/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:22:07,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:22:07,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:22:07,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:22:07,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:22:07,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:22:07,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:22:08,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:22:08,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:22:08,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:22:08,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:22:08,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:22:08,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:22:08,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:22:08,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:22:08,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:22:08,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:22:08,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:22:08,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:22:08,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:22:08,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:22:08,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:22:08,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:22:08,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:22:08,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:22:08,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:22:08,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:22:08,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:22:08,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:22:08,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:22:08,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:22:08,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:22:08,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:22:08,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:22:08,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:22:08,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:22:08,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:22:08,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:22:08,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:22:08,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:22:08,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:22:08,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:22:08,051 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:22:08,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:22:08,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:22:08,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:22:08,053 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:22:08,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:22:08,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:22:08,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:22:08,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:22:08,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:22:08,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:22:08,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:22:08,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:22:08,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:22:08,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:22:08,055 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:22:08,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:22:08,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:22:08,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:22:08,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:22:08,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:22:08,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:22:08,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:22:08,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:22:08,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:22:08,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:22:08,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:22:08,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:22:08,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:22:08,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:22:08,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:22:08,372 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:22:08,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:22:08,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:22:08,377 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:22:08,378 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-14 09:22:08,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c273e3fc1/b1599e3cc3154ca7bc6a9d15396e8778/FLAG8d6ae54de [2020-10-14 09:22:09,002 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:22:09,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-14 09:22:09,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c273e3fc1/b1599e3cc3154ca7bc6a9d15396e8778/FLAG8d6ae54de [2020-10-14 09:22:09,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c273e3fc1/b1599e3cc3154ca7bc6a9d15396e8778 [2020-10-14 09:22:09,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:22:09,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:22:09,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:22:09,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:22:09,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:22:09,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:22:09" (1/1) ... [2020-10-14 09:22:09,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a35e781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:09, skipping insertion in model container [2020-10-14 09:22:09,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:22:09" (1/1) ... [2020-10-14 09:22:09,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:22:09,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:22:09,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:22:09,762 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:22:10,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:22:10,033 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:22:10,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10 WrapperNode [2020-10-14 09:22:10,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:22:10,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:22:10,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:22:10,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:22:10,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 09:22:10,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 09:22:10,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 09:22:10,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 09:22:10,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 09:22:10,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 09:22:10,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... [2020-10-14 09:22:10,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:22:10,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:22:10,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:22:10,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:22:10,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:22:10,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:22:10,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:22:10,231 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:22:10,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:22:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:22:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:22:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:22:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:22:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:22:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:22:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:22:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:22:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:22:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:22:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:22:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:22:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:22:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 09:22:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:22:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:22:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:22:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:22:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:22:11,230 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:22:11,230 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:22:11,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:22:11 BoogieIcfgContainer [2020-10-14 09:22:11,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:22:11,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:22:11,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:22:11,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:22:11,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:22:09" (1/3) ... [2020-10-14 09:22:11,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7f083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:22:11, skipping insertion in model container [2020-10-14 09:22:11,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:10" (2/3) ... [2020-10-14 09:22:11,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7f083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:22:11, skipping insertion in model container [2020-10-14 09:22:11,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:22:11" (3/3) ... [2020-10-14 09:22:11,245 