/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.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:08:03,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:08:03,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:08:03,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:08:03,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:08:03,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:08:03,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:08:03,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:08:03,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:08:03,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:08:03,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:08:03,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:08:03,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:08:03,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:08:03,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:08:03,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:08:03,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:08:03,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:08:03,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:08:03,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:08:03,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:08:03,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:08:03,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:08:03,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:08:03,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:08:03,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:08:03,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:08:03,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:08:03,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:08:03,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:08:03,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:08:03,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:08:03,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:08:04,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:08:04,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:08:04,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:08:04,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:08:04,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:08:04,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:08:04,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:08:04,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:08:04,007 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 04:08:04,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:08:04,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:08:04,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:08:04,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:08:04,055 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:08:04,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:08:04,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:08:04,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:08:04,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:08:04,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:08:04,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:08:04,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:08:04,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:08:04,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:08:04,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:08:04,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:08:04,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:08:04,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:08:04,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:08:04,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:08:04,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:08:04,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:08:04,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:08:04,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:08:04,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:08:04,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:08:04,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:08:04,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:08:04,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:08:04,062 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 04:08:04,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:08:04,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:08:04,401 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:08:04,403 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:08:04,403 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:08:04,404 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 04:08:04,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2563d92a0/99c556a2e8434ea0968d6e7a98c2b94d/FLAGab25b50d1 [2020-10-15 04:08:04,997 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:08:04,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 04:08:05,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2563d92a0/99c556a2e8434ea0968d6e7a98c2b94d/FLAGab25b50d1 [2020-10-15 04:08:05,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2563d92a0/99c556a2e8434ea0968d6e7a98c2b94d [2020-10-15 04:08:05,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:08:05,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:08:05,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:08:05,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:08:05,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:08:05,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:08:05" (1/1) ... [2020-10-15 04:08:05,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44452bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:08:05, skipping insertion in model container [2020-10-15 04:08:05,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:08:05" (1/1) ... [2020-10-15 04:08:05,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:08:05,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:08:05,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:08:05,887 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:08:06,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:08:06,101 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:08:06,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:08:06 WrapperNode [2020-10-15 04:08:06,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:08:06,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:08:06,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:08:06,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:08:06,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:08:06" (1/1) ... [2020-10-15 04:08:06,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:08:06" (1/1) ... [2020-10-15 04:08:06,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:08:06" (1/1) ... [2020-10-15 04:08:06,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:08:06" (1/1) ... [2020-10-15 04:08:06,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:08:06" (1/1) ... [2020-10-15 04:08:06,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:08:06" (1/1) ... [2020-10-15 04:08:06,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:08:06" (1/1) ... [2020-10-15 04:08:06,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:08:06,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:08:06,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:08:06,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:08:06,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:08:06" (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 04:08:06,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:08:06,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:08:06,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:08:06,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:08:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:08:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:08:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:08:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:08:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:08:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:08:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:08:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:08:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:08:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:08:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:08:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:08:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:08:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:08:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:08:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:08:06,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:08:07,954 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:08:07,954 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:08:07,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:08:07 BoogieIcfgContainer [2020-10-15 04:08:07,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:08:07,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:08:07,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:08:07,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:08:07,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:08:05" (1/3) ... [2020-10-15 04:08:07,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f40960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:08:07, skipping insertion in model container [2020-10-15 04:08:07,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:08:06" (2/3) ... [2020-10-15 04:08:07,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f40960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:08:07, skipping insertion in model container [2020-10-15 04:08:07,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:08:07" (3/3) ... [2020-10-15 04:08:07,970 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-15 04:08:07,980 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:08:07,989 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:08:08,003 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:08:08,031 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:08:08,031 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:08:08,031 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:08:08,032 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:08:08,032 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:08:08,032 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:08:08,032 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:08:08,032 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:08:08,057 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-10-15 04:08:08,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 04:08:08,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:08,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:08:08,076 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:08,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:08,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1511443852, now seen corresponding path program 1 times [2020-10-15 04:08:08,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:08,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547493472] [2020-10-15 04:08:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:08,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:09,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:09,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:10,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:10,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:13,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:13,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 04:08:13,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:08:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:08:13,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:13,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:08:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 04:08:13,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 04:08:13,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:08:14,369 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:08:14,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:14,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:14,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:14,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:14,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 04:08:14,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:14,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:14,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:08:14,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:14,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:08:14,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:08:14,453 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 04:08:14,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547493472] [2020-10-15 04:08:14,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:14,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:08:14,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061986024] [2020-10-15 04:08:14,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:08:14,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:14,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:08:14,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:08:14,481 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 4 states. [2020-10-15 04:08:15,117 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2020-10-15 04:08:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:08:17,666 INFO L93 Difference]: Finished difference Result 637 states and 1102 transitions. [2020-10-15 04:08:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:08:17,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-15 04:08:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:08:17,697 INFO L225 Difference]: With dead ends: 637 [2020-10-15 04:08:17,698 INFO L226 Difference]: Without dead ends: 479 [2020-10-15 04:08:17,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:08:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-15 04:08:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 477. [2020-10-15 04:08:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-15 04:08:17,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 791 transitions. [2020-10-15 04:08:17,833 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 791 transitions. Word has length 122 [2020-10-15 04:08:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:17,834 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 791 transitions. [2020-10-15 04:08:17,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:08:17,834 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 791 transitions. [2020-10-15 04:08:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 04:08:17,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:17,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:08:17,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:08:17,847 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:17,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2121484750, now seen corresponding path program 1 times [2020-10-15 04:08:17,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:17,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924675086] [2020-10-15 04:08:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:18,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:18,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:18,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:19,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:19,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:20,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:20,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:22,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:23,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 04:08:23,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:08:23,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-15 04:08:23,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:23,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:08:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:08:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 04:08:23,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:08:23,799 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:08:23,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:23,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:23,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:23,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 04:08:23,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:23,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:08:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:08:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:08:23,991 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 04:08:23,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924675086] [2020-10-15 04:08:23,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:23,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:08:23,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23116874] [2020-10-15 04:08:23,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:08:23,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:23,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:08:23,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:08:23,999 INFO L87 Difference]: Start difference. First operand 477 states and 791 transitions. Second operand 5 states. [2020-10-15 04:08:26,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:08:26,820 INFO L93 Difference]: Finished difference Result 1337 states and 2210 transitions. [2020-10-15 04:08:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:08:26,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-15 04:08:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:08:26,827 INFO L225 Difference]: With dead ends: 1337 [2020-10-15 04:08:26,827 INFO L226 Difference]: Without dead ends: 907 [2020-10-15 04:08:26,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:08:26,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2020-10-15 04:08:26,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 905. [2020-10-15 04:08:26,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-15 04:08:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1490 transitions. [2020-10-15 04:08:26,879 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1490 transitions. Word has length 125 [2020-10-15 04:08:26,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:26,879 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1490 transitions. [2020-10-15 04:08:26,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:08:26,880 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1490 transitions. [2020-10-15 04:08:26,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 04:08:26,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:26,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:08:26,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:08:26,884 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:26,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:26,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1490826395, now seen corresponding path program 1 times [2020-10-15 04:08:26,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:26,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834465855] [2020-10-15 04:08:26,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:27,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:27,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:27,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:28,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:28,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:31,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:31,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 04:08:31,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:08:31,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-15 04:08:31,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:31,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:08:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:08:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-15 04:08:31,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:08:32,719 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:08:32,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:32,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:32,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:32,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:32,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:08:32,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:32,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:08:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:08:32,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:08:32,819 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 04:08:32,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834465855] [2020-10-15 04:08:32,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:32,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:08:32,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091418654] [2020-10-15 04:08:32,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:08:32,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:32,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:08:32,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:08:32,825 INFO L87 Difference]: Start difference. First operand 905 states and 1490 transitions. Second operand 5 states. [2020-10-15 04:08:35,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:08:35,527 INFO L93 Difference]: Finished difference Result 2630 states and 4326 transitions. [2020-10-15 04:08:35,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:08:35,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-15 04:08:35,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:08:35,543 INFO L225 Difference]: With dead ends: 2630 [2020-10-15 04:08:35,543 INFO L226 Difference]: Without dead ends: 1766 [2020-10-15 04:08:35,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:08:35,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2020-10-15 04:08:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1764. [2020-10-15 04:08:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1764 states. [2020-10-15 04:08:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2892 transitions. [2020-10-15 04:08:35,706 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2892 transitions. Word has length 126 [2020-10-15 04:08:35,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:35,708 INFO L479 AbstractCegarLoop]: Abstraction has 1764 states and 2892 transitions. [2020-10-15 04:08:35,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:08:35,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2892 transitions. [2020-10-15 04:08:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 04:08:35,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:35,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:08:35,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:08:35,719 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:35,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:35,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1878957826, now seen corresponding path program 1 times [2020-10-15 04:08:35,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:35,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212627264] [2020-10-15 04:08:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:35,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:35,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:36,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:36,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:36,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:37,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:37,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:37,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:40,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:40,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 04:08:40,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:08:40,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-15 04:08:40,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:40,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:08:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:08:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 04:08:40,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:08:41,561 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:08:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:41,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:41,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:41,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:41,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:41,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:08:41,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:41,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:41,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:08:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:08:41,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:08:41,669 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 04:08:41,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212627264] [2020-10-15 04:08:41,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:41,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:08:41,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182041225] [2020-10-15 04:08:41,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:08:41,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:41,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:08:41,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:08:41,674 INFO L87 Difference]: Start difference. First operand 1764 states and 2892 transitions. Second operand 5 states. [2020-10-15 04:08:44,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:08:44,421 INFO L93 Difference]: Finished difference Result 5018 states and 8198 transitions. [2020-10-15 04:08:44,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:08:44,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-15 04:08:44,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:08:44,440 INFO L225 Difference]: With dead ends: 5018 [2020-10-15 04:08:44,440 INFO L226 Difference]: Without dead ends: 3415 [2020-10-15 04:08:44,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:08:44,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2020-10-15 04:08:44,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 3413. [2020-10-15 04:08:44,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3413 states. [2020-10-15 04:08:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 5568 transitions. [2020-10-15 04:08:44,703 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 5568 transitions. Word has length 126 [2020-10-15 04:08:44,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:44,704 INFO L479 AbstractCegarLoop]: Abstraction has 3413 states and 5568 transitions. [2020-10-15 04:08:44,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:08:44,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 5568 transitions. [2020-10-15 04:08:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-15 04:08:44,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:44,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:08:44,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:08:44,716 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:44,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:44,716 INFO L82 PathProgramCache]: Analyzing trace with hash 76230140, now seen corresponding path program 1 times [2020-10-15 04:08:44,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:44,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493111996] [2020-10-15 04:08:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:44,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:45,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:45,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:45,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:46,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:49,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:49,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 04:08:49,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:08:49,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 04:08:49,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:49,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:08:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:08:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 04:08:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:08:50,434 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:08:50,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:50,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:50,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:50,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:50,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:08:50,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:50,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:08:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:08:50,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:08:50,582 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 04:08:50,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493111996] [2020-10-15 04:08:50,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:50,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:08:50,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062893697] [2020-10-15 04:08:50,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:08:50,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:50,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:08:50,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:08:50,586 INFO L87 Difference]: Start difference. First operand 3413 states and 5568 transitions. Second operand 5 states. [2020-10-15 04:08:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:08:53,477 INFO L93 Difference]: Finished difference Result 9915 states and 16137 transitions. [2020-10-15 04:08:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:08:53,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-15 04:08:53,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:08:53,513 INFO L225 Difference]: With dead ends: 9915 [2020-10-15 04:08:53,513 INFO L226 Difference]: Without dead ends: 6707 [2020-10-15 04:08:53,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:08:53,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6707 states. [2020-10-15 04:08:54,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6707 to 6705. [2020-10-15 04:08:54,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6705 states. [2020-10-15 04:08:54,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6705 states to 6705 states and 10879 transitions. [2020-10-15 04:08:54,043 INFO L78 Accepts]: Start accepts. Automaton has 6705 states and 10879 transitions. Word has length 127 [2020-10-15 04:08:54,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:08:54,044 INFO L479 AbstractCegarLoop]: Abstraction has 6705 states and 10879 transitions. [2020-10-15 04:08:54,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:08:54,044 INFO L276 IsEmpty]: Start isEmpty. Operand 6705 states and 10879 transitions. [2020-10-15 04:08:54,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-15 04:08:54,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:08:54,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:08:54,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:08:54,057 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:08:54,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:08:54,057 INFO L82 PathProgramCache]: Analyzing trace with hash 883561477, now seen corresponding path program 1 times [2020-10-15 04:08:54,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:08:54,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714898219] [2020-10-15 04:08:54,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:08:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:54,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:54,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:55,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:55,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:55,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:59,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:59,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 04:08:59,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:08:59,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:08:59,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:59,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:08:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:08:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-15 04:08:59,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:08:59,616 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:08:59,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:08:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:08:59,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:08:59,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:08:59,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:08:59,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:08:59,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:08:59,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:08:59,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:08:59,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:08:59,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:08:59,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:08:59,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:08:59,709 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 04:08:59,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714898219] [2020-10-15 04:08:59,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:08:59,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:08:59,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712268429] [2020-10-15 04:08:59,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:08:59,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:08:59,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:08:59,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:08:59,713 INFO L87 Difference]: Start difference. First operand 6705 states and 10879 transitions. Second operand 5 states. [2020-10-15 04:09:02,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:02,565 INFO L93 Difference]: Finished difference Result 19425 states and 31446 transitions. [2020-10-15 04:09:02,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:09:02,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-15 04:09:02,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:02,623 INFO L225 Difference]: With dead ends: 19425 [2020-10-15 04:09:02,623 INFO L226 Difference]: Without dead ends: 12927 [2020-10-15 04:09:02,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:09:02,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12927 states. [2020-10-15 04:09:03,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12927 to 12925. [2020-10-15 04:09:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12925 states. [2020-10-15 04:09:03,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12925 states to 12925 states and 20824 transitions. [2020-10-15 04:09:03,621 INFO L78 Accepts]: Start accepts. Automaton has 12925 states and 20824 transitions. Word has length 127 [2020-10-15 04:09:03,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:03,621 INFO L479 AbstractCegarLoop]: Abstraction has 12925 states and 20824 transitions. [2020-10-15 04:09:03,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:09:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 12925 states and 20824 transitions. [2020-10-15 04:09:03,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 04:09:03,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:03,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:09:03,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:09:03,644 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:03,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:03,645 INFO L82 PathProgramCache]: Analyzing trace with hash -989727288, now seen corresponding path program 1 times [2020-10-15 04:09:03,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:03,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329257185] [2020-10-15 04:09:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:03,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:03,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:03,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:04,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:04,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:07,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:07,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 04:09:07,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:09:07,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4151 [2020-10-15 04:09:07,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:07,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:09:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 04:09:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:09:07,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:08,249 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:09:08,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:08,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:08,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:08,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:08,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:08,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:09:08,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:08,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:08,302 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 04:09:08,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329257185] [2020-10-15 04:09:08,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:08,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:09:08,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901611492] [2020-10-15 04:09:08,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:09:08,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:08,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:09:08,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:09:08,304 INFO L87 Difference]: Start difference. First operand 12925 states and 20824 transitions. Second operand 4 states. [2020-10-15 04:09:08,706 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2020-10-15 04:09:11,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:11,486 INFO L93 Difference]: Finished difference Result 28129 states and 46138 transitions. [2020-10-15 04:09:11,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:09:11,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-15 04:09:11,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:11,536 INFO L225 Difference]: With dead ends: 28129 [2020-10-15 04:09:11,536 INFO L226 Difference]: Without dead ends: 20159 [2020-10-15 04:09:11,557 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 04:09:11,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20159 states. [2020-10-15 04:09:13,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20159 to 20157. [2020-10-15 04:09:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20157 states. [2020-10-15 04:09:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20157 states to 20157 states and 32504 transitions. [2020-10-15 04:09:13,557 INFO L78 Accepts]: Start accepts. Automaton has 20157 states and 32504 transitions. Word has length 128 [2020-10-15 04:09:13,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:13,558 INFO L479 AbstractCegarLoop]: Abstraction has 20157 states and 32504 transitions. [2020-10-15 04:09:13,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:09:13,558 INFO L276 IsEmpty]: Start isEmpty. Operand 20157 states and 32504 transitions. [2020-10-15 04:09:13,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-15 04:09:13,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:13,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:09:13,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:09:13,582 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:13,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:13,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1339743589, now seen corresponding path program 1 times [2020-10-15 04:09:13,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:13,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783655357] [2020-10-15 04:09:13,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:13,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:13,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:13,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:16,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:16,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:18,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:18,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-15 04:09:18,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:09:18,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-15 04:09:18,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:18,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:09:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:09:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 04:09:18,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:19,104 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:09:19,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:19,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:19,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:19,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:19,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:19,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:09:19,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:19,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:19,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:19,170 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 04:09:19,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783655357] [2020-10-15 04:09:19,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:19,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:09:19,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830947243] [2020-10-15 04:09:19,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:09:19,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:19,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:09:19,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:09:19,172 INFO L87 Difference]: Start difference. First operand 20157 states and 32504 transitions. Second operand 5 states. [2020-10-15 04:09:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:23,766 INFO L93 Difference]: Finished difference Result 59492 states and 95855 transitions. [2020-10-15 04:09:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:09:23,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-15 04:09:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:23,869 INFO L225 Difference]: With dead ends: 59492 [2020-10-15 04:09:23,870 INFO L226 Difference]: Without dead ends: 39508 [2020-10-15 04:09:23,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:09:23,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39508 states. [2020-10-15 04:09:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39508 to 39506. [2020-10-15 04:09:26,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39506 states. [2020-10-15 04:09:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39506 states to 39506 states and 63306 transitions. [2020-10-15 04:09:26,610 INFO L78 Accepts]: Start accepts. Automaton has 39506 states and 63306 transitions. Word has length 132 [2020-10-15 04:09:26,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:26,610 INFO L479 AbstractCegarLoop]: Abstraction has 39506 states and 63306 transitions. [2020-10-15 04:09:26,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:09:26,610 INFO L276 IsEmpty]: Start isEmpty. Operand 39506 states and 63306 transitions. [2020-10-15 04:09:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-15 04:09:26,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:26,644 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] [2020-10-15 04:09:26,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:09:26,645 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:26,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:26,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1728261547, now seen corresponding path program 1 times [2020-10-15 04:09:26,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:26,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137701867] [2020-10-15 04:09:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:26,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:26,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:26,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:26,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:27,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:29,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:29,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:31,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:31,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-15 04:09:31,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:09:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:09:31,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:31,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:31,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:09:31,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:09:31,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 04:09:31,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:32,151 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:09:32,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:32,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:32,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:32,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:32,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:32,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:09:32,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:32,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:32,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:32,205 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 04:09:32,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137701867] [2020-10-15 04:09:32,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:32,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:09:32,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166642888] [2020-10-15 04:09:32,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:09:32,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:32,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:09:32,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:09:32,208 INFO L87 Difference]: Start difference. First operand 39506 states and 63306 transitions. Second operand 5 states. [2020-10-15 04:09:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:40,461 INFO L93 Difference]: Finished difference Result 116069 states and 185813 transitions. [2020-10-15 04:09:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:09:40,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-15 04:09:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:40,646 INFO L225 Difference]: With dead ends: 116069 [2020-10-15 04:09:40,646 INFO L226 Difference]: Without dead ends: 77285 [2020-10-15 04:09:40,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:09:40,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77285 states. [2020-10-15 04:09:46,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77285 to 77283. [2020-10-15 04:09:46,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77283 states. [2020-10-15 04:09:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77283 states to 77283 states and 123203 transitions. [2020-10-15 04:09:46,664 INFO L78 Accepts]: Start accepts. Automaton has 77283 states and 123203 transitions. Word has length 133 [2020-10-15 04:09:46,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:46,664 INFO L479 AbstractCegarLoop]: Abstraction has 77283 states and 123203 transitions. [2020-10-15 04:09:46,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:09:46,665 INFO L276 IsEmpty]: Start isEmpty. Operand 77283 states and 123203 transitions. [2020-10-15 04:09:46,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-15 04:09:46,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:46,716 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] [2020-10-15 04:09:46,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:09:46,716 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:46,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:46,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1199487524, now seen corresponding path program 1 times [2020-10-15 04:09:46,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:46,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909301816] [2020-10-15 04:09:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:46,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:46,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:46,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:47,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:47,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:48,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:49,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:49,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:52,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:52,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-15 04:09:52,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:09:52,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5856 [2020-10-15 04:09:52,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:52,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:09:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:09:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 04:09:52,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:53,063 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:09:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:53,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:53,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:53,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:53,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 04:09:53,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:53,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:09:53,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:09:53,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909301816] [2020-10-15 04:09:53,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:53,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:09:53,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509816436] [2020-10-15 04:09:53,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:09:53,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:53,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:09:53,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:09:53,122 INFO L87 Difference]: Start difference. First operand 77283 states and 123203 transitions. Second operand 5 states. [2020-10-15 04:10:06,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:06,870 INFO L93 Difference]: Finished difference Result 226939 states and 361270 transitions. [2020-10-15 04:10:06,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:06,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-15 04:10:06,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:07,212 INFO L225 Difference]: With dead ends: 226939 [2020-10-15 04:10:07,212 INFO L226 Difference]: Without dead ends: 151269 [2020-10-15 04:10:07,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:10:07,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151269 states. [2020-10-15 04:10:23,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151269 to 151267. [2020-10-15 04:10:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151267 states. [2020-10-15 04:10:23,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151267 states to 151267 states and 239434 transitions. [2020-10-15 04:10:23,642 INFO L78 Accepts]: Start accepts. Automaton has 151267 states and 239434 transitions. Word has length 133 [2020-10-15 04:10:23,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:23,642 INFO L479 AbstractCegarLoop]: Abstraction has 151267 states and 239434 transitions. [2020-10-15 04:10:23,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:10:23,642 INFO L276 IsEmpty]: Start isEmpty. Operand 151267 states and 239434 transitions. [2020-10-15 04:10:23,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-15 04:10:23,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:23,760 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] [2020-10-15 04:10:23,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:10:23,760 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:23,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:23,761 INFO L82 PathProgramCache]: Analyzing trace with hash -979452024, now seen corresponding path program 1 times [2020-10-15 04:10:23,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:23,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260058520] [2020-10-15 04:10:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:23,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:23,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:24,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:25,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:28,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:28,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-15 04:10:28,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:10:28,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 04:10:28,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:28,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:10:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:10:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 04:10:28,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:29,260 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-15 04:10:29,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:29,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:29,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:29,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:29,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:10:29,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:29,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:29,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:29,313 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 04:10:29,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260058520] [2020-10-15 04:10:29,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:29,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:10:29,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568794279] [2020-10-15 04:10:29,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:10:29,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:29,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:10:29,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:29,315 INFO L87 Difference]: Start difference. First operand 151267 states and 239434 transitions. Second operand 5 states. [2020-10-15 04:11:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:00,053 INFO L93 Difference]: Finished difference Result 436873 states and 690054 transitions. [2020-10-15 04:11:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:00,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-15 04:11:00,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:00,875 INFO L225 Difference]: With dead ends: 436873 [2020-10-15 04:11:00,875 INFO L226 Difference]: Without dead ends: 295287 [2020-10-15 04:11:00,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:11:01,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295287 states. [2020-10-15 04:11:35,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295287 to 295285. [2020-10-15 04:11:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295285 states. [2020-10-15 04:11:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295285 states to 295285 states and 464868 transitions. [2020-10-15 04:11:36,150 INFO L78 Accepts]: Start accepts. Automaton has 295285 states and 464868 transitions. Word has length 134 [2020-10-15 04:11:36,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:36,150 INFO L479 AbstractCegarLoop]: Abstraction has 295285 states and 464868 transitions. [2020-10-15 04:11:36,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:11:36,150 INFO L276 IsEmpty]: Start isEmpty. Operand 295285 states and 464868 transitions. [2020-10-15 04:11:36,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-15 04:11:36,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:36,343 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] [2020-10-15 04:11:36,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:11:36,344 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:36,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:36,344 INFO L82 PathProgramCache]: Analyzing trace with hash -30044188, now seen corresponding path program 1 times [2020-10-15 04:11:36,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:36,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464137644] [2020-10-15 04:11:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:36,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:36,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:36,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:36,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:36,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:37,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:37,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:38,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:38,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking...