:02,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand 47177 states and 65543 transitions. [2020-10-15 04:07:02,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-15 04:07:02,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:02,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:07:02,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:07:02,530 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:02,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:02,531 INFO L82 PathProgramCache]: Analyzing trace with hash -878525877, now seen corresponding path program 1 times [2020-10-15 04:07:02,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:02,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422181180] [2020-10-15 04:07:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:02,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:02,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:04,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:07,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:07,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 04:07:07,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:07:07,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:07:07,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:07,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:07,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:07,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:07:07,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 04:07:07,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:07,838 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:07:07,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:07,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:07,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:07,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:07,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:07:07,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:07,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:07,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:07:07,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422181180] [2020-10-15 04:07:07,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:07,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:07,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857817834] [2020-10-15 04:07:07,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:07,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:07,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:07,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:07,886 INFO L87 Difference]: Start difference. First operand 47177 states and 65543 transitions. Second operand 5 states. [2020-10-15 04:07:08,115 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-15 04:07:13,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:13,073 INFO L93 Difference]: Finished difference Result 83616 states and 116245 transitions. [2020-10-15 04:07:13,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:07:13,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-15 04:07:13,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:13,119 INFO L225 Difference]: With dead ends: 83616 [2020-10-15 04:07:13,119 INFO L226 Difference]: Without dead ends: 47179 [2020-10-15 04:07:13,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:07:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47179 states. [2020-10-15 04:07:15,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47179 to 47177. [2020-10-15 04:07:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47177 states. [2020-10-15 04:07:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47177 states to 47177 states and 65338 transitions. [2020-10-15 04:07:15,576 INFO L78 Accepts]: Start accepts. Automaton has 47177 states and 65338 transitions. Word has length 164 [2020-10-15 04:07:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:15,576 INFO L479 AbstractCegarLoop]: Abstraction has 47177 states and 65338 transitions. [2020-10-15 04:07:15,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 47177 states and 65338 transitions. [2020-10-15 04:07:15,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-15 04:07:15,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:15,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:07:15,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:07:15,609 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:15,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:15,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2046753114, now seen corresponding path program 1 times [2020-10-15 04:07:15,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:15,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241651247] [2020-10-15 04:07:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:15,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:15,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:15,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:15,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:15,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:20,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:20,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-15 04:07:20,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:07:20,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:07:20,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:20,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:07:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:07:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-15 04:07:20,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:20,927 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:07:20,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:20,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:20,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:20,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:20,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:20,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:07:20,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:20,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:07:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:07:20,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:07:21,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241651247] [2020-10-15 04:07:21,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:21,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 04:07:21,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544123198] [2020-10-15 04:07:21,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:07:21,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:21,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:07:21,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:07:21,013 INFO L87 Difference]: Start difference. First operand 47177 states and 65338 transitions. Second operand 9 states. [2020-10-15 04:07:21,260 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:07:31,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:31,000 INFO L93 Difference]: Finished difference Result 173355 states and 250896 transitions. [2020-10-15 04:07:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:07:31,001 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-10-15 04:07:31,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:31,228 INFO L225 Difference]: With dead ends: 173355 [2020-10-15 04:07:31,228 INFO L226 Difference]: Without dead ends: 130207 [2020-10-15 04:07:31,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-15 04:07:31,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130207 states. [2020-10-15 04:07:38,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130207 to 75811. [2020-10-15 04:07:38,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75811 states. [2020-10-15 04:07:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75811 states to 75811 states and 106894 transitions. [2020-10-15 04:07:38,143 INFO L78 Accepts]: Start accepts. Automaton has 75811 states and 106894 transitions. Word has length 165 [2020-10-15 04:07:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:38,144 INFO L479 AbstractCegarLoop]: Abstraction has 75811 states and 106894 transitions. [2020-10-15 04:07:38,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:07:38,144 INFO L276 IsEmpty]: Start isEmpty. Operand 75811 states and 106894 transitions. [2020-10-15 04:07:38,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-15 04:07:38,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:38,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:07:38,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:07:38,165 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:38,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:38,166 INFO L82 PathProgramCache]: Analyzing trace with hash 112379292, now seen corresponding path program 1 times [2020-10-15 04:07:38,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:38,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394469344] [2020-10-15 