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-14 09:22:11,256 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:22:11,264 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:22:11,278 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:22:11,304 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:22:11,305 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:22:11,305 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:22:11,305 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:22:11,305 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:22:11,306 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:22:11,306 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:22:11,306 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:22:11,331 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states. [2020-10-14 09:22:11,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 09:22:11,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:11,345 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] [2020-10-14 09:22:11,345 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:11,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:11,352 INFO L82 PathProgramCache]: Analyzing trace with hash -191598454, now seen corresponding path program 1 times [2020-10-14 09:22:11,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:11,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873553130] [2020-10-14 09:22:11,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:11,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:12,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:16,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:16,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 09:22:16,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:22:16,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:22:16,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:16,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:16,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:16,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 09:22:16,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:22:16,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:22:17,148 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:17,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:17,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:17,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:17,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:17,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:22:17,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:17,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:17,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:17,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873553130] [2020-10-14 09:22:17,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:17,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:17,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174258514] [2020-10-14 09:22:17,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:17,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:17,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:17,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:17,242 INFO L87 Difference]: Start difference. First operand 264 states. Second operand 4 states. [2020-10-14 09:22:17,579 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 09:22:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:18,850 INFO L93 Difference]: Finished difference Result 529 states and 871 transitions. [2020-10-14 09:22:18,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:18,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-14 09:22:18,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:18,869 INFO L225 Difference]: With dead ends: 529 [2020-10-14 09:22:18,870 INFO L226 Difference]: Without dead ends: 400 [2020-10-14 09:22:18,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:18,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-14 09:22:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 398. [2020-10-14 09:22:18,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-14 09:22:18,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 594 transitions. [2020-10-14 09:22:18,949 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 594 transitions. Word has length 101 [2020-10-14 09:22:18,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:18,950 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 594 transitions. [2020-10-14 09:22:18,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:18,950 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 594 transitions. [2020-10-14 09:22:18,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 09:22:18,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:18,955 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] [2020-10-14 09:22:18,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:22:18,955 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:18,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:18,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1985426171, now seen corresponding path program 1 times [2020-10-14 09:22:18,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:18,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894082440] [2020-10-14 09:22:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:19,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:19,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:20,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:20,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 09:22:20,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:22:20,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1374 [2020-10-14 09:22:20,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:20,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:22:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 09:22:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:22:20,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:20,657 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:20,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:20,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:20,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:20,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:20,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:20,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:22:20,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:20,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:20,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894082440] [2020-10-14 09:22:20,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:20,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:22:20,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090662358] [2020-10-14 09:22:20,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:22:20,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:20,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:22:20,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:20,700 INFO L87 Difference]: Start difference. First operand 398 states and 594 transitions. Second operand 5 states. [2020-10-14 09:22:21,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:21,788 INFO L93 Difference]: Finished difference Result 612 states and 932 transitions. [2020-10-14 09:22:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:22:21,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-14 09:22:21,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:21,793 INFO L225 Difference]: With dead ends: 612 [2020-10-14 09:22:21,794 INFO L226 Difference]: Without dead ends: 610 [2020-10-14 09:22:21,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:22:21,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-10-14 09:22:21,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 400. [2020-10-14 09:22:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-14 09:22:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 596 transitions. [2020-10-14 09:22:21,830 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 596 transitions. Word has length 102 [2020-10-14 09:22:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:21,831 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 596 transitions. [2020-10-14 09:22:21,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:22:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 596 transitions. [2020-10-14 09:22:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 09:22:21,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:21,834 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] [2020-10-14 09:22:21,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:22:21,834 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:21,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:21,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1076343338, now seen corresponding path program 1 times [2020-10-14 09:22:21,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:21,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472912876] [2020-10-14 09:22:21,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:22,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:23,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:23,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 09:22:23,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:22:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-10-14 09:22:23,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:23,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:22:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:22:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 09:22:23,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:23,601 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:23,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:23,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:23,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:23,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:23,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:23,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:22:23,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:23,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:23,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:23,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:23,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:23,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:23,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472912876] [2020-10-14 09:22:23,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:23,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:22:23,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471006322] [2020-10-14 09:22:23,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:22:23,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:23,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:22:23,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:23,670 INFO L87 Difference]: Start difference. First operand 400 states and 596 transitions. Second operand 5 states. [2020-10-14 09:22:23,881 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-14 09:22:25,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:25,274 INFO L93 Difference]: Finished difference Result 851 states and 1309 transitions. [2020-10-14 09:22:25,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:22:25,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-14 09:22:25,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:25,282 INFO L225 Difference]: With dead ends: 851 [2020-10-14 09:22:25,283 INFO L226 Difference]: Without dead ends: 619 [2020-10-14 09:22:25,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:22:25,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-10-14 09:22:25,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-10-14 09:22:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-10-14 09:22:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 939 transitions. [2020-10-14 09:22:25,331 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 939 transitions. Word has length 103 [2020-10-14 09:22:25,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:25,332 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 939 transitions. [2020-10-14 09:22:25,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:22:25,333 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 939 transitions. [2020-10-14 09:22:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:22:25,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:25,341 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] [2020-10-14 09:22:25,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:22:25,342 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:25,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:25,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1673013390, now seen corresponding path program 1 times [2020-10-14 09:22:25,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:25,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316666864] [2020-10-14 09:22:25,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:30,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:30,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 09:22:30,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:30,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:22:30,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:30,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 09:22:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 09:22:30,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:30,734 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:30,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:30,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:30,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:30,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:22:30,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:30,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:30,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:30,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:30,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:30,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:30,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316666864] [2020-10-14 09:22:30,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:30,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:30,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687528549] [2020-10-14 09:22:30,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:30,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:30,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:30,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:30,788 INFO L87 Difference]: Start difference. First operand 617 states and 939 transitions. Second operand 4 states. [2020-10-14 09:22:31,106 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:22:32,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:32,411 INFO L93 Difference]: Finished difference Result 1629 states and 2535 transitions. [2020-10-14 09:22:32,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:32,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-14 09:22:32,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:32,422 INFO L225 Difference]: With dead ends: 1629 [2020-10-14 09:22:32,423 INFO L226 Difference]: Without dead ends: 1128 [2020-10-14 09:22:32,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:32,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2020-10-14 09:22:32,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1126. [2020-10-14 09:22:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1126 states. [2020-10-14 09:22:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1730 transitions. [2020-10-14 09:22:32,482 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1730 transitions. Word has length 104 [2020-10-14 09:22:32,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:32,482 INFO L479 AbstractCegarLoop]: Abstraction has 1126 states and 1730 transitions. [2020-10-14 09:22:32,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:32,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1730 transitions. [2020-10-14 09:22:32,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:22:32,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:32,485 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] [2020-10-14 09:22:32,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:22:32,485 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:32,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:32,486 INFO L82 PathProgramCache]: Analyzing trace with hash -368803760, now seen corresponding path program 1 times [2020-10-14 09:22:32,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:32,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978195970] [2020-10-14 09:22:32,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:32,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:32,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:32,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:33,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:35,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:37,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:37,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 09:22:37,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:37,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:22:37,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:37,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 09:22:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 09:22:37,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:37,785 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:37,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:37,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:37,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:37,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:22:37,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:37,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:37,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:37,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978195970] [2020-10-14 09:22:37,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:37,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:37,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668589455] [2020-10-14 09:22:37,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:37,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:37,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:37,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:37,845 INFO L87 Difference]: Start difference. First operand 1126 states and 1730 transitions. Second operand 4 states. [2020-10-14 09:22:38,091 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:22:39,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:39,220 INFO L93 Difference]: Finished difference Result 3012 states and 4691 transitions. [2020-10-14 09:22:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:39,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-14 09:22:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:39,232 INFO L225 Difference]: With dead ends: 3012 [2020-10-14 09:22:39,233 INFO L226 Difference]: Without dead ends: 2074 [2020-10-14 09:22:39,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:39,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2020-10-14 09:22:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2072. [2020-10-14 09:22:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2072 states. [2020-10-14 09:22:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3184 transitions. [2020-10-14 09:22:39,370 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3184 transitions. Word has length 104 [2020-10-14 09:22:39,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:39,371 INFO L479 AbstractCegarLoop]: Abstraction has 2072 states and 3184 transitions. [2020-10-14 09:22:39,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:39,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3184 transitions. [2020-10-14 09:22:39,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:22:39,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:39,376 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] [2020-10-14 09:22:39,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:22:39,376 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:39,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:39,377 INFO L82 PathProgramCache]: Analyzing trace with hash -697065283, now seen corresponding path program 1 times [2020-10-14 09:22:39,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:39,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683687381] [2020-10-14 09:22:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:39,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:39,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:44,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:44,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 09:22:44,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:44,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:22:44,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:44,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:44,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:44,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 09:22:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 09:22:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:22:44,658 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:44,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:44,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:44,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:44,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:44,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:44,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:22:44,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:44,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:44,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683687381] [2020-10-14 09:22:44,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:44,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:44,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172327334] [2020-10-14 09:22:44,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:44,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:44,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:44,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:44,697 INFO L87 Difference]: Start difference. First operand 2072 states and 3184 transitions. Second operand 4 states. [2020-10-14 09:22:44,932 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:22:46,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:46,131 INFO L93 Difference]: Finished difference Result 5352 states and 8307 transitions. [2020-10-14 09:22:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:46,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-14 09:22:46,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:46,151 INFO L225 Difference]: With dead ends: 5352 [2020-10-14 09:22:46,152 INFO L226 Difference]: Without dead ends: 3730 [2020-10-14 09:22:46,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:46,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3730 states. [2020-10-14 09:22:46,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3730 to 3728. [2020-10-14 09:22:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3728 states. [2020-10-14 09:22:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 5733 transitions. [2020-10-14 09:22:46,345 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 5733 transitions. Word has length 104 [2020-10-14 09:22:46,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:46,345 INFO L479 AbstractCegarLoop]: Abstraction has 3728 states and 5733 transitions. [2020-10-14 09:22:46,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 5733 transitions. [2020-10-14 09:22:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:22:46,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:46,357 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] [2020-10-14 09:22:46,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:22:46,358 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:46,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:46,358 INFO L82 PathProgramCache]: Analyzing trace with hash -484949746, now seen corresponding path program 1 times [2020-10-14 09:22:46,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:46,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830725477] [2020-10-14 09:22:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:46,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:46,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:46,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:51,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:51,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 09:22:51,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:51,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:22:51,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:51,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 09:22:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 09:22:51,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:51,634 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:51,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:51,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:51,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:51,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:51,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:51,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:22:51,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:51,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:51,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:51,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:51,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830725477] [2020-10-14 09:22:51,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:51,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:51,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988949820] [2020-10-14 09:22:51,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:51,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:51,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:51,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:51,673 INFO L87 Difference]: Start difference. First operand 3728 states and 5733 transitions. Second operand 4 states. [2020-10-14 09:22:51,891 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:22:53,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:53,029 INFO L93 Difference]: Finished difference Result 9988 states and 15409 transitions. [2020-10-14 09:22:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:53,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-14 09:22:53,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:53,066 INFO L225 Difference]: With dead ends: 9988 [2020-10-14 09:22:53,066 INFO L226 Difference]: Without dead ends: 6874 [2020-10-14 09:22:53,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:53,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6874 states. [2020-10-14 09:22:53,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6874 to 6872. [2020-10-14 09:22:53,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6872 states. [2020-10-14 09:22:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6872 states to 6872 states and 10487 transitions. [2020-10-14 09:22:53,405 INFO L78 Accepts]: Start accepts. Automaton has 6872 states and 10487 transitions. Word has length 104 [2020-10-14 09:22:53,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:53,405 INFO L479 AbstractCegarLoop]: Abstraction has 6872 states and 10487 transitions. [2020-10-14 09:22:53,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand 6872 states and 10487 transitions. [2020-10-14 09:22:53,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:22:53,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:53,411 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] [2020-10-14 09:22:53,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:22:53,412 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:53,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:53,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1280635920, now seen corresponding path program 1 times [2020-10-14 09:22:53,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:53,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296510142] [2020-10-14 09:22:53,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:53,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:53,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:54,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:58,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:58,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 09:22:58,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:22:58,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:58,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 09:22:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:22:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:58,700 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:22:58,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:58,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:58,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:58,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:58,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:58,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:22:58,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:58,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:58,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:58,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:58,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296510142] [2020-10-14 09:22:58,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:58,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:58,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900175187] [2020-10-14 09:22:58,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:58,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:58,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:58,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:58,780 INFO L87 Difference]: Start difference. First operand 6872 states and 10487 transitions. Second operand 4 states. [2020-10-14 09:22:59,139 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:23:00,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:23:00,700 INFO L93 Difference]: Finished difference Result 18852 states and 28773 transitions. [2020-10-14 09:23:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:23:00,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-14 09:23:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:23:00,758 INFO L225 Difference]: With dead ends: 18852 [2020-10-14 09:23:00,758 INFO L226 Difference]: Without dead ends: 12818 [2020-10-14 09:23:00,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:23:00,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12818 states. [2020-10-14 09:23:01,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12818 to 12816. [2020-10-14 09:23:01,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12816 states. [2020-10-14 09:23:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12816 states to 12816 states and 19331 transitions. [2020-10-14 09:23:01,277 INFO L78 Accepts]: Start accepts. Automaton has 12816 states and 19331 transitions. Word has length 104 [2020-10-14 09:23:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:23:01,277 INFO L479 AbstractCegarLoop]: Abstraction has 12816 states and 19331 transitions. [2020-10-14 09:23:01,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:23:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 12816 states and 19331 transitions. [2020-10-14 09:23:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 09:23:01,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:23:01,286 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] [2020-10-14 09:23:01,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:23:01,287 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:23:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:23:01,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1548827854, now seen corresponding path program 1 times [2020-10-14 09:23:01,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:23:01,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291692521] [2020-10-14 09:23:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:23:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:01,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:01,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:01,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:06,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:06,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 09:23:06,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:23:06,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:23:06,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:06,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:23:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 09:23:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 09:23:06,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:06,575 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:23:06,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:23:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:06,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:06,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:06,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:23:06,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:23:06,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:23:06,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:06,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:06,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:23:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:23:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:23:06,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:23:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:23:06,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291692521] [2020-10-14 09:23:06,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:23:06,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:23:06,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248820708] [2020-10-14 09:23:06,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:23:06,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:23:06,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:23:06,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:23:06,623 INFO L87 Difference]: Start difference. First operand 12816 states and 19331 transitions. Second operand 4 states. [2020-10-14 09:23:06,878 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 09:23:08,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:23:08,341 INFO L93 Difference]: Finished difference Result 35598 states and 53625 transitions. [2020-10-14 09:23:08,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:23:08,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-14 09:23:08,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:23:08,401 INFO L225 Difference]: With dead ends: 35598 [2020-10-14 09:23:08,401 INFO L226 Difference]: Without dead ends: 23932 [2020-10-14 09:23:08,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:23:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23932 states. [2020-10-14 09:23:09,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23932 to 23930. [2020-10-14 09:23:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23930 states. [2020-10-14 09:23:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23930 states to 23930 states and 35583 transitions. [2020-10-14 09:23:09,369 INFO L78 Accepts]: Start accepts. Automaton has 23930 states and 35583 transitions. Word has length 104 [2020-10-14 09:23:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:23:09,369 INFO L479 AbstractCegarLoop]: Abstraction has 23930 states and 35583 transitions. [2020-10-14 09:23:09,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:23:09,370 INFO L276 IsEmpty]: Start isEmpty. Operand 23930 states and 35583 transitions. [2020-10-14 09:23:09,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 09:23:09,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:23:09,385 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] [2020-10-14 09:23:09,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:23:09,385 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:23:09,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:23:09,386 INFO L82 PathProgramCache]: Analyzing trace with hash -2098157724, now seen corresponding path program 1 times [2020-10-14 09:23:09,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:23:09,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678113939] [2020-10-14 09:23:09,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:23:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:09,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:09,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:09,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:10,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:12,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:12,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 09:23:12,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:23:12,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3559 [2020-10-14 09:23:12,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:12,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:23:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:23:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 09:23:12,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:13,197 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:23:13,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:23:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:13,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:13,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:23:13,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:23:13,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:23:13,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:13,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:23:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:23:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:23:13,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:23:13,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678113939] [2020-10-14 09:23:13,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:23:13,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:23:13,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129082739] [2020-10-14 09:23:13,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:23:13,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:23:13,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:23:13,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:23:13,235 INFO L87 Difference]: Start difference. First operand 23930 states and 35583 transitions. Second operand 6 states. [2020-10-14 09:23:13,461 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 09:23:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:23:20,746 INFO L93 Difference]: Finished difference Result 179879 states and 268588 transitions. [2020-10-14 09:23:20,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:23:20,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-14 09:23:20,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:23:21,013 INFO L225 Difference]: With dead ends: 179879 [2020-10-14 09:23:21,014 INFO L226 Difference]: Without dead ends: 157306 [2020-10-14 09:23:21,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:23:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157306 states. [2020-10-14 09:23:26,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157306 to 89608. [2020-10-14 09:23:26,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89608 states. [2020-10-14 09:23:26,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89608 states to 89608 states and 133241 transitions. [2020-10-14 09:23:26,172 INFO L78 Accepts]: Start accepts. Automaton has 89608 states and 133241 transitions. Word has length 105 [2020-10-14 09:23:26,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:23:26,172 INFO L479 AbstractCegarLoop]: Abstraction has 89608 states and 133241 transitions. [2020-10-14 09:23:26,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:23:26,172 INFO L276 IsEmpty]: Start isEmpty. Operand 89608 states and 133241 transitions. [2020-10-14 09:23:26,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 09:23:26,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:23:26,206 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] [2020-10-14 09:23:26,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:23:26,207 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:23:26,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:23:26,207 INFO L82 PathProgramCache]: Analyzing trace with hash 691703925, now seen corresponding path program 1 times [2020-10-14 09:23:26,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:23:26,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793016142] [2020-10-14 09:23:26,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:23:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:26,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:26,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:26,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:27,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:29,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:29,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 09:23:29,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:23:29,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3271 [2020-10-14 09:23:29,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:29,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:23:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:23:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 09:23:29,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:29,722 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:23:29,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:23:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:29,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:29,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:23:29,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:23:29,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:23:29,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:29,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:23:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:23:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:23:29,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:23:29,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793016142] [2020-10-14 09:23:29,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:23:29,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:23:29,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334062360] [2020-10-14 09:23:29,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:23:29,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:23:29,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:23:29,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:23:29,749 INFO L87 Difference]: Start difference. First operand 89608 states and 133241 transitions. Second operand 6 states. [2020-10-14 09:23:29,961 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-14 09:23:56,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:23:56,534 INFO L93 Difference]: Finished difference Result 750207 states and 1116280 transitions. [2020-10-14 09:23:56,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:23:56,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-14 09:23:56,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:24:01,975 INFO L225 Difference]: With dead ends: 750207 [2020-10-14 09:24:01,976 INFO L226 Difference]: Without dead ends: 664134 [2020-10-14 09:24:02,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:24:02,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664134 states. [2020-10-14 09:24:19,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664134 to 340704. [2020-10-14 09:24:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340704 states. [2020-10-14 09:24:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340704 states to 340704 states and 505499 transitions. [2020-10-14 09:24:20,531 INFO L78 Accepts]: Start accepts. Automaton has 340704 states and 505499 transitions. Word has length 105 [2020-10-14 09:24:20,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:24:20,531 INFO L479 AbstractCegarLoop]: Abstraction has 340704 states and 505499 transitions. [2020-10-14 09:24:20,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:24:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 340704 states and 505499 transitions. [2020-10-14 09:24:20,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 09:24:20,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:24:20,600 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] [2020-10-14 09:24:20,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:24:20,600 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:24:20,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:24:20,601 INFO L82 PathProgramCache]: Analyzing trace with hash -895827245, now seen corresponding path program 1 times [2020-10-14 09:24:20,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:24:20,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540881068] [2020-10-14 09:24:20,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:24:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:24:20,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:20,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:20,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:20,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:20,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:26,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:24:26,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 09:24:26,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:24:26,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5440 [2020-10-14 09:24:26,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:24:26,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:24:26,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:24:26,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:24:26,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 09:24:26,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:24:26,296 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-14 09:24:26,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:24:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:24:26,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:26,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:24:26,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:24:26,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:24:26,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:24:26,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:24:26,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:24:26,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:24:26,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:24:26,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:24:26,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:24:26,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:24:26,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540881068] [2020-10-14 09:24:26,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:24:26,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:24:26,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792955211] [2020-10-14 09:24:26,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:24:26,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:24:26,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:24:26,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:24:26,332 INFO L87 Difference]: Start difference. First operand 340704 states and 505499 transitions. Second operand 6 states. [2020-10-14 09:24:26,554 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 176