04:07:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:38,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:38,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:38,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:38,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:38,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:38,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:43,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:43,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-15 04:07:43,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:07:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 04:07:43,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:43,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 04:07:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 04:07:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:43,464 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:07:43,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:43,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:43,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:43,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:43,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:43,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:07:43,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:43,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:43,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:43,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:07:43,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394469344] [2020-10-15 04:07:43,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:43,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:43,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366527389] [2020-10-15 04:07:43,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:43,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:43,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:43,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:43,505 INFO L87 Difference]: Start difference. First operand 75811 states and 106894 transitions. Second operand 5 states. [2020-10-15 04:07:48,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:07:48,578 INFO L93 Difference]: Finished difference Result 132098 states and 186335 transitions. [2020-10-15 04:07:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:07:48,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-15 04:07:48,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:07:48,640 INFO L225 Difference]: With dead ends: 132098 [2020-10-15 04:07:48,640 INFO L226 Difference]: Without dead ends: 56846 [2020-10-15 04:07:48,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:07:48,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56846 states. [2020-10-15 04:07:52,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56846 to 56846. [2020-10-15 04:07:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56846 states. [2020-10-15 04:07:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56846 states to 56846 states and 80077 transitions. [2020-10-15 04:07:52,290 INFO L78 Accepts]: Start accepts. Automaton has 56846 states and 80077 transitions. Word has length 165 [2020-10-15 04:07:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:07:52,290 INFO L479 AbstractCegarLoop]: Abstraction has 56846 states and 80077 transitions. [2020-10-15 04:07:52,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:07:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand 56846 states and 80077 transitions. [2020-10-15 04:07:52,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-15 04:07:52,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:07:52,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:07:52,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:07:52,304 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:07:52,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:07:52,304 INFO L82 PathProgramCache]: Analyzing trace with hash -2093518404, now seen corresponding path program 1 times [2020-10-15 04:07:52,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:07:52,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603699968] [2020-10-15 04:07:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:07:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:52,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:52,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:52,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:52,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:52,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:52,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:52,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:52,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:52,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:57,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:57,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-15 04:07:57,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:07:57,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:07:57,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:57,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:07:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:07:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 04:07:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:57,590 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:07:57,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:07:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:07:57,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:07:57,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:07:57,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:07:57,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:07:57,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:07:57,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:07:57,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:07:57,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:07:57,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:07:57,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:07:57,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:07:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:07:57,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603699968] [2020-10-15 04:07:57,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:07:57,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:07:57,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515013438] [2020-10-15 04:07:57,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:07:57,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:07:57,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:07:57,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:07:57,635 INFO L87 Difference]: Start difference. First operand 56846 states and 80077 transitions. Second operand 5 states. [2020-10-15 04:07:57,879 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-15 04:08:03,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:08:03,871 INFO L93 Difference]: Finished difference Result 98005 states and 138360 transitions. [2020-10-15 04:08:03,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:08:03,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-15 04:08:03,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:08:03,942 INFO L225 Difference]: With dead ends: 98005 [2020-10-15 04:08:03,943 INFO L226 Difference]: Without dead ends: 56844 [2020-10-15 04:08:03,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:08:04,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56844 states. [2020-10-15 04:08:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56844 to 56842. [2020-10-15 04:08:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56842 states. [2020-10-15 04:08:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56842 states to 56842 states and 79759 transitions. [2020-10-15 04:08:07,810 INFO L78 Accepts]: Start accepts. Automaton has 56842 states and 79759 transitions. Word has length 168 [2020-10-15 04:08:07,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:07,810 INFO L479 AbstractCegarLoop]: Abstraction has 56842 states and 79759 transitions. [2020-10-15 04:08:07,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:08:07,810 INFO L276 IsEmpty]: Start isEmpty. Operand 56842 states and 79759 transitions. [2020-10-15 04:08:07,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-15 04:08:07,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:07,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:08:07,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:08:07,825 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:07,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:07,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1890066073, now seen corresponding path program 1 times [2020-10-15 04:08:07,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:07,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080684937] [2020-10-15 04:08:07,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:07,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:07,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:07,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:12,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:12,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-15 04:08:12,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:08:12,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 04:08:12,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:12,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:08:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:08:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 04:08:12,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:13,152 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:08:13,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:13,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:13,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:13,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:13,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:13,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:08:13,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:13,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:13,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:08:13,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:13,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:08:13,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:08:13,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080684937] [2020-10-15 04:08:13,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:13,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 04:08:13,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355211126] [2020-10-15 04:08:13,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:08:13,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:13,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:08:13,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:08:13,212 INFO L87 Difference]: Start difference. First operand 56842 states and 79759 transitions. Second operand 9 states. [2020-10-15 04:08:13,466 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:08:29,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:08:29,638 INFO L93 Difference]: Finished difference Result 239666 states and 344591 transitions. [2020-10-15 04:08:29,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:08:29,639 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-10-15 04:08:29,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:08:29,900 INFO L225 Difference]: With dead ends: 239666 [2020-10-15 04:08:29,902 INFO L226 Difference]: Without dead ends: 184184 [2020-10-15 04:08:29,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-15 04:08:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184184 states. [2020-10-15 04:08:38,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184184 to 76254. [2020-10-15 04:08:38,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76254 states. [2020-10-15 04:08:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76254 states to 76254 states and 106627 transitions. [2020-10-15 04:08:38,920 INFO L78 Accepts]: Start accepts. Automaton has 76254 states and 106627 transitions. Word has length 169 [2020-10-15 04:08:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:38,921 INFO L479 AbstractCegarLoop]: Abstraction has 76254 states and 106627 transitions. [2020-10-15 04:08:38,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:08:38,921 INFO L276 IsEmpty]: Start isEmpty. Operand 76254 states and 106627 transitions. [2020-10-15 04:08:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-15 04:08:38,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:38,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:08:38,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:08:38,942 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:38,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:38,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1357679095, now seen corresponding path program 1 times [2020-10-15 04:08:38,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:38,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351701916] [2020-10-15 04:08:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:39,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:39,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:39,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:39,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:43,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:43,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-15 04:08:43,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:08:43,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 04:08:43,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:43,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:43,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:08:43,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 04:08:43,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 04:08:43,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:44,240 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 04:08:44,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:44,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:44,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:44,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:44,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:44,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:08:44,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:44,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:08:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:08:44,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:08:44,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351701916] [2020-10-15 04:08:44,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:44,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:08:44,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001300402] [2020-10-15 04:08:44,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:08:44,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:44,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:08:44,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:08:44,285 INFO L87 Difference]: Start difference. First operand 76254 states and 106627 transitions. Second operand 5 states. [2020-10-15 04:08:50,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:08:50,752 INFO L93 Difference]: Finished difference Result 143126 states and 200142 transitions. [2020-10-15 04:08:50,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:08:50,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-15 04:08:50,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:08:50,829 INFO L225 Difference]: With dead ends: 143126 [2020-10-15 04:08:50,829 INFO L226 Difference]: Without dead ends: 67199 [2020-10-15 04:08:50,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:08:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67199 states. [2020-10-15 04:08:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67199 to 67199. [2020-10-15 04:08:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67199 states. [2020-10-15 04:08:56,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67199 states to 67199 states and 93867 transitions. [2020-10-15 04:08:56,358 INFO L78 Accepts]: Start accepts. Automaton has 67199 states and 93867 transitions. Word has length 169 [2020-10-15 04:08:56,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:56,359 INFO L479 AbstractCegarLoop]: Abstraction has 67199 states and 93867 transitions. [2020-10-15 04:08:56,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:08:56,359 INFO L276 IsEmpty]: Start isEmpty. Operand 67199 states and 93867 transitions. [2020-10-15 04:08:56,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-15 04:08:56,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:56,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:08:56,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:08:56,378 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:56,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:56,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1364761597, now seen corresponding path program 1 times [2020-10-15 04:08:56,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:56,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102089172] [2020-10-15 04:08:56,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:56,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:56,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:56,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:56,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:56,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:56,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking...